Dayton 3Wy46 Users Manual 106814 01

3WY47 to the manual 1f4a0ee0-6da4-4a30-a845-6591a22032cb

2015-02-04

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3WY47, 3W735B, 3W736C, 3WY44,
3TE27A, 3WY45, and 3WY46

Operating Instructions & Parts Manual

Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the product described.
Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or
property damage! Retain instructions for future reference.

Dayton ProfessionalDuty Electric Generators
®

Description

Unpacking

Dayton professional-duty generators are rugged and compact to provide dependable,
trouble-free service. The alternators are brushless with revolving fields. Honda gasoline
engines provide long life under heavy use. Overhead valves (OHV) provide high performance with lower fuel consumption. These engines are governed to maintain engine
speed of 3600 RPM under load. 3600 RPM engine speed provides 120/240V, 60 Hz
power. Additional features include circuit breaker protection, spark-arresting muffler
(except Model 3WY47), large fuel tank, and oil alert system. Models 3WY45, 3WY46,
and 3WY47 include electric starter.

1. Remove generator from carton.
2. Remove any protective packaging
applied to generator for shipment.
3. Check for loose or missing parts. Check
for shipping damage. If any parts are
missing or damaged, promptly inform
dealer where you bought generator.
4. Battery cables are supplied for Models
3WY45, 3WY46, and 3WY47 only.
These cables are in a separate bag inside
generator carton. You must install these
cables to engine. See “Battery,” page 8
for installation instructions.
Model 3WY47 only: handles and top
cover packaged separately inside
generator carton. You must install these
parts.

Figure 1 – Model 3W735B

Figure 2 – Models 3W736C, 3WY44, 3WY46, 3TE27A, and 3WY45

Form 5S4175

Figure 3 – Model 3WY47
®

Printed in U.S.A.
03430
0803 / 253 / VCPVP
Version B - For Reduction

G016.J

Dayton Operating Instructions and Parts Manual

3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Professional-Duty
Electric Generators
®

Specifications
ELECTRICAL SPECIFICATIONS
Model

Rated
Wattage*

Rated Amperage
120V

Rated Amperage
240V

3W735B
2,200
18.3
—
3W736C
4,000
33.3
16.7
3WY44
5,000
41.7
20.8
3WY46
5,000
41.7
20.8
3TE27A
6,000
50
25
3WY45
7,000
60
30
3WY47
10,000
83.3
41.7
* Single-phase, 1.0 power factor
NOTE: Ratings apply to SAE standard conditions. Reduce ratings 3 1/2% for each 1000 feet above sea level and 1% for each 10°F rise
above 60°F.
GENERAL SPECIFICATIONS
Model

Honda
Engine H.P.

Honda
Model

Fuel
Type

3W735B
5.5
GX160K1VX
3W736C
8
GX240K1VA
3WY44
9
GX270VA
3WY46
9
GX270VDE
3TE27A
11
GX340K1VA
3WY45
13
GX390K1VXE
3WY47
20
GX620VXA3
RECEPTACLE SPECIFICATIONS
Model

120V
Duplex

120V, 30-Amp
Twist-Lock

3W735B
Yes
No
3W736C
Yes
Yes
3WY44
Yes
Yes
3WY46
Yes
Yes
3TE27A
Yes
Yes
3WY45
Yes
Yes
3WY47
Yes
Yes
ELECTRICAL COMPONENT SPECIFICATIONS

Model

Stator
Main
Winding *

Fuel Tank
Capacity

Gasoline
Gasoline
Gasoline
Gasoline
Gasoline
Gasoline
Gasoline

3.9 qt.
5 gal.
8 gal.
8 gal.
8 gal.
8 gal.
13 gal.

Oil Alert
System

Electric
Start

Weight
(pounds)

Yes
Yes
Yes
Yes
Yes
Yes
Yes

No
No
No
Yes
No
Yes
Yes

85
139
173
175
191
247
347

120/240V, 20-Amp
Twist-Lock

120/240V, 30-Amp
Twist-Lock

120/240V, 50-Amp
Receptacle

120V Full
Power Switch

No
Yes
Yes
Yes
Yes
No
No

No
No
No
No
No
Yes
Yes

No
No
No
No
No
No
Yes

No
Yes
Yes
Yes
Yes
No
No

Resistance in Ohms
Stator
Rotor
Auxiliary
Primary
Winding ∆
Winding †

Rotor
Secondary
Winding †

3W735B
1.95
5.2
6.79
1.31
3W736C
0.71
2.17
0.54
2.07
3WY44
0.54
1.38
0.61
2.29
3WY46
0.54
1.38
0.61
2.29
3TE27A
0.37
1.01
0.68
2.57
3WY45
0.28
0.78
0.77
2.9
3WY47
0.40
0.90
0.37
0.50
(*) Connect T2 (Green) and T3 (Black). Measure resistance between T1 (Red) and T4 (Yellow).
(∆) Resistance between brown and white leads.
(†) Remove diodes to check resistance.

2

Capacitor,
MFD
450 Volt

Diodes (2)
800 Volt

16
40
50
50
60
70
80

6 Amp
70
70
70
70
70
70

Dayton Operating Instructions and Parts Manual

Models 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A,
3WY45, and 3WY46

Product Identification
Gas Cap/Fuel Gauge

F
U
E
L

Control Panel

F

GFCI Receptacle
Full Power
Selector
Switch
Roll Cage
12

0 VO

LT

S

RE

SE
TE T
ST

FU
LL

PO
WE
R

12
ON 0
LY

12
0
24
0V

120 Volt
Receptacles

00
HO

EN
M
00
00

UR

S

12
0/2
40

05
1/1
0

VO
LT
S
RE
SE
T

Gas Tank

RE
SE
T

Hour Meter

120/240 Volt
Receptacle

F
U
E
L

F

Circuit
Breaker

Choke Lever

Fuel Valve Lever
Starter Grip

Ground
Lug
Engine

Alternator
Oil Dipstick

Figure 4 – Portable Generator (Model 3W736C Shown)

Engine ON/OFF
Switch (not
shown)
®

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Dayton Operating Instructions and Parts Manual

3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Professional-Duty
Electric Generators
®

General Safety Information
IMPORTANT: Read these instructions and
engine owner’s manual carefully. Become
familiar with generator before trying to
operate or service it. Know its uses, limitations, and any hazards involved. Improper
use of generator can cause severe injury or
death from explosion, fire, burns, electrical
shock, or carbon monoxide poisoning.
Make certain you read and understand all
warnings. Keep these instructions for
reference. They are your guide to safe and
proper operation of this generator.
Safety information appears throughout
these instructions. Pay close attention to
them. Below are definitions for the safety
information listed throughout this manual.
IMPORTANT: Every possible circumstance
that might involve a hazard cannot be
anticipated. The warnings in this manual
and on tags or decals affixed to the unit
are therefore not all-inclusive. If a procedure, work method, or operating technique not specifically recommended by
Dayton is used, you must make sure it is
safe for you and others. You should also
ensure that equipment will not be
damaged or made unsafe by the operating
or maintenance method you choose.
NOTE: Under this heading statements will
be found emphasizing installation, operation
and maintenance procedures that either
simplify procedures or increase efficiency.
Under this heading,
installation, operating, and maintenance procedures or
practices will be found that, if not carefully
followed, WILL result in IMMEDIATE
serious personal injury or death.
Under this heading,
installation, operating, and maintenance procedures or
practices will be found that, if not carefully
followed, COULD result in severe personal
injury or death.

Under this heading,
installation, operating, and maintenance procedures or
practices will be found that, if not carefully
followed, MAY result in minor personal
injury, product or property damage.
Engine exhaust
contains poisonous
carbon monoxide gas. Overexposure
will cause loss of consciousness and
will lead to death. Use only in wellvented areas. Make sure area has
plenty of free-moving, fresh, outside
air. Never run generator in an enclosed
or confined area. Never run generator
inside occupied building.
Early signs of carbon monoxide
poisoning resemble the flu, with
headaches, dizziness, or nausea. If you
have these signs, get fresh air at once!
Some people are more affected by
carbon monoxide than others. These
include pregnant women, persons with
heart or lung disease or anemia, those
under the influence of alcohol, and
those at high altitudes.
Gasoline presents
a hazard of fire or
explosion. Gasoline is flammable. Its
vapor is explosive.
• Keep fuel out of children’s reach.
• Refuel generator in a well-vented
area. Do not fill fuel tank in the dark.
Do not refuel while engine is
running. Unhook all electrical loads
and shut off engine before refueling.
• Do not overfill fuel tank. Always
allow room for fuel to expand. If you
overfill tank, fuel can overflow onto
hot generator or engine surface. This
can cause fire or explosion. After
refueling, tightly close fuel tank cap.
• Do not spill fuel. Fuel or fuel vapor
may ignite. If fuel spills, make sure
area is dry before starting engine.
• Never smoke in refueling area. Never
allow open flames or sparks in area.

4

• Store fuel in approved container.
Store fuel in a well-vented area free
of open flames or sparks.
Guard against fire
hazard. Keep
operation area well-vented. Keep
generator at least three feet away
from any object. Do not place flammable objects near generator.
• Do not use generator where flammable vapors are present. Some
vapors are heavier than air. These
vapors settle in low-lying places.
• Do not use generator in enclosed
spaces. This includes motor home or
RV generator compartments.
Guard against
electric shock.
Generator produces high voltage. This
high voltage can cause severe electric
shock. Only responsible adults should
use the generator.
• Properly ground generator before
starting.
• Never let anyone operate or service
generator without proper instructions.
• Avoid contact with live terminals or
bare wires.
• Do not use generator outdoors in
rain or snow.
• Do not use generator near standing
water or snow.
• Do not use if generator is wet or damp.
• Do not use generator in highly
conductive areas. These areas include
metal decking and steelwork.
• Only use grounded extension cords.
• Do not use any worn or damaged
electric cords. Electric shock or
damage to generator may result.
• On construction sites, you must use a
Ground Fault Circuit Interrupter
(GFCI). This helps guard against
electric shock. OSHA and the National Electrical Code requires this in
the United States.
• Do not wear damp clothing or wet
shoes when using generator.

Dayton Operating Instructions and Parts Manual

Models 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A,
3WY45, and 3WY46

General Safety Information
(Continued)
Engine exhaust
from this product
contains chemicals known, in certain
quantities, to cause cancer, birth
defects, or other reproductive harm.
Guard against
burns. Hot engine
parts can cause severe injury. Use
caution and remain alert when using
generator.
• Keep children and animals away
from generator while it is running or
hot.
• Keep all covers and shields in place.
Keep them tightly secured.
• The muffler becomes very hot during
operation. The muffler remains hot
for a while after shutdown. Do not
touch muffler while it is hot. Do not
let muffler touch anything flammable. Let engine cool before
transporting or storing.
Have standby
installation to
home or building performed by a
licensed electrician. Do not let anyone
else wire into a utility circuit. Personal
injury, equipment damage, or damage
to home could occur.
Never connect
generator to any
existing electrical circuits. The generator output will back-feed into the
utility power line. This may electrocute
a power company line repair person.
Also, if generator is powering electrical circuits, the chance of an electrical
fire exists.

Battery contains
sulfuric acid.
Battery acid is poisonous if swallowed.
Contact with skin or eyes may cause
severe burns. Do not tilt generator
with battery installed. Tilting could
cause battery acid to spill. Wear
protective clothing and face shield
when servicing. Keep out of children’s
reach.
Only a qualified
electrical service
person should service and repair
generator.
• Generator produces high voltage.
Use extreme caution when working
on electrical parts.
• Always remove spark plug wire from
spark plug before servicing. This will
prevent accidental starting.
• When working on generator, avoid
hot muffler, exhaust manifold, and
engine parts. Severe burns may
occur.
• Do not work on generator when
tired.
• Use only factory approved repair
parts.
Store generator in
a well-vented area.
Make sure fuel tank is empty. Never
store with fuel in tank. Vapors may
reach an open flame or spark. Fire or
explosion may result.
Never operate
generator
• if engine speed changes greatly
• if engine misfires often
• if powered items overheat

Battery gives off
explosive gases.
Keep sparks, flames, and cigarettes
away. Do not remove or install battery
cables when engine is cranking or
running. Only service or use battery in
a well-vented area.

• if electrical output drops
• if it is sparking
• if it produces smoke or flames
• if it vibrates at high levels
• if it has a damaged receptacle

Keep generator
and nearby areas
clean.
• Keep generator free of oil, mud, and
other foreign matter.
• Remove anything that creates
slippery areas around generator.
• Remove oily rags and other items
that create fire hazards.
• Keep a fire extinguisher nearby.
Make sure it is rated ABC by the
NFPA. They are good for all uses.
Consult your local fire department.
• Keep fire extinguisher well maintained. Be familiar with its use.
Know how to stop
engine quickly.
Know how to use all controls.
Prolonged exposure to loud noise
can cause hearing loss.
• When working around generator,
wear approved hearing protection.
• Remember neighbors when using
generator.

Generator Features
OIL ALERT SYSTEM
The oil alert system protects the engine
from low oil damage. This system automatically shuts down the engine and
prevents engine restarting if the oil level
falls too low.
NOTE: When this happens, the engine
switch remains in the ON position. The oil
alert system is wired into the ON/OFF
switch.
If this system shuts down the engine, the
engine will not start until you add oil. Add
oil to engine (see "Engine Oil", page 10).
NOTE: Operate generator on a level
surface. If not level, the oil may flow away
®

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Dayton Operating Instructions and Parts Manual

3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Professional-Duty
Electric Generators
®

Generator Features
(Continued)
from the oil level sensing device. This will
cause the oil alert system to shut down
engine.
See engine owner’s manual for more
information.

IMPORTANT: Do not move the full power
selector switch while powering electrical
items. Unplug all items before moving
switch. Failure to do so can damage
switch.

Powering items at reduced engine speed
will damage generator and powered
items.

Models 3W735B, 3WY45, and 3WY47 do
not have this switch. These models provide
full power to all receptacles.

Models 3WY46, 3WY45, and 3WY47 have
an electric starter. A battery is not supplied
with generator. You must provide a 12volt, 32-amp-hour battery. For more
battery information, see “Battery,” page 8.

FULL POWER SELECTOR SWITCH
All models except 3W735B, 3WY47, and
3WY45 have a full power selector switch
on the control panel. The switch has two
positions: 120 VOLT ONLY, and 120/240
VOLT.
120 VOLT ONLY: This position sends full
power to the 120V receptacles only. 240V
power is not available. Use this position
when powering 120V items only.

HOUR METER
All models except 3W735B have an hour
meter. The hour meter is on the control
panel. The hour meter shows the total
generator run time, including all idle time
(See Figure 7). Hour meter is accurate up
to 1/10 of an hour.

Figure 7 – Hour Meter

AUTO-IDLE SYSTEM

Figure 5 – Full Power Selector Switch in 120
Volt Only Position

120/240 VOLT: This position sends full
power to the 120/240V receptacle. It also
powers the 120V receptacles at reduced
wattage capacity.

Figure 6 – Full Power Selector Switch in
120/240 Volt Position

The auto-idle system allows the engine to
idle down or run at a slower speed when
the generator is not being used to supply
power. The auto-idle system can be turned
ON or OFF by a rocker switch on the
control panel. When the switch is in the
OFF position, the engine runs at full speed
all of the time. When the switch is in the
ON position, the engine slows down to
idle speed until an electrical load is
applied. When a load is applied to the
generator (an electrical item is plugged in
and turned on) the engine speeds up to
the preset speed required to produce the
correct voltage.
IMPORTANT: A minimum current load of
1 Amp is required to disengage the auto
idle solenoid and cause the engine to
come up to speed for correct voltage.

6

ELECTRIC START (MODELS 3WY46,
3WY45, AND 3WY47 ONLY)

GROUND FAULT CIRCUIT INTERRUPTER RECEPTACLE
All models have a 120-volt ground fault
circuit interrupter (GFCI) receptacle. The
GFCI receptacle is on the control panel or
top cover of alternator (Model 3W735B
only). The GFCI protects you against
hazardous electrical shock caused when
your body becomes a path through which
electricity travels to reach ground. This
could happen when you touch an appliance or cord that is ‘live’ through faulty
mechanism, damp or worn insulation, etc.
When protected by the GFCI, you may still
feel a shock, but the GFCI should cut it off
quickly. A person in normal health should
not receive serious injury.
NOTE: Infants and very small children may
still be affected.
TEST PROCEDURE
Check the GFCI receptacle every month.
This insures it is working right.
1. Push black TEST button. Red RESET
button should pop out. This should trip
GFCI, resulting in no electrical power at
receptacle. Verify this by plugging test
lamp with good bulb into receptacle. If
lamp does not work, GFCI receptacle is
good.

Dayton Operating Instructions and Parts Manual

Models 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A,
3WY45, and 3WY46

Generator Features
(Continued)

RECEPTACLE CIRCUIT BREAKER

IMPORTANT: You must press the RESET
button firmly and fully. It should lock into
place. If the GFCI does not lock into place,
do not use receptacle. Contact a qualified
electrician for repairs.

EL
FU

2. If the GFCI receptacle tests okay, restore
power by pushing the RESET button
back in. The test lamp should work at
this time.

Roll Cage

F

If RESET button
does not pop out,
do not use the GFCI receptacle. Contact
a qualified electrician for repairs.

Model 3W735B has only one receptacle
circuit breaker. All other models have four,
except Model 3WY47 which has six. The
circuit breakers protect the receptacles and
alternator. Overloading generator will trip
circuit breaker. A short circuit in item
being powered will also trip breaker. If this
occurs, unplug electrical load from
receptacle. Let circuit breaker cool down.
Push circuit breaker button to reset.
Washers

20

20
Handle

Normal

Tripped

Lock Nuts

Bolts

Figure 10 – Receptacle Circuit Breaker Button

Figure 8 - GFCI Receptacle

ENGINE CIRCUIT BREAKER (MODELS
3WY46 AND 3WY45 ONLY)
This circuit breaker protects the battery
charging circuit. A short circuit will trip the
circuit breaker. The circuit breaker will also
trip if you install battery wrong. Push
circuit breaker button to reset. Model
3WY47: Fuse located inside keyswitch box.

ON
OFF

START

ENGINE SW
CIRCUIT
BREAKER

Engine Circuit
Breaker Button

ON/push OFF

2. Place top cover on top of generator roll
cage with notch on control panel side.
Use four #8 sems screws provided to
attach cover to roll cage (See Figure 12).
SEMS Screws

Top Cover

Assembly
HANDLE AND TOP COVER ASSEMBLY
(MODEL 3WY47 ONLY)
1. Remove the two bolts, lock nuts, and
washers holding side panels to control
panel end of roll cage. Insert bolts with
washers through two holes in the
handle and then back through roll cage
and side screen panels (See Figure 11 ).
Tighten the lock nuts against the side
screen panels.

FU
EL

SE
TE T
ST

Figure 11 – Attaching Handles to Roll Cage

F

RE

Electric motors need higher starting
current. They require up to 3 to 6-times
their rated full-load wattage to start. The
starting current needed may be too high.
This can cause nuisance circuit breaker
tripping. To help prevent this, start electric
motors first. Connect additional items to
generator after starting motors. If this
continues to happen, reduce the total
generator load.
NOTE: High ambient temperatures will
cause nuisance tripping.

SEMS
Screws

Figure 12 – Attaching Top Cover to Roll Cage

Figure 9 – Engine Circuit Breaker
®

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Dayton Operating Instructions and Parts Manual

3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Professional-Duty
Electric Generators
®

Assembly (Continued)
BATTERY (MODELS 3WY46, 3WY45,
AND 3WY47 ONLY)
Battery gives off
explosive gases.
Keep sparks, flames, and cigarettes
away. Do not remove or install battery
cables when engine is cranking or
running. Only service or use battery in
a well-vented area.
Battery contains
sulfuric acid.
Contact with skin or eyes may cause
severe burns. Do not tilt generator
with battery installed. Tilting could
cause battery acid to spill. Wear
protective clothing and face shield
when servicing. Keep out of children’s
reach.
• If battery acid gets on your skin,
wash with water.
• If battery acid gets in your eyes,
flush with water at least 15 minutes.
Call a doctor at once.
Battery acid is poisonous.
• If swallowed, drink large amounts of
water or milk. Follow with milk
of magnesia or vegetable oil. Call a
doctor at once.

Models 3WY46, 3WY45, and 3WY47 have
an electric starter. A battery is not supplied
with generator. You must provide a 12volt, 32-amp-hour battery. The positive
and negative battery cables are supplied
with generator. You must install these
cables before mounting battery.
Always wear safety glasses when working
with battery. Make sure battery terminals
are clean. Make sure cable connections are
tight.
Always shut down engine before removing
or attaching battery cables. Always remove
the negative (–) cable first. Always attach
negative (–) cable last.
INSTALLING BATTERY CABLES TO
ENGINE
1. Attach the red, positive (+) battery cable to
the starter solenoid on engine (See Figure
13). The starter solenoid is located directly
above the starter on Model 3WY47. This
cable is factory installed.

Black, Negative
(–) Battery
Cable

If you remove
battery, insulate
the red, positive (+) battery cable
terminal. Insulate with electrical tape.
Exposed terminal may spark when
generator runs.

IMPORTANT: Make sure battery connections are the correct polarity. Electric start
generators use negative ground, 12-volt
DC starting system.

2. Attach the black, negative (–) battery
cable to the engine block. Use the bolt,
nut, and two washers provided with the
battery cables. Use long mounting hole
on opposite side of engine from starter
solenoid. Attach cable as shown in
Figure 14.

Figure 14 – Connecting Black, Negative (–)
Battery Cable to Engine Block

Starter
Solenoid
Red, Positive (+)
Battery Cable
Figure 13 – Connecting Red, Positive (+)
Battery Cable to Starter Solenoid on Engine
(Model 3WY45 Shown)

8

Dayton Operating Instructions and Parts Manual

Models 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A,
3WY45, and 3WY46

Assembly (Continued)
Nut

MOUNTING BATTERY TO GENERATOR

Battery Mounting
Bracket

Do not over tighten
positive terminal on
starter solenoid. Positive terminal
could rotate and cut into negative
terminal, causing a short.

To Engine
Block
To Starter
Solenoid
F
U
E
L

NOTE: Model 3WY47 battery is located on
opposite side as shown (See Figure 16).

F

F

F
U
E
L

Battery

1. Secure battery to generator by battery
hold-down system. This system consists
of the battery mounting bracket, hook
bolt, and nut (See Figures 15 and 16).
Hook Bolt

Nut
Battery Mounting
Bracket

Figure 16 – Battery Hold-Down System
(Model 3WY47 Shown)

2. Locate the red, positive (+) battery cable
from starter solenoid. Connect it to the
positive (+) battery terminal (See Figures
17 and 18).
0

10
0

Figure 18 – Connecting Positive and
Negative Cables to Battery (Model 3WY47
Shown)

3. Locate the black, negative (–) battery
cable attached to engine block. Connect
it to the negative (–) battery terminal
(See Figure 16).

20
0
30

0

10

To
Engine
Block
0

20

4. Check battery before starting engine.
Make sure fluid levels are full. Make
sure battery is charged.
See engine owner’s manual for more
information.

0
30

Battery

To Starter
Solenoid

Hook Bolt
Figure 15 – Battery Hold-Down System
(Model 3WY45 Shown)
Figure 17 – Connecting Positive and
Negative Cables to Battery (Model 3WY45
Shown)

®

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Dayton Operating Instructions and Parts Manual

3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Professional-Duty
Electric Generators
®

Installation
FUEL
Gasoline presents a
hazard of fire or
explosion. Gasoline
is flammable. Its vapor is explosive.
• Keep fuel out of children’s reach.
• Refuel generator in a well-vented
area. Do not fill fuel tank in the dark.
Do not refuel while engine is
running. Unhook all electrical loads
and shut off engine before refueling.

1. Remove dipstick (See Figure 19). Wipe
dipstick clean.

generator. Keep generator at least three
feet away from any object.

2. Insert dipstick into oil filler neck. Do not
screw it in. Oil level should be at top of
filler neck. Oil should cover most of
dipstick. For Model 3WY47 only, oil level
should be between two dots on dipstick.

GENERATOR GROUNDING

3. If level is low, fill to top of oil filler neck
(See Figure 19). Only use oil recommended
in engine owner’s manual. For Model
3WY47 only, fill to top dot on dipstick.

• Do not overfill fuel tank. Always
allow room for fuel to expand. If you
overfill tank, fuel can overflow onto
hot engine. This can cause fire or
explosion. After refueling, tightly
close fuel tank cap.

Oil Level
At Top
Of Filler
Neck

• Do not spill fuel. Fuel or fuel vapor
may ignite. If fuel spills, make sure
area is dry before starting engine.
• Never smoke in refueling area. Never
allow open flames or sparks in area.
• Store fuel in approved container.
Store fuel in a well-vented area free
of open flames or sparks.

Use clean, fresh, unleaded gasoline. Use
gasoline with octane rating of 86 or
higher. Service station gasoline pumps
should display the octane rating. Using
gasoline with lower octane level could
damage engine. Avoid getting dirt, dust,
or water in fuel tank. Do not mix oil with
gasoline. See engine owner’s manual for
more information.
ENGINE OIL
We ship the generator without oil in the
engine crankcase. You must add oil before
starting engine. See engine owner’s
manual for specific oil type.
CHECKING OIL LEVEL AND ADDING OIL
Follow steps below to check oil level.
Make sure engine is level and stopped.

Dipstick
Oil
Figure 19 – Checking Oil Level (Model
3W735B Shown)

NOTE: If oil level is too low, oil alert
system will shutdown engine and prevent
engine from restarting.
VENTILATION

You must properly
earth-ground
generator before starting. This will
help guard against deadly electric
shock. Only use grounded plugs with
generator. Only use grounded extension cords. Only use three-wire or
double-insulated power tools.

Grounding generator helps prevent electric
shock from a ground fault condition.
Locate ground lug on end of generator
housing (See Figure 20). Attach a #10
stranded-copper ground wire to ground
lug. Drive grounding point into ground.
Grounding point can be a stake, grounding rod, or pipe. Grounding point should
be copper or brass. Attach ground wire to
grounding point. You must supply the
ground wire and grounding point. These
do not come with generator. Follow the
National Electrical Code and all state and
local codes. Consult your power company
or a licensed electrician.
For a grounding
point, do not use
metal pipe being used to carry combustible materials or gases.

Ground
Lug

Use only in wellvented areas. Make
sure area has plenty of free-moving,
fresh, outside air. Never run generator
in an enclosed or confined area. Never
run generator inside occupied building.
Engine exhaust contains poisonous
carbon monoxide gas. Overexposure
will cause loss of consciousness and
will lead to death.

This generator needs cooling air to run
properly. Never block free-flowing, cooling
air to generator. Overheating will occur
without cooling air. This will damage the

10

Copper or
Brass
Grounding
Point

Alternator

Ground Wire

Figure 20 – Grounding Generator
(Model 3WY45 Shown)

Dayton Operating Instructions and Parts Manual

Models 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A,
3WY45, and 3WY46

Installation (Continued)
DUST, DIRT, RAIN, AND SNOW
Do not use
generator outdoors in rain or snow. Do not use
generator near standing water or
snow. Do not use if generator is wet or
damp. Operating generator in these
conditions increases the risk of electrocution. Severe injury or death can
occur.

Do not use generator in extremely dusty or
dirty conditions. This will severely affect its
life. Keep generator clean. Do not allow
dust, dirt, rain, or snow to collect on it.
Protect generator from outdoor elements.
EXTENSION CORDS
Only use grounded extension cords. Be
sure to use extension cord with proper
wire gauge size. See chart below.
RECOMMENDED MINIMUM WIRE
GAUGES (AWG) FOR EXTENSION
CORDS
Ampere
Load

AWG for
50' Cord

AWG for AWG for
100' Cord 150' Cord

2

18

18

18

3

18

18

18

4

16

16

16

5

16

16

16

6

16

16

14

8

16

14

12

10

16

14

12

12

14

14

12

14

14

12

10

16

12

12

10

20

10

10

8

GROUND FAULT PROTECTION
Ground Fault Circuit Interrupter (GFCI)
helps guard against electric shock. On

construction sites, you must use a GFCI.
United States OSHA and the National
Electric Code requires this.
You may need to provide the GFCI device.
Purchase GFCI at any electrical supply
house. Check the Yellow Pages for the
nearest supply house.
STANDBY INSTALLATION TO HOME
OR BUILDING
Have standby
installation
performed by a skilled, licensed
electrician. Do not let anyone else wire
into a utility circuit. Personal injury,
equipment damage, or damage to
home could occur.

IMPORTANT: This generator will not
power your entire home. Most home
utility electric service is more than 60
amps. This will exceed generator output.
Only power needed items during a power
outage. Make sure total wattage of
electrical load does not exceed rated
wattage of generator.
You can use this generator as a standby
power source. During a power outage, the
generator will power selected items in a
building. Have generator and additional
wiring installed by a skilled, licensed
electrician. This is not a do-it-yourself job.
Follow all local codes.
The electrician must
install a doublethrow transfer switch. This isolates
existing electrical circuits from the
utility power line. If not isolated,
generator output will back-feed into
utility power line. This may electrocute
a power company line repair person.

DETERMINING ELECTRICAL LOAD
FOR GENERATOR
You must decide what electrical load your
generator can power. Do this before using

generator. Use the following four-step
method. It will help you select a load that
is not too large. Make sure total wattage
of all electrical loads does not exceed
rated wattage of generator. For rated
wattage of your generator, see “Electrical
Specifications,” page 2. Electric motors
present a special problem when figuring
load. Read Step 3 carefully.
1. Make two lists of items you want
powered by generator. List all motors
and motor powered appliances in one.
List all lights, small appliances, etc. in
the other. For standby service to home
or building, only include items you must
power.
2. Enter running watts of each item except
motors. The light bulb or appliance
nameplate lists its wattage. Remember,
1KW = 1000 watts.
NOTE: The nameplate may not list
wattage. It may only list volts and amps.
The formula for finding wattage is: Volts x
Amps = Watts. For example: An appliance
nameplate states 3 amps at 120 volts. 3
amps x 120 volts = 360 watts.
3. Electric motors present a special
problem. They require 3 to 6 times their
rated full load wattage to start. Chart 1,
on page 12, shows starting watts
(maximum volt-amperes [VA]) for
different size motors. For example: an
electric motor nameplate states 5 amps
at 120 volts. 5 amps x 120 volts = 600
watts running. Multiply this figure by 3.
This will show the starting watts
(maximum VA) needed. 600 watts x 3 =
1800 watts (VA) to start. When figuring
the generator load for motors, you must
use the starting watts (maximum VA)
figure. Do not use the running watts
figure.

®

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Dayton Operating Instructions and Parts Manual

3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Professional-Duty
Electric Generators
®

Installation (Continued)
NOTE: Some motors require nearly the
same wattage to run as to start. These
items include saws, drills, hair dryers, and
food mixers. See Chart 2 for typical
appliance wattage examples.
4. Add watts and starting watts (maximum
VA) of all items. This total must not be
larger than the rated wattage of your
generator. It is a good idea to have up
to 25% extra capacity for future needs
or extra equipment.

TYPICAL ELECTRIC APPLIANCE WATTAGES
Chart to be used as reference. Data may vary with size, make, and/or model.
CHART 2
Equipment

Running
Watts

Light bulb (100W)
Radio
Fan
Television
Furnace fan—1/3 HP with blower
Vacuum cleaner
Sump pump—1/3 HP
Refrigerator/freezer
6" Circular saw
Floodlight
1/2" Drill
Toaster/coffeemaker
Skillet
14" Chain saw
Water well pump—1/2 HP
Hot plate/range (per burner)
10" Table saw
Water heater (storage-type)

100
150
200
400
600
600
700
800
800
1000
1000
1200
1200
1200
1000
1500
2000
5000

Starting
Watts
(Max.VA)

100
150
600
400
1800-2400
750
2100-2800
5000
1000
1000
1250
1200
1200
1500
3000-6000
1500
6000
5000

CHART 1
Motor
HP
Rating

Approximate
Running
Watts

Approximate
Starting Watts*
(Max. VA)
Universal Motors
(small appliance)

1/8
1/4
1/3
1/2
3/4
1
11 / 2
2
3

275
400
450
600
850
1000
1600
2000
3000

400
500
600
750
1000
1250
1750
2350
†

Approximate
Starting Watts*
(Max. VA)
Repulsion
Induction Motors

Approximate
Starting Watts*
(Max. VA)
Capacitor
Motors

Approximate
Starting Watts*
(Max. VA)
Split Phase
Motors

600
850
975
1300
1900
2300
3200
3900
5200

850
1050
1350
1800
2600
3000
4200
5100
6800

1200
1700
1950
2600
†
†
†
†
†

(*) Always use starting watts (maximum VA), not running watts, when figuring correct electrical load.
(†) Motors of higher horsepower are not generally used.
Please check with appliance manufacturer for maximum wattage required.

12

Dayton Operating Instructions and Parts Manual

Models 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A,
3WY45, and 3WY46

Operation
HIGH AND LOW TEMPERATURE
OPERATION
Air temperature affects generator output.
Output drops 1% for each 10° temperature rise above 60° F. Very low temperatures may make the engine hard to start.
See engine owner’s manual for more
information.

Use receptacles properly. Improper use
could damage generator. Use only
grounded extension cords. Power only
grounded or double-insulated items. Do
not overload receptacles. Models
3W736C, 3WY44, 3WY46, 3TE27A, and
3WY45 have the following receptacles
(See Figure 21):

12
0V
OLT
S

RE
SE
TE T
ST

Aut

OFF

1/10

RE

NOTE: Do not exceed amperage rating of
receptacles. Exceeding rating will trip
receptacle circuit breaker.

T

SE

T

24

0V

OLT

S

RE

RE

SE

T

SE

T

• 120V, 15-amp duplex receptacle
• 120V, 30-amp twist-lock receptacle

USING RECEPTACLE

SE

120V, 15-Amp GFCI

• 120V, 15-amp duplex GFCI receptacle

NOTE: We supply the engine owner’s
manual with generator. Refer to that
manual for questions concerning engine
operation.

RE

S

This generator is not large enough to
power your entire home. Do not connect
generator to any existing electrical circuits.
Plug items directly into generator receptacles. Do not exceed amperage rating of
receptacles. Only use grounded cords.

Never connect
generator to any
existing electrical circuits. The generator output will back-feed into the
utility power line. This may electrocute
a power company line repair person.
Also, if generator is powering electrical circuits, the chance of an electrical
fire exists.

le

EN
00 M
00
00
HO
05
UR

GENERAL INFORMATION

Use only in wellvented areas. Make
sure area has plenty of free-moving,
fresh, outside air. Never run generator in
an enclosed or confined area. Never run
generator inside occupied building.
Engine exhaust contains poisonous
carbon monoxide gas. Overexposure will
cause loss of consciousness and will lead
to death.

o-Id

ON

120/240V, 50-Amp
Figure 22 – Receptacle Locations
(Model 3WY47 only)

• 120/240V, 20 or 30-amp twist-lock
receptacle

POWER CORD AND PLUG REQUIREMENTS

Model 3W735B has only the 120V duplex
receptacle.

120V, 30-amp twist-lock receptacle
• NEMA L5-30P plug
• Three-wire, 30-amp cord

120V, 15-Amp Duplex

12
0V

OL

120/240V, 20 or 30-amp twist-lock receptacle
• NEMA L14-20P (20-amp) or L14-30P
(30-amp) plug
• Four-wire, 20-amp or 30-amp cord

TS

RE

SE
TE T
ST

Au

to-I

dle

ON

OF

F

EN
M
00

00

00
HO
05
UR
S
1/10

RE

RE

SE

T

SE

T

120V, 30-Amp
Twist-Lock
120/240V, 20 or 30-Amp
Twist-Lock

120V/240V, 50-amp twist-lock receptacle
• NEMA L14-50P plug
• Four-wire, 50-amp cord
120 Volt
30 Amp

Figure 21 – Receptacle Locations (Models
3W736C, 3WY44, 3WY46, 3TE27A, and
3WY45)

Model 3WY47 has the follwing receptacles
(See Figure 22):

W X
G

X
(Hot)

Ground
(Green)

W
(Neutral)

120/240 Volt
20 and 30
Amp

Neutral
120V 120V
L14-20P
Plug

w
Y

X
G

• 120V, 15-amp duplex GFCI receptacle
• 120V, 15-amp duplex receptacle
• 120V, 30-amp twist-lock receptacle

Ground
(Green)

X
(Hot)

Ground
Neutral
120V 120V

Ground L14-50P
Plug
Y

120V
w

• 120/240V, 30-amp twist-lock receptacle
• 120/240V, 50-amp receptacle

L5-30P
Plug

Y

X

G
X
w

120V

Neutral

G

Y
(Hot)

W
(Neutral)

L14-30P
Ground Plug

Figure 23 – Cord and Plug Configurations
®

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G016.J

Dayton Operating Instructions and Parts Manual

3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Professional-Duty
Electric Generators
®

Operation (Continued)
PRESTART
Operate generator on a firm, dry, and
clean surface. The surface must be level.
Protect generator from heavy dust, sand,
dirt, rain, or snow. Do not locate generator near standing water and snow. Make
sure area is well-vented.

NOTE: You may not need to close choke if
engine is warm or air temperature is high.
4. Start the engine.

IMPORTANT: Do not let starter grip snap
back against engine. Return it gently. This
will prevent damage to starter.
NOTE: If engine does not start, check the
oil level in the cranckcase. Add oil as
needed. Be sure engine is on a level
surface. See “Oil Alert System,” page 5.

Choke Lever
(Closed Position)

ENGINE SW
ON

Only responsible
adults should use
generator. Never let anyone operate
generator without proper instructions.

NOTE: If oil level is too low, oil alert
system will keep engine from starting (See
“Oil Alert System,” page 5). Make sure oil
level is full before starting. See “Engine
Oil,” page 10.
Before starting the engine, disconnect all
electric loads from generator.

OFF

Engine
Switch
Fuel Valve Lever
(ON Position)
Figure 24 – Fuel Valve Lever On, Choke
Lever Closed (Models 3W736C, 3WY44,
3WY46, 3TE27A, and 3WY45)

ELECTRIC STARTER (MODELS 3WY46,
3WY45, AND 3WY47 ONLY)
Turn the engine switch to the START
position (See Figure 27). Hold it there until
engine starts. When engine starts, let
switch return to the ON position.

STARTING
IMPORTANT: The engine speed is preset.
The throttle is locked in preset position. Do
not adjust throttle. Preset position lets
engine run at 3600 RPM under load. The
engine must maintain 3600 RPM for
generator to create correct voltage.
Running engine at lower speeds will
damage generator and powered items.

Choke
Button
(Closed
Position)

IMPORTANT: Never start generator with
electrical loads connected. Start engine
before adding electrical loads.
1. Make sure gasoline tank is full. See
“Fuel,” page 10 for fuel information.

Figure 26 – Engine Switch in ON Position
(All Models Except 3WY46, 3WY45, and
3WY47)

IMPORTANT: Do not use electric starter
more than five seconds. Starter motor
damage may occur. If engine fails to start,
release the switch and wait ten seconds.
After ten seconds, try starting again.
NOTE: If engine does not start, check the
oil level in the cranckcase. Add oil as
needed. Be sure engine is on a level
surface. See “Oil Alert System,” page 5.

Figure 25 – Choke Button Closed (Model
3WY47 Only)

2. Move fuel valve lever to the ON position
(See Figure 24).

RECOIL STARTER (NOT AVAILABLE ON
MODEL 3WY47)

3. Move choke lever fully to the left (See
Figure 24) or pull choke button out
(Model 3WY47 only, See Figure 25). This
closes the choke.

Turn engine switch to the ON position (See
Figures 26 and 27). Remove slack from
starter rope by lightly pulling starter grip.
Next, pull starter rope briskly.

14

ON
OFF

START

ENGINE SW

Engine
Switch

CIRCUIT
BREAKER

ON/push OFF

Figure 27 – Engine Switch (Models 3WY46,
3WY45, and 3WY47 Only)

Dayton Operating Instructions and Parts Manual

Models 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A,
3WY45, and 3WY46

Operation (Continued)
5. As engine warms up, slowly move
choke lever fully to the right (See Figure
28). This opens the choke. On Model
3WY47, the choke will automatically
open (See Figure 29).

AUTO-IDLE OPERATION

ADJUSTING THE IDLE SPEED

IMPORTANT: Never start engine with
electrical loads connected. Start engine
before adding electrical loads.

IMPORTANT: Adjust the idle speed only:

1. If engine is cold, turn the auto-idle
switch OFF.
2. Start engine. Allow engine to warm up
with no load for five minutes.

Choke Lever (Open Position)

3. Turn auto-idle switch ON. Engine will
slow to idle speed. Engine idle speed is
preset. Idle speed adjustment should
not be necessary.
4. Operate generator according to
specifications outlined in owner's
manual.
5. Engine will automatically increase to
normal operating speed when you plug
load into any generator outlet.

Figure 28 – Choke Lever Opened

NOTE: The 250 Volt/50 Amp receptacle is
not connected through the auto-idle
circuit. The auto-idle switch must be
turned off to get full power out of this
receptacle (See Figure 30).
6. The auto-idle system should be turned
OFF when generator is shut down.

• If the idle speed becomes too high.
• If the engine idle speed will not
regulate (engine idles and speeds up
again and again).
1. Turn auto-idle switch OFF. Start engine.
Allow engine to warm up with no load
for five minutes.
2. Remove engine linkage cover (Models
3WY46 and 3WY45 only).
3. Push plunger into solenoid body to
manually engage solenoid and set idle
speed.
4. Loosen the M8 nut that holds the
solenoid mounting bracket to the
generator (Models 3WY46 and 3WY45
only, See Figure 31). Do not loosen bolt
that holds the solenoid mounting
bracket to the generator on Model
3WY47, See Figure 32).
Solenoid
Mounting
Bracket
EN
OF

GIN

E

F

M8 Nut
Auto-Idle
Switch

12
0 VO
LT
S

Figure 31 - Solenoid Bracket Location
(Models 3WY46 and 3WY45 Only)

RE
SE
TE T
ST

12
ON 0
LY

Choke
Button
(Open
Position)

12
24 0
0V

00

Solenoid
Mounting
Bracket

EN
M
00

00
HO
05
UR
S
1/1

RE
0

RE

SE

SE

T

T

24

0 VO

LT

S

RE

SE

RE

T

SE

T

Bolt

Figure 29– Choke Lever Opened
(Model 3WY47 Only)
Figure 30 - Auto-Idle Switch Location on
Control Panel

Figure 32 - Solenoid Bracket Location
(Model 3WY47 Only)
®

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Version B - For Reduction

G016.J

Dayton Operating Instructions and Parts Manual

3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Professional-Duty
Electric Generators
®

Operation (Continued)
Always set the idle
speed before
turning on the auto-idle. If idle speed
is not set, the larger resistor on the
control board may become hot. Heat
from the resistor may damage the
protective coating on the control
board.

5. Slowly pull solenoid bracket away
from engine (on Model 3WY47 this
will require bending the bracket
slightly).
6. With a volt meter, check the no-load
output voltage at the 120-volt duplex
receptacle. At proper idle speed (2680
minimum RPM) the meter should read
50-60 volts. Lower settings will cause
the auto-idle to not operate properly.
7. After reaching proper idle speed,
tighten M8 nut to secure solenoid
mounting bracket (Models 3WY46
and 3WY45 only).
8. Turn auto-idle switch ON. Make sure
solenoid is engaged. When engaged,
the plunger is pulled back into the
solenoid.
9. If the engine speed is too slow, the
engine will want to "hunt" or speed
up and slow down repeatedly. When
this occurs, increase engine speed by
adjusting throttle stop screw on
carburetor (refer to Carburetor
Adjustment in Honda Engine Manual).
10. Replace the engine linkage cover
(Models 3WY46 and 3WY45 only).

HIGH ALTITUDE OPERATION

STOPPING ENGINE

This generator will not perform well at
high altitudes without proper adjustment.
See engine owner’s manual for details.

IMPORTANT: The engine speed is preset.
The throttle is locked in preset position. Do
not adjust throttle.

ADDING ELECTRICAL LOADS

Follow the steps below to stop engine.

IMPORTANT: Do not overload generator.
Make sure total wattage of all electrical
loads does not exceed rated wattage of
generator. Overloading may shorten
generator life. It could also cause internal
damage to generator. Overloading
will trip circuit breaker.

1. Remove all electrical loads from
generator (See “Disconnecting Electrical
Loads,” above). Remove electrical loads
one at a time.

IMPORTANT: Keep full power selector
switch in the 120 VOLT ONLY position if
only powering 120V items. Only move
switch to 120/240 VOLT position if
powering 240V items.

3. Turn engine switch to the OFF position
(See Figures 33 and 34).

2. Let engine run for two or three minutes
after removing electrical loads. This lets
engine cool slightly.

ENGINE SW
ON
OFF

1. Check items to be powered. Their
nameplate lists their wattage ratings.
NOTE: The wattage ratings for some
electrical motors are misleading. They may
require 3 to 6 times their rated wattage to
start. You must figure total electrical load
wattage. Make sure total wattage of all
electrical loads does not exceed rated
wattage of generator. See “Determining
Electrical Load for Generator,” page 11.

Figure 33 – Engine Switch In OFF Position, All
Models Except 3WY46, 3WY45, and 3WY47

HONDA

2. Start engine. Let engine reach full
speed.
3. Connect electrical loads one at a time. If
the load consists of electric motors, start
them first. Always start the largest first.
Start each motor individually.
DISCONNECTING ELECTRIC LOADS
Remove electrical loads one at a time.
Remove voltage sensitive items first.
Voltage sensitive items include TVs, VCRs,
and other home electronic items.

ON
OFF

START

ENGINE SW
CIRCUIT
BREAKER

ON/push OFF

Figure 34 – Engine Switch in OFF Position,
Models 3WY46, 3WY45, and 3WY47

16

Dayton Operating Instructions and Parts Manual

Models 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A,
3WY45, and 3WY46

Operation (Continued)
4. Turn fuel valve lever off. Do this by
moving valve lever fully to the left (See
Figure 35).
Fuel Valve Lever
(Off Position)

IMPORTANT: Keep generator level when
servicing. Never turn generator upside
down or stand it on end to service.
NOTE: We supply the engine owner’s
manual with generator. Refer to that
manual for questions concerning engine
maintenance and repairs.
Non-engine parts require little maintenance. Keep generator clean. Use a damp
cloth to clean outside surfaces. Never use
water to clean generator. Water can cause
damage to internal parts. Use vacuum to
clean air inlet and outlet louvers of
alternator.
SERVICING THE ENGINE

Figure 35 – Fuel Valve Lever Off
(All Models except 3WY47)

Honda parts and services should be
handled by your nearest authorized engine
service firm. Check the yellow pages of
your telephone directory under the listing:
Engines Gasoline, Honda

Storage
Remove all fuel
from fuel tank
before storing generator. Store fuel in
approved container. Store fuel in a
well-vented area free of open flames
or sparks.
The muffler
becomes very hot
during operation. The muffler remains
hot for a while after shutdown. Let
engine cool before storing.

IMPORTANT: Keep generator level while
in storage. Never store generator upside
down or standing on end.
NOTE: We supply the engine owner’s
manual with generator. Refer to that manual
for questions concerning engine storage.
Cover and store generator in a clean, dry
place. Do not expose generator to extreme
high or low temperatures during storage.

Maintenance and Repairs
Only a qualified
electrical service
person should service and repair the
alternator on this generator. Use only
factory approved repair parts.
The engine speed is
preset. The throttle
is locked in preset position. Do not
adjust throttle. Preset position lets
engine run at 3600 RPM under load.
The engine must maintain 3600 RPM for
generator to create correct voltage.
Running engine at lower speeds will
damage generator and powered items.
Shut off generator
before performing
maintenance.

®

17

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G016.J

Dayton Operating Instructions and Parts Manual

3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Professional-Duty
Electric Generators
®

Troubleshooting Chart
NOTE: See engine owner’s manual for
engine troubleshooting.

Only a qualified
electrical service
person should service and repair
generator. Use only factory approved
repair parts.

Symptom

Possible Cause(s)

Corrective Action

Engine will not start

1. Insufficient fuel

1. Fill tank with fresh fuel

2. Oil level low

2. Fill engine crankcase with oil to the full
mark on dip stick

1. Defective capacitor

1. Replace capacitor

2. Winding short circuit or loose
connections

2. Check resistance of coils (see “Electrical
Component Specifications,” page 2)

3. Defective rotor diode

3. Replace both diodes on rotor

4. Loss of residual magnetism

4. Apply 12-volt battery to capacitor
terminals for 2-3 seconds

1. Engine speed too low

1. Set engine speed to 3720 RPM (62 Hz)
with no load

2. Defective rotor diode

2. Replace both diodes on rotor

3. Partial short circuit in winding

3. Check resistance of coils (see “Electrical
Component Specifications,” page 2)

4. Defective capacitor

4. Replace capacitor

Voltmeter reading more than
10% high with no electrical
load

Engine speed too high

Set engine speed to 3720 RPM (62 Hz)
with no load

Voltmeter reading correct with
no electrical load, but more
than 10% low when electrical
load is added

1. Defective rotor diode

1. Replace both diodes on rotor

2. Electrical load too high

2. Do not overload generator

3. Engine not running properly

3. Contact an authorized engine service
center

No voltage when starting
generator with no electrical
load

Voltage is less than normal
voltage with no electrical load

18

Dayton Operating Instructions and Parts Manual

Models 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A,
3WY45, and 3WY46

Wiring Diagrams
Stator
Black
Receptacle
120V/15A

20A
T1

T3

T4

110/120V

L1

T2

Capacitor

L2

Rotor

Yellow

Stator
White

Black

Auxiliary
Phase

Diode

Diode

Circuit
Breaker

Yellow

Red Green

Brown
T2

T3

T1

Green/Yellow

T4 Main
Windings
Yellow
Black
Red
Green

Figure 36 – Wiring Diagram, Model 3W735B
Red

Black
Red

120/240V 20A
Receptacle

White

Circuit
Breaker
25A

White

T4
Yellow

White

Black

Full Pwr
Selector
Switch

Circuit
Breaker
20A

Hour
Meter

Green
Black

Green

Main
Windings

White

T1

T4

T3

Green

Red

Capacitor
White

White

LINE

Black
Black

Circuit
Breaker
20A

Red

Red

Red

120V, 30A
Receptacle

GFCI

Black

T3

ck
Bla

Circuit
Breaker
25A

Duplex

T2

Black

Green
White
120V, 15A
Receptacle

HOT

T1

White
120V, 15A
Receptacle

WHITE

Green/Yellow

T2

T2

T1

Auxiliary
Phase
T3

T4

Stator

Rotor

Green
Red
Black

Diode

Stator

Diode

Yellow

T1

White
L1
Brown

T2

T3

T4

220/240V
110/120V

L2

110/120V

Figure 37 – Wiring Diagram, Models 3W736C, 3WY44 and 3TE27A
®

19

Version B - For Reduction

G016.J

Dayton Operating Instructions and Parts Manual

3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Professional-Duty
Electric Generators
®

Wiring Diagrams
White

Red

Black

Red

120/240V 20A
Receptacle

s1 s2

White

•
T1
To Solenoid

Circuit
Breaker
25A

Circuit
Breaker
20A

Black
White

Hour
Meter

White

Black

Green
Black

Red

Green

Main
Windings

Capacitor
White

T1

T4

T3

Green

Red

Black
Black

Red

White

White

LINE

T4
Yellow

•

Circuit
Breaker
20A

Red

Black

T3

120V, 30A
Receptacle

GFCI

HOT

Circuit
Breaker
25A

Duplex

T2
Full Pwr
Selector
Switch

Black

Green
White
120V, 15A
Receptacle

White
120V, 15A
Receptacle

WHITE

Green/Yellow

T2

T2

T1

Auxiliary
Phase
T4

T3

Stator
Stator

Rotor

Green
Red
Black

Diode

T1

T2

White

Diode

L1

Yellow

Brown

T3

T4

220/240V
110/120V

L2

110/120V

Figure 38 – Wiring Diagram, Models 3WY45 and 3WY46
White

White

Green
Black
125V, 30A
GFCI 125V, 15A
Receptacle
Receptacle

Green
125V, 15A
Receptacle

250V 30A
Receptacle

Auto-Idle
Control Board
250V 50A
Receptacle

White
White
To
Auto-Idle
Solenoid

Circuit
Breaker
30A

Red

Circuit
Breaker
45A

Run Black
Light

h
W

Circuit
Breaker
30A

Yellow

Circuit
Breaker
45A

Hour Meter

Yellow

White
White

White
T3

T2

Black
Red
Black
White

Green

Black
Red

T4

Gr
ee
n

Black

Black

T1

Circuit
Breaker
20A

White

Red

Capacitor

Circuit
Breaker
20A

White

Black
Black

Yellow

White

White

Red

Green

S2
Solenoid
S1
T1-3
L1
L2

Red

Black

Black

Main
Windings
T2

T1

T3

T4

Rotor

Stator

Stator

T1
Diode

T2

T3

T4

Diode
220/240V

L2

L1
110/120V

Figure 39 – Wiring Diagram, Model 3WY47

20

Green
Black

110/120V

3W735B

Dayton Operating Instructions and Parts Manual

For Repair Parts, call 1-800-323-0620
24 hours a day - 365 days a year
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list

1

Address parts correspondence to:
Grainger Parts
P.O. Box 3074
1657 Shermer Road
Northbrook, IL 60065-3074 U.S.A.

2

3

4
7

4
7

4
6

5

10
11

6
8

9

6
12
12

Figure 40 – Repair Parts Illustration for Model 3W735B Handle and Base Assembly

Repair Parts List
Reference
Number

Description

Part No. for
Model 3W735B

Quantity

1

Handle (includes 2 spacers)

099831-01

1

2

1/4" Lock washer

WLE-4

2

3

M6 x 35 Screw

099769-01

2

4

5/16-18 Nut

NEC-5C

3

5

Engine Spreader

099754-01

1

6

Rubber bumper

13401000

3

7

5/16" Flat washer

WP-5C

2

8

5/16-18 x 1" Screw

19165004

1

9

5/16-18 x 11/2" Screw

*

1

Isolator spacer

099767-01

1

21834000

1

19166004

2

10
11

5/16 x

1 1/ 2"

Washer

12
5/16-18 x 2" Screw
NOTE: Fuel tank is available from Engine Mfg. Co. only.
(*) Standard hardware item, available from local hardware store.

®

21

Version B - For Reduction

G016.J

3W735B

Dayton Operating Instructions and Parts Manual

For Repair Parts, call 1-800-323-0620
24 hours a day - 365 days a year
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Address parts correspondence to:
Grainger Parts
P.O. Box 3074
1657 Shermer Road
Northbrook, IL 60065-3074 U.S.A.

1

7

2

4
22

5
6

3

20
15

14
21

19

13
17

16
15
7

8
7

13
12
18

9

When replacing diodes, note the
positions of polarity bands on each.
They must be as shown in this illustration.

10

11

7

Figure 41 – Repair Parts Illustration for Model 3W735B Alternator Assembly

22

3W735B

Dayton Operating Instructions and Parts Manual

Repair Parts List for Model 3W735B Alternator Assembly

Reference
Number

Description

Part No. for
Model 3W735B

1

Top cover

099849-01

1

2

120V, 15A Duplex receptacle

15324000 †

1

3

20 Amp Circuit breaker

22616009 †

1

4

Capacitor

27002002S

1

5

M4 x 20 Screw

26333000

1

6

Terminal block

099863-01

1

7

M5 x 13 Screw

099701-01

13

8

End plate

099848-01

1

9

Quantity

Ground lug

††

1

10

8mm Flanged nut

099891-01

1

11

Bottom cover

099861-01

1

12

Draw bolt

099842-01

1

13

M6 x 16 Screw

*

4

14

Engine flange

27001005S

1

15

1/4" Lock washer

WLE-4

4

16

Stator

††

1

17

Bearing

27001002

1

18

Diode

27001009S

2

19

Rotor

††

1

20

Fan

27001006

1

21

5/16-24 x 5/8" Bolt

26327006

4

22

5/16" Lock washer

WLE-5

4

Alternator assembly

099722-01

1

∆

Safety information decal

099866-03

1

∆

Safety information decal

099866-04

1

∆

Operation decal

099867-02

1

( ) Includes reference numbers 1 through 22.
(∆) Not shown.
(†) Includes fastening hardware.
(††) Parts not available. Included in alternator assembly.
(*) Standard hardware item, available from local hardware store.

®

23

Version B - For Reduction

G016.J

3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Operating Instructions and Parts Manual

For Repair Parts, call 1-800-323-0620
24 hours a day - 365 days a year
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Address parts correspondence to:
Grainger Parts
P.O. Box 3074
1657 Shermer Road
Northbrook, IL 60065-3074 U.S.A.

23

15

22

9
21
19

9

20

10

8
14

7

18

6
5

13
16

12
4
1
17

2

11

3

Figure 42 – Repair Parts Illustration for Models 3W736C, 3WY44, 3WY46, 3TE27A, and 3WY45 Alternator Assembly

24

24

25

3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Operating Instructions and Parts Manual

Repair Parts List for Models 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46
Alternator Assembly

Reference
Number
Description

Part No. for Models:
3W736C
3WY44

3WY46

3TE27A

3WY45

Quantity

1

End cover

099844-01

099844-01

099844-01

099844-01

099844-01

1

2

M5 x 13 Screw

099701-01

099701-01

099701-01

099701-01

099701-01

6

3

Bushing

099760-01

099760-01

099760-01

099760-01

099760-01

1

4

Terminal block (4-block)

099863-01

099863-01

099863-01

—

—

1

5

Terminal block (2-block)

099863-02

099863-02

099863-02

099863-02

099863-02

1

6

Ground lug

†

†

†

†

†

1

7

#10-16 x 3/8" Screw

M11084-26

M11084-26

M11084-26

M11084-26

M11084-26

1

8

Stator bolt

099847-01

099847-02

099847-02

099847-03

099847-04

4

9

5/16" Lock washer

WLE-5

WLE-5

WLE-5

WLE-5

WLE-5

4

10

Bearing housing

099843-01

099843-01

099843-01

099843-01

099843-01

1

11

Capacitor

27004002S

27005003S

27005003S

099845-01

27007004S

1

12

Terminal post

—

100054-01

100054-01

4

13

Stator

†

†

†

†

†

1

14

Fan bracket

†

†

†

†

†

1

15

M8 x 20 Screw

*

*

*

*

*

4

16

8mm Flanged rotor nut

099891-01

099891-01

099891-01

099891-01

099891-01

1

17

Foam pad

099892-01

099892-01

099892-01

099892-01

099892-01

1

18

Draw bolt

099842-01

099842-02

099842-02

099842-03

099842-04

1

19

Bearing

27003003

27003003

27003003

27003003

27003003

1

20

Diode

27003012S

27003012S

27003012S

27003012S

27003012S

2

—

—

21

Rotor

†

†

†

†

†

1

22

Fan

27003008

27003008

27003008

27003008

27003008

1

23

Engine flange

27003007S

27003007S

27003007S

27003007S

27003007S

1

24

3/8-16 x 5/8" Bolt

*

*

*

*

*

4

25

3/8" Lock washer

*

*

*

*

*

4

Alternator assembly

099723-01

099723-02

099723-02

099723-03

099723-04

1

( ) Includes reference numbers 1 through 25.
(†) Parts not available. Included in alternator assembly.
(*) Standard hardware item, available from local hardware store.

®

25

Version B - For Reduction

G016.J

3WY47

Dayton Operating Instructions and Parts Manual

For Repair Parts, call 1-800-323-0620
24 hours a day - 365 days a year
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Address parts correspondence to:
Grainger Parts
P.O. Box 3074
1657 Shermer Road
Northbrook, IL 60065-3074 U.S.A.

19
18
20

8

13

17
15

21

26
10

12
24
5

25

11

23

1

2
6

4

16

22

9

7
3

Figure 43 – Repair Parts Illustration for Model 3WY47 Alternator Assembly

26

14

3WY47

Dayton Operating Instructions and Parts Manual

Repair Parts List for Model 3WY47 Alternator Assembly

Reference
Number

Description

Part No. for
Model 3WY47

1

Stator

†

1

2

Rotor

†

1

3

Draw bolt

103188-01

1

4

Fan

103191-01

1

5

Balancing disc

103192-01

1

6

Lifting eyes

103193-01

2

7

D.E. Bracket

103194-01

1

8

N.D.E. Bracket

103195-01

1

9

Quantity

Mounting bolts

099847-05

4

10

Nuts

099891-01

4

11

Top box

103189-01

1

12

Screw and washer

099701-01

6

13

Plastic cap

103198-01

1

14

Bearing

103199-01

1

15

Borelly washer

103200-01

1

16

Diode

27003012S

2

17

Terminal block

103201-01

1

18

Capacitor

099845-02

1

19

Tie wrap

103204-01

1

20

Foam pad

099892-02

1

21

Capacitor bracket

103202-01

1

22

Engine flange

103190-01

1

23

M8 x 20 Screw

*

4

24

'O' Ring

103203-01

1

25
26

Washer
Hex head nut

WLE-5
099891-01

2
1

Alternator assembly

102938-01

1

( ) Includes reference numbers 1 through 26.
(†) Parts not available. Included in alternator assembly.
(*) Standard hardware item, available from local hardware store.

®

27

Version B - For Reduction

G016.J

3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Operating Instructions and Parts Manual

For Repair Parts, call 1-800-323-0620
24 hours a day - 365 days a year
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Address parts correspondence to:
Grainger Parts
P.O. Box 3074
1657 Shermer Road
Northbrook, IL 60065-3074 U.S.A.
U
F

F

E
L

3

5
15
26

2

1
4
24

9

For Use In
Model 3W736C

23
25
7

6

27
7

8 6

1

21

14

16

13
16
16
17

11
16
18
13

19

2

E

22

12

F

U

10

20
11

16
11

F

13
11
16

L

11
10
23
23
14

10
24
29

10

For Use In
Models
3WY44,
3TE27A,
3WY45,
and
3WY46

16
11
28

17

24
16
11

24

28
9

Figure 44 – Repair Parts Illustration for Models 3W736C, 3WY44, 3WY46, 3TE27A, and 3WY45 Fuel Tank and Roll Cage

28

3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Operating Instructions and Parts Manual

Repair Parts List for Models 3W736C, 3WY44, 3TE27A, 3WY45, and
3WY46 Fuel Tank and Roll Cage
Reference
Number Description

Part No. for Models:
3W736C
3WY44

3WY46

3TE27A

3WY45

1

Gas cap/fuel gauge

25954000

25954001

25954001

25954001

25954001

Quantity

1

2

Gas tank (with 90° fitting)

099832-01

107021-01

107021-01

107021-01

107021-01

1

3

Breather assembly

25978000

—

—

—

—

1

4

1/4-20 x 1" Screw

HC4-8C

—

—

—

—

4

5

M5 x 10 Screw

099701-01

099701-01

099701-01

099701-01

099701-01

1

6

Gas line clamp

19508001

19508001

19508001

19508001

19508001

2

7

Fuel line

25985005

25985005

25985005

25985005

25985005

1

8

Fuel filter

099743-01

099743-01

099743-01

099743-01

099743-01

1

9

Roll cage

099752-02

106063-01

106063-01

106063-01

106063-01

1

10

1/4-20 Lock nut

103880-01

11

5/16-18 Lock nut

NEC-5C

—

—

—

—

8

—

NEC-5C

NEC-5C

NEC-5C

NEC-5C

10

—

—

—

103880-01

103880-01

—
103880-01

—

5

103880-01

3

12

Ground strap

14138000

14138000

14138000

14138000

14138000

1

13

Shock mounts

099853-02

099853-02

099853-02

099853-02

099853-02

3

14

5/16" Lock washer

WLE-5

WLE-5

WLE-5

WLE-5

WLE-5

3

15

Lock washer

WLI-3

WLI-3

WLI-3

WLI-3

WLI-3

1

16

5/16" Flat washer

WP-5C

—

—

—

—

9

WP-5C

WP-5C

WP-5C

WP-5C

13

17

5/16-18 x 13/4" Bolt

HC5-14C

HC5-14C

HC5-14C

HC5-14C

HC5-14C

2

18

Engine spreader

099756-01

099756-01

099756-01

099756-01

099756-01

1

19

5/16-18 Hook bolt

—

—

099750-01

—

099750-01

2

20

Battery mounting bracket

—

—

099749-01

—

099749-01

1

21

5/16-18 Lock nut

—

—

NEC-5C

—

NEC-5C

2

22

#8-18 x 1/2" Sems screw

100410-01

100410-01

23

1/4-20 x 1/2" Screw

M10908-74

M10908-74

—

—

—

100410-01
—
M10908-74

100410-01
M10908-74
—

100410-01

4

—

3

M10908-74

2

24

1/4" Washer

WP-4C

WP-4C

WP-4C

WP-4C

WP-4C

4

25

Linkage cover

099965-01

099965-01

099965-01

099965-01

099965-01

1

26

#10 Washer

WP-3C

WP-3C

WP-3C

WP-3C

WP-3C

1

27

90° Elbow

103676-01

103676-01

103676-01

103676-01

103676-01

1

28

1/4-20 x 2" Bolt

HC4-16C

HC4-16C

HC4-16C

HC4-16C

2

29

Spacer

—

107110-01

107110-01

107110-01

107110-01

2

∆

Safety information decal

099866-02

—

—

—

—

1

∆

Operation decal

100003-01

100003-01

100003-02

100003-01

100003-02

1

∆

Red battery cable (Positive)

—

—

099873-01

—

099873-01

1

∆

Black battery cable (Negative)

—

—

099873-02

—

099873-02

1

∆

Fuel line grommet

03175000

03175000

03175000

03175000

03175000

3

(∆) Not shown.
®

29

Version B - For Reduction

G016.J

3WY47

Dayton Operating Instructions and Parts Manual

For Repair Parts, call 1-800-323-0620
24 hours a day - 365 days a year
36

Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Address parts correspondence to:
Grainger Parts
P.O. Box 3074
1657 Shermer Road
Northbrook, IL 60065-3074 U.S.A.

35

33

9
9

10

23

37

37
10
25

10

36
10
24
22

32

9
28
29

31 30

2

26

27

18
19

37

12

20
10
9

18

37
10
25

34
10
9

10

21
19

16
17

20

15
14
F
U
E
L

F

10
21

1

13

10
4

9

6

5

3

6
7

8
12

Figure 45 – Repair Parts Illustration for Model 3WY47 Fuel Tank and Roll Cage

11

Repair Parts List for Model 3WY47 Fuel Tank and Roll Cage
Reference
Number
Description

Part No. for Models:
Model 3WY47

079503-25AA

Quantity

1

Gas tank assembly

2

Roll cage

105905-01

1

3

Axle mount

105906-01

1

30

1

3WY47

Dayton Operating Instructions and Parts Manual

Repair Parts List for Model 3WY47 Fuel Tank and Roll Cage
(Continued)
Reference
Number
Description

Part No. for Models:
Model 3WY47

Quantity

4

Axle

102933-03

1

5

Wheels

102932-01

2

6

1" Flat washer

WP-16C

4

7

Cotter pin

C4-12C

2

8

U-bolt

100135-01

2

9

5/16-18" Lock nut

NEC-5C

22

10

5/16" Flat washer

WP-5C

30

11

1/4-20" Lock nut

103880-01

4

12

1/4" Flat washer

WP-4C

8

13

Gas cap with guel gage

097190-06

1

14

Fuel line

M51151-02

1

15

Bushing

M10990-3

1

16

1/4" Barbed connector

106988-01

1

17

Fuel line

25985008

1

18

Handle

105035-01

2

19

Grip

103046-01

2

20

Plug

103057-01

2

21

5/16-18 x 2.5" Bolt

H8C5-20C

4

22

5/16-18 J-hook bolt

099750-01

2

23

Battery bracket

099749-01

1

24

Battery mount

105908-01

1

25

Shock mount

17529000

3

26

Spreader

102962-02

1

27

1/4-20 x 3.0" Bolt

H5C4-24C

4

28

1/2-10 x 1.0" Bolt

26302006

2

29

Internal tooth lockwasher

WLI-8

2

30

Ground strap

14138000

1

31

1/4-20 x .5" Tapping screw

M10908-74

1

32

External tooth lockwasher

WLE-5

1

33

Side panel

106775-02

1

34

Side panel

106775-01

1

35

Top cover

106776-01

1

36

8-18 Sems screws

100410-01

8

37

5/16-18 x 1.75" Bolt

HC5-14C

∆

Safety information decal

099866-05

12
1

∆

Operation decal

100003-04

1

∆

Red battery cable (Positive)

099873-01

1

∆

Black battery cable (Negative)

099873-05

1

∆

1/4-20 x .75" Screw

HC4-6C

2

∆

Muffler

105951-01

1

(∆) Not shown.
®

31

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G016.J

3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Operating Instructions and Parts Manual

For Repair Parts, call 1-800-323-0620
24 hours a day - 365 days a year
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Address parts correspondence to:
Grainger Parts
P.O. Box 3074
1657 Shermer Road
Northbrook, IL 60065-3074 U.S.A.

11
2
2

1

3

RE
SE
TE T
ST

5

12

0V

OL

14

TS

7

4

6
FU
LL
PO
WE
Y
R

12

0O

12

NL

SE
LE
CT
OR

12

0/2

40

V
12

0/2

40

6

VO

LT

S
RE

SE

T

RE

SE

T

13

EN
00 M
00
00
05
UR
S

HO

1/1

8

0

9
10

Figure 46 – Repair Parts Illustration for Models 3W736C, 3WY44, 3WY46, 3TE27A, and 3WY45 Control Panel

32

12

3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Operating Instructions and Parts Manual

Repair Parts List for Models 3W736C, 3WY44, 3TE27A, 3WY45, and
3WY46 Control Panel

Reference
Number Description

Part No. for Models:
3W736C
3WY44

3WY46

3TE27A

3WY45

Quantity

1

Front control panel

103349-01

103349-02

103349-02

103349-03

103349-04

1

2

20 Amp circuit breaker *

22616009

22616009

22616009

22616009

22616009

2

3

120V, 30A Twist-lock
receptacle *

099833-01

099833-01

099833-01

099833-01

099833-01

1

4

120V, 15A Duplex

15324000

15324000

15324000

15324000

15324000

1

099956-01

099956-01

099956-01

099956-01

—

1

receptacle *
5

Full power selector
switch *

6

7

20 Amp circuit breaker *

22616009

—

—

—

—

2

25 Amp circuit breaker *

—

22616011

22616011

—

—

2

30 Amp circuit breaker *

—

—

—

22616010

22616010

2

099834-01

099834-01

099834-01

—

1

—

—

—

—

099835-01

1

120/240V, 20A Twist-lock 099834-01
receptacle *
120/240V, 30A Twist-lock
receptacle *

8

Hour meter

101350-01

101350-01

101350-01

101350-01

101350-01

1

9

Bushing

099760-01

099760-01

099760-01

099760-01

099760-01

1

10

#8-18 x 1/2" Sems screw

100410-01

100410-01

100410-01

100410-01

100410-01

4

11

Control box

100149-01

100149-01

100149-01

100149-01

100149-01

1

12

U-Nut

22261000

22261000

22261000

22261000

22261000

8

13

Switch plug

099997-01

099997-01

099997-01

099997-01

099997-01

1

14

120V, 15A Duplex (GFCI)

100445-01

100445-01

100445-01

100445-01

100445-01

1

Control panel assembly

103348-01

103348-02

103348-06

103348-03

103348-08

1

Panel schematic decal

100177-07

100177-07

100177-06

100177-07

100177-06

1

receptacle
∆

( ) Includes reference numbers 1 through 14.
(∆) Not shown.
(*) Includes fastening hardware.

®

33

Version B - For Reduction

G016.J

3WY47

Dayton Operating Instructions and Parts Manual

For Repair Parts, call 1-800-323-0620
24 hours a day - 365 days a year
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Address parts correspondence to:
Grainger Parts
P.O. Box 3074
1657 Shermer Road
Northbrook, IL 60065-3074 U.S.A.

2

14

2
6
16

1
3
Re

se

12

t

0

RE

SE
TE T
ST

11

Vo

12

lt

Re

7

se

t

4

Off

Au
to

5

Idle

Se
lec
tor

5
On

12
20
0V
p;t

15
9

Re

8

se

Re

se

t

t

Re

Re

E
00 NM
00
00
0

HO

UR

S

5

1/1

0

10

13
4

Figure 47 – Repair Parts Illustration for Model 3WY47 Control Panel

34

se

se

t

t

5

3WY47

Dayton Operating Instructions and Parts Manual

Repair Parts List for Model 3WY47 Control Panel

Reference
Number

Description

Part No. for
Model 3WY47

1

Control panel

103182-01

1

2

20 Amp circuit breaker

22616009

2

3

120V, 30A Twist-lock receptacle

099833-01

1

4
5

#8-18 x 1/2" Sems screw
U-nut

100410-01
22261000

16
20

6

120V, 15A Duplex (GFCI) receptacle

100445-01

1

7

125/250V, 50A Receptacle

103183-01

1

8

45 Amp circuit breaker

103184-01

2

9

Run light

26299000

1

10

Hour meter

101350-01

1

11

120/240V, 20A Twist-lock receptacle

099834-01

1

12

30 Amp circuit breaker

22616010

2

13

Bushing

099760-01

1

14

Control box

103185-01

1

15

Rocker switch

100366-01

1

16

120V, 15A Duplex receptacle

15324000

1

Control panel assembly

102927-01

1

Quantity

∆

Panel schematic diagram

100177-05

1

∆

Auto-idle PC board kit

103257-01

1

∆

Solenoid assembly kit (with bracket)

103258-02

1

( ) Includes reference numbers 1 through 16.
(∆) Not shown.

®

35

Version B - For Reduction

G016.J

3WY47, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Dayton Operating Instructions and Parts Manual

For Repair Parts, call 1-800-323-0620
24 hours a day - 365 days a year
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Address parts correspondence to:
Grainger Parts
P.O. Box 3074
1657 Shermer Road
Northbrook, IL 60065-3074 U.S.A.

12

10
13

6
14

7

8
10

11

9
8

Solenoid Assembly and Mounting

3

S1

5
L2

L1

S2

DE
SA
IN
TE
RN
AT
IO
NA
L

4

2
1
Control Board Assembly and Mounting
Figure 48 – Repair Parts Illustration for Solenoid and Control Board Assemblies and Mounting

36

Dayton Operating Instructions and Parts Manual

3WY47, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Repair Parts List for Solenoid and Control Board Assemblies and Mounting for Models 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Reference
Number

Description

Part No.

Quantity

1

Control board assembly

100105-01

1

2

10-32 x 3/4" Hex head screw

26499000

4

3

Nylon spacer

100321-01

4

4

#10 Flat washer

WP-3C

4

5

10-32 Lock nut

26514000

4

6

Solenoid assembly (includes plunger, nut,

100324-03

1

and lock washer)
7

Retaining ring*

103812-01

1

8

Linkage rod

100755-01

1

Linkage rod*

100755-02

1

Roll pin

22822000

1

10

Solenoid mounting bracket*

102939-01

1

Solenoid mounting bracket

100756-01

1

11

Nylon washer*

103811-01

1

12

M8 x 25mm Bolt

100328-01

1

13

5/16" Flat washer

02407002

1

14

M8 Lock nut

100329-01

1

∆

Yellow wire

100320-01

1

∆

White wire (with 2 flags)

100322-01

1

∆

White wire (with 1 flag and 1 spade)

100322-02

1

∆

Rocker switch

100366-01

1

∆

Auto-idle decal

100334-01

1

9

(*) Model 3WY47 only.
(∆) Not shown.

®

37

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G016.J

Dayton Operating Instructions and Parts Manual

3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Notes

____________________________________________________________________________________________________________________
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____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________

38

Dayton Operating Instructions and Parts Manual

3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46

Notes

____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
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____________________________________________________________________________________________________________________
®

39

Version B - For Reduction

G016.J

Dayton Operating Instructions and Parts Manual

3W735B, 3W736C, 3WY44, 3WY46, 3TE27A, 3WY45, 3WY47

Dayton Professional-Duty
Electric Generators

NOTE: The five-year limited warranty below covers all non-engine parts of this generator including the alternator. Honda warrants the
engine. See engine owner’s manual for engine warranty information.

LIMITED WARRANTY
DAYTON FIVE-YEAR LIMITED WARRANTY. Dayton Professional-Duty Electric Generators, Models covered in this manual, are
warranted by Dayton Electric Mfg. Co. (Dayton) to the original user against defects in workmanship or materials under normal use
for one year after date of purchase. Any part which is determined to be defective in material or workmanship and returned to an
authorized service location, as Dayton designates, shipping costs prepaid, will be, as the exclusive remedy, repaired or replaced at
Dayton’s option. For limited warranty claim procedures, see PROMPT DISPOSITION below. This limited warranty gives purchasers
specific legal rights which vary from jurisdiction to jurisdiction.
LIMITATION OF LIABILITY. To the extent allowable under applicable law, Dayton’s liability for consequential and incidental damages
is expressly disclaimed. Dayton’s liability in all events is limited to, and shall not exceed, the purchase price paid.
WARRANTY DISCLAIMER. Dayton has made a diligent effort to provide product information and illustrate the product in this literature
accurately; however, such information and illustrations are for the sole purpose of identification, and do not express or imply a warranty that
the products are MERCHANTABLE, or FIT FOR A PARTICULAR PURPOSE, or that the products will necessarily conform to the illustrations or
descriptions.
Except as provided below, no warranty or affirmation of fact, expressed or implied, other than as stated in “LIMITED WARRANTY” above
is made or authorized by Dayton.
PRODUCT SUITABILITY. Many jurisdictions have codes and regulations governing sales, construction, installation, and/or use of products
for certain purposes, which may vary from those in neighboring areas. While Dayton attempts to assure that its products comply with such
codes, it cannot guarantee compliance, and cannot be responsible for how the product is installed or used. Before purchase and use of a
product, review the product applications, and all applicable national and local codes and regulations, and be sure that the product, installation, and use will comply with them.
Certain aspects of disclaimers are not applicable to consumer products; e.g., (a) some jurisdictions do not allow the exclusion or limitation
of incidental or consequential damages, so the above limitation or exclusion may not apply to you; (b) also, some jurisdictions do not
allow limitations on how long an implied warranty lasts, consequently the above limitation may not apply to you; and (c) by law, during
the period of this Limited Warranty, any implied warranties of implied merchantability or fitness for a particular purpose applicable to
consumer products purchased by consumers, may not be excluded or otherwise disclaimed.
PROMPT DISPOSITION. Dayton will make a good faith effort for prompt correction or other adjustment with respect to any product
which proves to be defective within limited warranty. For any product believed to be defective within limited warranty, first write or call
dealer from whom product was purchased. Dealer will give additional directions. If unable to resolve satisfactorily, write to Dayton at
address below, giving dealer’s name, address, date and number of dealer’s invoice, and describing the nature of the defect. Title and risk of
loss pass to buyer on delivery to common carrier. If product was damaged in transit to you, file claim with carrier.
Manufactured for Dayton Electric Mfg. Co., 5959 W. Howard St., Niles, Illinois 60714 U.S.A.

Manufactured for Dayton Electric Mfg. Co.
Niles, Illinois 60714 U.S.A.
40

112064-01
Rev. A
08/03

®

Version B - For Reduction

G016.J



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Creator                         : Keith Peterson
Title                           : 106814-01
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