Ryobi 21AB454B734 User Manual REAR TILLER Manuals And Guides 1109429L

454 1109429L

User Manual: Ryobi 21AB454B734 21AB454B734 RYOBI REAR TILLER - Manuals and Guides View the owners manual for your RYOBI REAR TILLER #21AB454B734. Home:Lawn & Garden Parts:Ryobi Parts:Ryobi REAR TILLER Manual

Open the PDF directly: View PDF .
Page Count: 20

Download
Open PDF In Browser	View PDF

BIo
Operator's Manual

Rear Tine Tiller
Model 454

IMPORTANT:

READ SAFETY

RULES AND INSTRUCTIONS

CAREFULLY

Warning:

This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forestcovered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a spark arrester meeting
applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator.
In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have
similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized
service dealer or contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-0019.

MTD LLC P.O. BOX 361131 CLEVELAND,
PRINTED IN U.S.A.

OHIO 44136-0019
FORM NO. 769-00030B
(10/2003)

TABLEOFCONTENTS
Content

Page
3
5
7

Important Safe Operation Practices
Assembling Your Tiller
Know Your Tiller
Operating Your Tiller
Making Adjustments

8
10

Content
Maintaining Your Tiller
Troubleshooting
Illustrated Parts List

Page
10
12
14
20

Warranty

FINDINGMODELNUMBER
This Operator's Manual is an important part of your new tiller. It will help you assemble, prepare and
maintain the unit for best performance. Please read and understand what it says.
Before you start assembling your new equipment, please locate the model plate on the
equipment and copy the information from it in the space provided below. A sample model plate is
also given below. You can locate the model plate by standing at the operating position and
looking down at the center of the rear tine cover. This information will be necessary to use the
manufacturer's web site and/or help from the Customer Support Department or an authorized
service dealer.

_ww.RVvobiOOutdo_oRor.!j

MT8O. BOX
LLC
P.
CLEVELAND,

361131
OH 44136

338-558-721

Copy

the model

Copy

the serial

number
number

here:
here:

888-345-8746

CUSTOMER
SUPPORT
Please do NOTreturn theunit to the retailer from where it waspurchased,withoutfirst contactingCustomerSupport.
If you have difficulty assembling this product or have any questions regarding the controls, operation or
maintenance of this unit, you can seek help from the experts. Choose from the options below:
Visit ryobioutdoor.com for many useful suggestions. Click on Customer Support button and
you will get the four options reproduced here. Click on the appropriate button and help is
immediately available.

answer you are
looking for could be just
a mouse

c//cA awayf

answer

looking
a mouse

are

for could be just
"

c//cA awayf

If you prefer to reach a Customer Support Representative, please call 1- 800-345-8746.

En ine

The engine manufacturer is responsible for all engine-related issues with regards to
performance, power-rating, specifications, warranty and service. Please refer to the engine
manufacturer's Owner's/Operator's Manual, packed separately with your unit, for more
information.

SECTION1: IMPORTANT
SAFEOPERATION
PRACTICES
WARNING:

This symbol points out important safety instructions which, if not followed, could
endanger the personal safety and/or property of yourself and others. Read and follow all instructions in
this manual before attempting to operate this machine. Failure to comply with these instructions may
result in personal injury. When you see this symbol - heed its warning.

WARNING:

Engine Exhaust,

some of its constituents,

and certain vehicle

components contain or emit chemicals known to State of California
and birth defects or other reproductive harm.
DANGER:

to cause cancer

This machine was built to be operated according to the rules for safe operation in this

manual. As with any type of power equipment, carelessness or error on the part of the operator can
result in serious injury. This machine is capable of amputating hands and feet and throwing objects.
Failure to observe the following safety instructions could result in serious injury or death.

Training
1.

Read, understand, and follow all instructions on the
machine and in the manual(s) before attempting to
assemble and operate. Keep this manual in a safe
place for future and regular reference and for
ordering replacement parts.
Be familiar with all controls and their proper
operation. Know how to stop the machine and
disengage them quickly.
Never allow children under 14 years old to operate
this machine. Children 14 years old and over should
read and understand the operation instructions and
safety rules in this manual and should be trained
and supervised by a parent.
Never allow adults to operate this machine without
proper instruction.
Keep bystanders, helpers, pets and children at least
75 feet from the machine while it is in operation.
Stop machine if anyone enters the area.

7.
8.
9.
10.
11.
12.

spilled on yourself or your clothes which can ignite.
Wash your skin and change clothes immediately.
Use only an approved gasoline container.
Extinguish all cigarettes, cigars, pipes and other
sources of ignition.
Never fuel machine indoors.
Never remove gas cap or add fuel while the engine
is hot or running.
Allow engine to cool at least two minutes before
refueling.
Never over fill fuel tank. Fill tank to no more than ½

15.

inch below bottom of filler neck to provide space for
fuel expansion.
Replace gasoline cap and tighten securely.
If gasoline is spilled, wipe it offthe engine and
equipment. Move machine to another area. Wait 5
minutes before starting the engine.
Never store the machine or fuel container inside

Preparation

16.

near an open flame, spark or pilot light (e.g.
furnace, water or space heater, clothes dryer etc.).
Allow machine to cool 5 minutes before storing.

Operation

4.
5.

3.
4.
5.

Thoroughly inspect the area where the equipment is
to be used. Remove all stones, sticks, wire, and
other foreign objects which could be tripped over
and cause personal injury.
Wear sturdy, rough-soled work shoes and close
fitting slacks and shirt. Loose fitting clothes or
jewelry can be caught in movable parts. Never
operate this machine in bare feet or sandals.
Disengage clutch levers and shift (if provided) into
neutral CN") before starting the engine.
Never leave this machine unattended with the
engine running.
Never attempt to make any adjustments while
engine is running, except where specifically
recommended in the operator's manual.
To avoid personal injury or property damage use
extreme care in handling gasoline. Gasoline is
extremely flammable and the vapors are explosive.
Serious personal injury can occur when gasoline is

13.
14.

1.
2.
3.

Do not put hands or feet near rotating parts. Contact
with the rotating parts can amputate hands and feet.
Do not operate machine while under the influence
of alcohol or drugs.
Never operate this machine without good visibility
or light. Always be sure of your footing and keep a
firm hold on the handles.
Keep bystanders, helpers, pets, and children at
least 75 feet from the machine while it is in
operation.
area.

Stop the machine if anyone enters the

Be careful when tilling in hard ground. The tines
may catch in the ground and propel the tiller
forward. If this occurs, let go of the handle bars and
do not restrain the machine.

Exercise extreme caution when operating on or
crossing gravel surfaces. Stay alert for hidden
hazards or traffic. Do not carry passengers.

7.
8.
9.
10.
11.

12.

13.
14.
15.
16.
17.

18.
19.
20.
21.

Neveroperate
themachine
athightransport
speedsonhardorslippery
surfaces.
Exercise
cautiontoavoidslipping
orfalling.
Lookdownandbehindandusecarewhenin
reverse
orpullingmachine
towards
you.
Starttheengineaccording
totheinstructions
found
inthismanual
andkeepfeetwellawayfromthe
tinesatalltimes.
Afterstriking
aforeignobject,stoptheengine,
disconnect
thesparkplugwireandgroundagainst
theengine.
Thoroughly
inspect
themachine
forany
damage.
Repair
thedamage
beforestarting
and
operating.
Disengage
allclutchleversandstopengine
before
youleavetheoperating
position
(behind
the
handles).
Waituntilthetinescometoacomplete
stopbeforeunclogging
thetines,makingany
adjustments,
orinspections.
Neverrunanengine
indoorsorina poorly
ventilated
area.Engineexhaust
contains
carbon
monoxide,
anodorless
anddeadlygas.
Mufflerandenginebecome
hotandcancausea
burn.Donottouch.
Usecaution
whentillingnearfences,buildings
and
underground
utilities.Rotating
tinescancause
property
damage
orpersonal
injury.
Donotoverload
machine
capacity
byattempting
to
tillsoiltodeepattofastofarate.
Ifthemachine
shouldstartmaking
anunusual
noise
orvibration,
stoptheengine,disconnect
thespark
plugwireandgrounditagainsttheengine.Inspect
thoroughly
fordamage.
Repairanydamage
before
startingandoperating.
Keepallshields,
guardsandsafetydevices
inplace
andoperating
properly.
Neverpickuporcarrymachine
whiletheengineis
running.
Useonlyattachments
andaccessories
approved
by
themanufacturer.
Failuretodoso,canresultin
personal
injury.
Ifsituations
occurwhicharenotcovered
inthis
manual,
usecareandgoodjudgment.
Contact
your
dealerortelephone
1-800-345-TRIM
(8746)for
assistance
andthenameofyournearest
servicing
dealer.

Maintenance& Storage
1.
2.

Never tamper with safety devices. Check their
proper operation regularly.
Check bolts and screws for proper tightness at
frequent intervals to keep the machine in safe
working condition. Also, visually inspect machine for
any damage.
Before cleaning, repairing, or inspecting, stop the
engine and make certain the tines and all moving
parts have stopped. Disconnect the spark plug wire
and ground it against the engine to prevent
unintended starting.

6.
7.

9.
10.

Do not change the engine governor settings or
over-speed the engine. The governor controls the
maximum safe operating speed of the engine.
Maintain or replace safety and instruction labels, as
necessary.
Follow this manual for safe loading, unloading,
transporting, and storage of this machine.
Never store the machine or fuel container inside
where there is an open flame, spark or pilot light
such as a water heater, furnace, clothes dryer etc.
Always refer to the operator's manual for proper
instructions on off-season storage.
If the fuel tank has to be drained, do this outdoors.
Observe proper disposal laws and regulations for
gas, oil, etc. to protect the environment.

YourResponsibility
1.

Restrict the use of this power machine to persons
who read, understand and follow the warnings and
instructions in this manual and on the machine.

The safety label on the tiller is reproduced below for
your review. To ensure safe operation of the tiller,
follow the instructions on all labels closely.

SECTION2: ASSEMBLING
YOURTILLER
NOTE:

References to fight or left side of the tiller are
determined from behind the unit in the operating
position.

Flat Washer

rpin Clip

Clevis Pin

ToRemoveUnitFromCarton
•

Remove staples, break glue on top flaps, or cut
tape at carton end and peel along top flap to open
carton.

•

Remove loose parts included with unit (i.e.,
operator's manual, etc.).
Cut corners and lay carton down flat.
Remove packing material.
Roll or slide unit out of carton. Check carton

•
•
•
•

Rear Tine
Shield
Depth

thoroughly for loose parts.
Extend control cable and lay on the floor. Be careful
not to bend or kink control cable.

IMPORTANT: This unit is shipped without gasoline or oil
in the engine. Be certain to service engine with gasoline
and oil as instructed in the separate engine manual
before operating your machine.

Hex Bolt

T-Knob

Figure 1

Attaching
HandleAssembly
•

LoosePartsIn Carton
Depth Stake

•

Handle Assembly
Shift Rod

•

NOTE: All hardware needed for assembly is attached
to the loose parts or the tiller.

Remove top two bolts and flange lock nuts from
handle mounting brackets, but do not remove the
bottom bolt and nut. See Figure 2.
Place handle assembly in position between the
handle mounting brackets.
Line up holes in handle with holes in bracket and
secure with hardware previously removed.
Remove
Assembly

BeforeAssembly
Handle
Bracket

wire and ground
WARNING:
Disconnect
it against the
thespark
engineplug
to
prevent unintended starting.

Attaching
DepthStake
•
•

•

•
•

•

Tip the tiller forward so it rests on front
counterweight.
Unthread the "T" knob from the top of the depth
stake and remove the flat washer and hex bolt.
Remove the hairpin clip from the clevis pin.
See Figure 1.
Raise the rear tine shield and insert the depth stake
assembly in the slot (under the tine shield) and up
through the tine shield assembly.
Insert clevis pin through the tine shield and depth
stake assemblies. Secure with hairpin clip.
Insert hex bolt into the top hole of the depth stake
assembly. Place flat washer on the hex bolt and
thread "T" knob onto the hex bolt. Tighten securely.
See Figure 1.
Tip the tiller back down so it rests on the tines.

Figure 2

AttachingClutchCable
Attach the clutch cable to the handle as follows:
(be careful not to kink the cable)
•
•

Remove threaded eyebolt and nut from the end of
the cable.
Route the clutch cable to the right side of the
handle mounting brackets and underneath the
handle.

Pushthecablethroughtheholeinthecenterofthe
handleandsnapintheplasticfitting.SeeFigure3.
Slot Head Screw, Nut,
& Flat Washers

•

Internally
Threaded Tube

Insert the shorter, (angled), end of the control rod
through the indicator bracket on the shift cover and
secure with hairpin clip that was previously
removed. See Figure 5.
Insert the longer end of the control rod through the
hole in the gear selector handle and secure with
hairpin clip.See Figure 6.

Rubber

Rod

Clip

Fitting

Idler Pulley

Figure 3
•
•

•

Figure 5

Remove slot head screw, nut, and two flat washers
from the clutch bail. See Figure 4.
Fasten the threaded eyebolt onto bail by securing
from top with slot head screw, flat washers and lock
nut.
Thread eyebolt and nut removed earlier into the
internally threaded tube at the end of the cable.
Thread engagement should be about 314". Tighten
nut against tube at end of cable. See Figure 4.
Slot Head Screw

Clutch

Flat Washers
Nut

FinalClutchAdjustment
IMPORTANT:Service the engine with oil and gasoline
before checking this adjustment. Refer to the separate
engine manual packed with your tiller for proper fuel
and engine oil recommendations.
Position the tiller so the front counterweight is against a
solid object, such as a wall. With the gear selection
lever in NEUTRAL, start the engine. Refer to the
separate engine manual.
Standing on the right side of the tiller, examine the belt
(inside the belt cover). It should not be turning.

,i_

Threaded Tube

Figure 4

NOTE:

Do not overtighten clutch cable. Too much
tension may cause it to break.

clutch
cable adjustment
operating
ARNING:
Be certainbefore
to check
the
the tiller.

AttachingControlRod
•
•

Make sure the handle assembly is in the highest
position. Refer to Know Your Tiller section.
Remove hairpin clips from control rod, (rubber
washers to remain on control rod).

belt cover.
WARNING:

Do not put fingers

under the

If the belt turns without bail engaged, adjust by
unthreading the internally threaded tube at the end of
the cable a few turns clockwise (when standing in
operator's position) and then retighten the nut against
the tube.
Now move the shift lever to FORWARD position.
Carefully engage the clutch by lifting the clutch control
bail against the handle. The wheels should spin.
If the wheels do not spin with the unit in forward,
adjust by unthreading the tube at the end of the cable a
few turns counter-clockwise (when standing in
operator's position) and then retighten the nut against
the tube.
Recheck both adjustments, and readjust as necessary.

NOTE:

A secondary cable adjustment is available if
you reach the point that additional adjustment is
needed. Remove the belt cover and move the hex nuts
at the other end of the cable towards the end of the
casing. Then readjust the hex nuts at the handle.

Tire Pressure
The tires on your unit may be over-inflated for shipping
purposes. Reduce the tire pressure before operating
the unit. Recommended operating tire pressure is
approximately 20 p.s.i. (check sidewall of tire for tire
manufacturer's recommended pressure).
WARNING:
Maximum
tire pressure
under any circumstances is 30 p.s.i. Equal
tire pressure should be maintained on
both tires.

SECTION3: KNOWYOURTILLER

Gear Selection
Handle

Handle Adj
Crank

Stake

Figure 6

GearSelectionHandle
The gear selection handle is located in the center of the
handle on the tiller. It is used to select NEUTRAL,
REVERSE, or one of the FORWARD modes. Pull or
push the handle so that the indicator on top of shift
cover points to the operating mode desired.
See Figure 6.
Neutral
Transmission is in neutral.
Reverse
Reverse wheel drive.
Forward Modes
Wheels Forward: Forward wheel drive only.

Tines Reverse: Forward wheel drive and reverse tine
drive.
Tines Forward:

Forward wheel and tine drive.

IMPORTANT: Use the reverse tine drive when tilling
virgin ground, sod, or hard soil. Use the forward tine
drive when cultivating or tilling soft ground.

NOTE: If difficulty is encountered in moving the gear
selection handle, refer to following helpful hints:
•

To shift into forward or reverse wheel drive, move
tiller forward slightly then backward to allow the
gears to synchronize.

•

Toshiftintoforwardwheelsandtinedrive,push
forwardslightlyonthegearselectionhandleand
slowlyengagetheclutchcontrolallowingthegears
tosynchronize.
Tostopforwardmovement
andtinedrive,release
theclutchcontrol.Donotshiftgearswiththeclutch
controlengagedexceptwhenengaging
thetines.
is

NEUTRAL when Make
startingcertain
the engine.
WARNING:
unit

ThrottleControl
The throttle control lever is located on the engine. It
controls the engine speed and stops the engine.

ChokeLever(If Equipped)
The choke lever is located by the throttle. It is used to
enrich the fuel mixture in the carburetor when starting a
cold engine.

Primer Button(If Equipped)

ClutchControl

The primer button is located behind the air cleaner. It is
used to enrich the fuel mixture in the carburetor when
starting a cold engine.

The clutch control is located beneath the handle.
Squeezing the clutch control against the handle
engages the wheel and tine drive mechanisms.

NOTE: Never engage clutch lever while shifting.

DepthStake

HandleAdjustmentCrank

The depth stake controls the tilling depth. Refer to
"Setting the Depth" in the Operating Section.

The handle may be adjusted to the height desired.
Loosen the handle adjustment crank a few turns. Pivot
handle up or down to desired position. Tighten lock.

EngineControls
See the separate engine manual for additional
information and functions of the engine controls.

SECTION4: OPERATING
YOURTILLER
_,

follow all instructions
warnings on and
the
WARNING:
Read, and
understand,
machine
and in this manual before
operating.

•
•

•

BeforeStarting

NOTE: A warm engine may not require choking or to

GasAndOil Fill-Up
Service the engine with gasoline and oil as instructed in
the separate engine manual packed with your tiller.
Read instructions carefully.

WARNING:

Use

extreme

care

when

handling gasoline. Gasoline is extremely
flammable and the vapors are explosive.
Never fuel machine indoors or while the
engine is hot or running.

StartingEngine
NOTE: When pushing the unit with the engine off, you
will hear a ratcheting
normal.

Place gear selection lever in NEUTRAL.
Place the throttle control lever in FAST position or if
equipped, place the engine speed control in the
START position.
Move choke lever to CHOKE position or if
equipped, push primer two (2) or three (3) times.
Wait about two (2) seconds between each push.

sound (gear noise)

which is

be primed.
•

•

•
•

Stand at side of tiller. Grasp the starter handle and
pull out slowly, until it pulls slightly harder. Let rope
rewind slowly.
Pull starter handle rapidly. Do not allow handle to
snap back. Allow it to rewind slowly while keeping a
firm hold on the starter handle.
Repeat previous steps until engine starts.
As engine warms up and begins to operate evenly,
move choke lever gradually to RUN position. If
engine falters, return to choke position, then slowly
move to RUN position.

NOTE: See your engine manual packed with your unit
for more detailed instructions.

NOTE: After starting and prior to using the tiller for the
_

in
front of theBetiller
theis engine
WARNING:
sure while
no one
standingis
running or being started.

first time, be certain to check the clutch adjustment as
described in "Checking the Clutch Adjustment" section
of the Assembly Instructions.

•

ToStopEngine
•
•

Move throttle control to STOP or OFF position.
Disconnect spark plug wire and ground to prevent
accidentally starting while equipment is
unattended.

NOTE:

After the first ten hours of operation, recheck
the clutch adjustment. Refer to final clutch adjustment
in Assembly Instructions.

SettingTheDepth
Tilling depth is controlled by the depth stake which can
be adjusted to five different settings. Adjust the side
shields as you adjust the depth stake.

disconnected
andcertain
grounded
WARNING: Be
spark against
plug wire the
is
engine when performing any adjustments.
•

When using the tiller for the first time, use the
second adjustment hole from the top (1" of tilling
depth). See Figure 7.
Use This Position f

_ort Position

When breaking up sod and for shallow cultivation,
use the setting which gives 1" of tilling depth
(second hole from the top). Place the side shields in
their lowest position.
•
For further depth, raise the depth stake and side
shields and also make one or two more passes
over the area.
•
When tilling loose soil, the depth stake may be
raised to its highest position (use bottom
adjustment hole) to give the deepest tilling depth.
Raise the side shields to their highest position.
•
To transport tiller, lower the depth stake (use top
adjustment hole).
To adjust the depth stake, remove the clevis pin and
hairpin clip. Move the depth stake to the desired setting
and secure with the clevis pin and hairpin clip.
See Figure 7.
To adjust the side shields, remove the wing nuts. Move
the side shield to the desired position and replace the
wing nuts. Tighten securely.

OperatingtheTiller
•
•
•

Select the depth stake setting.
Start engine as instructed on the previous page.
Move gear selection handle to one of the forward
modes or reverse.

Clevis Pin

WARNING:

Do not move the gear
selection handle with the wheels or tines
engaged. Make certain the unit is stopped
completely
before changing
the gear
selection. A partial engagement may be
necessary when engaging tines.
IMPORTANT:Use the reverse tine drive when tilling
virgin ground, sod, or hard soil. Use the forward tine
drive when cultivating or tilling soft ground.
•

Squeeze the clutch handle against the handle to
engage the wheels and tines.

NOTE:

Make certain the gear selection indicator is
correctly positioned before engaging the clutch handle.
If it is between gears, the engine will stall.

Use This Hole For
Lowest (Shallowest)
Position

Shields

To transport tiller, do not engage the tines. Select the
wheel drive only.

handles so thatDo
thenot
wheels
lifted on
offthe
WARNING:
pusharedown
the
ground while using the tine drive, or the
tiller could move backward and cause
personal injury.
This Hole For
Highest (Deepest)
Position

Figure 7

For best results, it is recommended the garden be tilled
twice (lengthwise, then widthwise) to pulverize the soil.

SECTION5: MAKINGADJUSTMENTS
With the engine off and the clutch control bail
disengaged, shift the gear selection handle to each
forward mode. If the indicator bracket touches the idler

adjustments while
WARNING:
Neverthe
attempt
engineto ismake
running,
any
except where specified
in operator's
manual.

pulley rod (with the clutch control bail disengaged), then
an adjustment is necessary.

HandleAdjustment

•

The handle height may be adjusted to the desired
height. Refer to the handle adjustment in Know Your
Tiller section.

•
•

BeltTensionAdjustment

•

Periodic adjustment of the belt tension may be required
due to normal stretch and wear on the belt. Adjustment
is needed if the tines or wheels seem to hesitate while

•
•

turning, but the engine maintains the same speed.
To adjust the tension on the belt, refer to Final Clutch
Adjustment in Assembly Instructions.

Disconnect and ground out spark plug wire against
the engine.
Remove the belt cover as described under Belt
Replacement in the Maintenance section.
Remove the hairpin clip and spring washer from the
idler pulley rod. Refer to Figure 9.
Move the idler pulley rod to the lower hole in the
idler bracket.
Replace the spring washer and hairpin clip.
Check clearance of the idler pulley rod to the
indicator bracket by shifting to each forward mode,
as before.

EngineAdjustment

After belt tension has been adjusted, if the belt is
excessively stretched, you may need to adjust the idler
pulley rod. This can easily be checked.

Refer to the separate engine manual for engine
adjustment instructions.

SECTION6: MAINTAININGYOURTILLER
_

Clean the engine regularly with a cloth or brush. Keep
the cooling system (blower housing area) clean to
permit proper air circulation which is essential to engine
performance and life. Be certain to remove all dirt and
combustible debris from muffler area.

wire
and ground
it against
WARNING:
Disconnect
the the
sparkengine
plug
before
performing
any
repairs
or
maintenance.

Engine

Lubrication

Refer to the separate engine manual for engine
maintenance instructions.

Transmission

Maintain engine oil as instructed in the separate
engine manual packed with your unit. Read and follow
instructions carefully.

The transmission is pre-lubricated and sealed at the
factory. It requires no checking unless the transmission
is disassembled. To fill with grease, lay the right half of
the transmission on its side, add 22 ounces of
Benalene 920 grease, and assemble the left half to it.
This grease can be obtained at your nearest authorized
dealer by ordering part number 737-0300.

Service air cleaner every ten hours under normal
conditions. Clean every hour under extremely dusty
conditions. Poor engine performance and flooding
usually indicates that the air cleaner should be
serviced. To service the air cleaner, refer to the
separate engine manual packed with your unit.

Clutch Handle
Lubricate the pivot point on the clutch handle and the
cable at least once a season with light oil. The control
must operate freely in both directions.

IMPORTANT: Never run your engine without air cleaner
completely assembled.

Pivot Points

The spark plug should be cleaned and the gap reset
every 25 hours of engine operation. Spark plug
replacement is recommended at the start of each tiller
season; check engine manual for correct plug type and
gap specification.

Lubricate all pivot points and linkages at least once a
season with light oil.
Tine Shafts
Remove tine assemblies and lubricate the tine shafts at
least once a season.

Wheel Shafts
Remove wheel assemblies and lubricate the axle shafts
at least once a season.

Rod

Idler Puny

Cleaning
TineArea
Clean the underside of the tine shield after each use.
The dirt washes off the tines easier if rinsed off

immediately instead of after it dries. Always towel dry
the tiller afterwards and apply a light coat of oil or
silicone to prevent rusting or water damage.
_lt Keeper
Bracket

IMPORTANT: Never use a "pressure washer" to clean
your tiller. Water can penetrate tight areas of the tiller
and its chaincase and cause serious damage to the
unit.

Figure 9

Off-Seas0n
Storage

BeltReplacement

If the tiller will not be used for a period longer than 30
days, the following steps should be taken to prepare the
tiller for storage.

Your tiller has been engineered with a belt made of
special material (Kevlar Tensile) for longer life and
better performance. It should not be replaced with an
off-the-shelf belt. Order all belts through you authorized
service dealer.
•
•

•

Disconnect and ground the spark plug wire against
the engine.
Remove the belt cover from the left side of the tiller

•

by remove two torx screws from the top of belt
cover. See Figure 8.
Remove the hex cap nut and flat washer from the
side of the belt cover and remove the self tap screw
at the bottom of the front of the cover.

•
•
•

Torx Screws
Belt Cover

Clean the exterior of engine and the entire tiller
thoroughly. Lubricate the tiller as described in the
lubrication instructions.
We do not recommend the use of pressure
washers to clean your unit. They may cause
damage to electric components, spindles, pulleys,
bearings or the engine. The use of pressure
washers will result in shortened life and reduce
serviceability.
Refer to the engine manual for correct engine
storage instructions.
Wipe tines with oiled rag to prevent rust.
Store tiller in a clean, dry area. Do not store next to
corrosive materials, such as fertilizer.

NOTE:

When storing any type of power equipment in
an unventilated or metal storage shed, care should be
taken to rustproof the equipment. Using a light oil or
silicone, coat the equipment and especially any
springs, bearings, and cables.

Figure 8
•

•

Idler Bracket

Remove the belt keeper bracket located behind the
engine pulley by removing two hex bolts and lock
washers. See Figure 9.
Remove belt and reassemble new belt. Follow
instructions in reverse order.

NOTE:

Upon reassembly, make certain the belt is
routed over the idler pulley and inside of belt keepers by
engine pulley. See Figure 9.

SECTION7: TROUBLE
SHOOTING
GUIDE
Trouble

Possible

Engine fails to
start

Fuel tank empty, or stale fuel.

Engine runs
erratic

Engine overheats

Tines do not
engage

Tines skip over
ground
Wheels do not
engage

Cause(s)

Throttle control lever not in correct
starting position (if so equipped).
Blocked fuel line.
Dirty aircleaner.
Choke not in ON position.
Spark plug wire disconnected.
Faulty spark plug.
Engine flooded.
Unit running on CHOKE.
Spark plug wire loose.
Blocked fuel line or stale fuel.
Vent in gas cap plugged.
Water or dirt in fuel system.
Dirty air cleaner.
Carburetor out of adjustment.
Engine oil level tow.
Dirty air cleaner.
Air flow restricted.
Carburetor not adjusted properly.
Foreign object lodged in tines.
Tine clevis pin(s) missing.
Pulley and idler not in correct
adjustment.
Not shifting properly.
Control cable not adjusted properly.
Belt worn and/or stretched.
Improper rotation.
Clevis pin missing.
Tiller is not being shifted properly.
Control cable not adjusted properly.
Belt worn and/or stretched.

Corrective

Action

Fill tank with clean, fresh gasoline. Fuel wilt not last over
thirty days unless a fuel stabilizer is used.
Move throttle lever to start position.
Clean fuel line.
Refer to the engine manual packed with your unit.
Move switch to ON position.
Connect wire to spark plug.
Clean, adjust gap or replace.
Refer to the engine manual packed with your unit.
Move choke lever to OFF position.
Connect and tighten spark plug wire.
Clean fuel line; fill tank with clean, fresh gasoline. Fuel will
not last over thirty days unless a fuel stabilizer is used.
Clear vent.
Drain fuel tank. Refill with fresh fuel.
Refer to the engine manual packed with your unit.
Refer to the engine manual packed with your unit.
Fill crankcase with proper oil.
Refer to the engine manual packed with your unit.
Refer to the engine manual packed with your unit.
Adjust carburetor as instructed in separate engine manual.
Dislodge foreign object.
Replace tine clevis pin(s).
Take unit to authorized service dealer.
Refer to Controls section of operator's manual for proper
shifting procedures.
Adjust control cable (see assembly instructions).
Replace belt.
Forward rotation should only be used on soil that has
already been tilled, not on virgin soil.
Replace clevis pin.
Refer to Controls section of operator's manual for proper
shifting procedures.
Adjust control cable (see assembly instructions).
Replace belt.

NOTE: For repairs beyond the minor adjustments above, contact your local authorized service dealer.

NOTES

SECTION8: PARTSLISTFORMODEL454

13
6

16
/

134
I
I

[
I

I
I

Model454
Ref,
No.

Part No.

Ref.
No,

Part Description

Part No.

Part Description

611-0020

Wheel Shaft Ass'y 33T

28.

721-0378

1.0 Shaft Seal

611-0021

Tine Shaft Ass'y: 18T

29.

721-0379

.75 Shaft Seal

611-0128

Jack Shaft Ass'y

31.

726-0277

Tapered Cap Ring

4.
5.

611-0129
617-0058

Input Shaft Ass'y
Rev. Idler Gear Ass'y: 30T

32.
33.

732-0496
736-0163

Compression Spring.50" Lg.
Flat Wash. 1.03" I.D. x 1.62"

617-0059

Ftine Idler Gear Ass'y: 30T

34.

736-0351

Flat Wash.76" I.D. x 1.5" O.D.

617-0060

Tine Input Sprocket Ass'y: 9T

35.

736-0226

Flat Wash.474"

617-0061

Wheel Input Sprocket Ass'y: 10T

36.

736-0518

Thrust Wash.445 x 1.92 x.060

617-0062

Gear Ass'y: 11T

37.

736-3088

FI-Wash.635" I.D. x 1.59 O.D.

10.
11.

686-0108
710-0376

R.H. Chain Case Housing Ass'y
Hex Bolt 5/16-18 x 1" Lg.

40.
41.

738-0645
738-0648

Detent Shaft 1/2" Dia.
Jack Shaft.625 x 2.385

12.

710-0599

Hex S-Tap Scr. 1/4- 20 x.5

42.

738-1013

Jack Shaft.625 x 5.0

13.

710-0604A

43.

741-0124

Ball Bearing

14.

710-3008

Hex S-Tap Scr. 5/16-18 x.625"
Hex Bolt 5/16-18 x.75"

44.

741-0420

Flange Bearing 1.0 x 2.5 x 1.38

15.

711-1349

741-0421

Flange Bearing.75 x 2.5 x 1.38

16.
17.

712-0378
712-3004A

Input Shaft
Hex Nut 7/16-20

45.

741-0563
741-0862

Ball Bearing. 6692 x 5745 x.466
Detent Ball.250

18.

713-0367

Flange Nut 5/16-18
#420 Chain 1/2 Pitch x 50 Links

46.
47.
48.

750-0258

Spacer.315

19.

713-0484

#50 Chain 5/8 Pitch x 54 Links

49.

750-0570

Spacer 1.0 I.D x 2.00.D.x.440

20.

716-0865

Snap Ring

50.

750-0664

Spacer.505

21.

717-0853

Shifting Fork

51.

750-0671

Spacer.75 x 2.0 x.50

22.
23.

717-1582
717-1583

Spur Gear 44T

52.

786-0171

Spur Gear 30T

53.

786-0238

L.H. Chain Case Housing Ass'y
Gear Positioner Bracket

24.

717-1584

Spur Gear 30T

54.

736-0171

Lock Washer 7/16

25.

717-1585

Spur Gear 44T

55.

736-0407

Bell Washer.45"l.D. x 1.0"

26.

717-1587

Spur Gear 44T

686-0107

Gear Case Assembly Complete

27.

717-1594

Spur Gear 16T

I.D.x.879"

I.D.x.88 O.D.x.440

Model454

62
25

34
_

26
44

\
\

G
51
65

53
55

Model454
Ref,
No.

Part No.

Ref.
No,

Part Description

Part No.

Part Description

747-1152

Shift Rod

34.

750-0885A

649-0041

Upper Handle Ass'y

35.

786-0090

Spacer.322 x.625 x 2.0
Side Shield

649-0034

36.

786-0113

Rear Tine Shield

4.
5.

710-3005
710-3056

Lower Handle Ass'y
Hex Screw 3/8-16 x 1.25
Hex Screw 5/16-18 x 3.25

37.
38.

786-0176
786-0177

RH Handle Mounting Bracket

711-0415

Clevis Pin 3/8-1.62

39.

786-0178

LH Handle Mounting Bracket
Tine Shield

712-0379

40.

786-0179

Tine Shield Bracket

712-0429

Flange Lock Nut 3/8-24
Hex Lock Nut 5/16-18

41.

786-0180

Front Tine Shield Scraper Bracket

714-0147

Cotter Pin

42.

686-0109

10.
11.

720-0313
720-0210A

Grip
T-Knob

44.
46.

710-1017
715-0120

Shift Crank Ass'y
Screw 1/4-14 x.625

12.

720-0278A

49.

784-0208C

14.

726-0317

Foam Grip
Cable Tie

50.

784-0160

15.

735-0246

51.

712-3054

16.

736-0117

End Plug
Flat Washer 3/8 ID x.620 OD

53.

742-0305

17.
18.

736-0242
738-0958

Belt Washer.340 ID x.872 OD

54.
55.

738-0689
736-0208

19.

784-0190

736-0253

Belt Washer.515"

784-0191

Handle Adjustment Crank
Hex Nut Retainer Bracket

56.

20.

57.

738-0688

Shoulder Bolt

21.

786-0120

784-0205

747-1219

Depth Stake
Clutch Bail

58.

22.

59.

714-0149B

Tine Ass'y Complete
Internal Cotter Pin

23.
24.

786-0181
686-0044A

Shift Rod Lever

60.

735-0127

Rubber Washer

End Cover Ass'y

61.

714-0104

Cotter Pin

25.

710-0176

Hex Cap Screw 5/16-18 x 2.75

62.

710-3022

Hex Screw 3/8-16 x 2.75"

26.

710-3008

Hex Cap Screw 5/16-18 x.750

63.

736-0204

Flat Washer

27.

710-3097

Carriage Bolt 3/8-16 x 1.0

64.

712-0431

28.

712-0421

736-0169

Flange Nut.344 ID x.62 OD
Lock Washer

29.
30.

736-0169
712-3004A

Wing Nut
Lock Washer 3/8

65.
66.

712-0798

Hex Nut 3/8-16

Flange Nut 5/16-18

67.

710-0946

Truss Screw 1/4-20 x.65

31.

726-0106

712-0324

Hex Lock Nut 1/4-20

738-0849

Cap Nut
Hex Screw 5/16-18 x.75"

68.

32.

69.

726-0273

33.

747-0432

Rod

70.

736-3090

Battery Hose Clamp 5/16
Flat Washer.260 ID x.720 OD

Shoulder Spacer

Spiral Pin 3/16 x 1.0
Shift Cover
Tine Adapter Ass'y
Hex Nut 3/8-24
13" Articulating Tine
Shoulder Bolt
Flat Washer.51" ID x 1.50" OD
ID x 1.14" OD

Model454

44_

@
_®

/
15

1
10
11

_39

32_
37

-29

Model454
Ref,
No,

Part No.

Ref.
NO,

Part Description

Part No.

Part Description

686-0111

786-0064A

Idler Pulley Bracket

710-0237

Belt Cover Bracket Ass'y
Hex Bolt 5/16-24 x.62"

25.

26.

785-0186

710-0412

Hex Bolt 1/4-28 x.75"

27.

786-0187

Belt Keeper Bracket
Shift Cover Bracket

710-0502A

Hex Washer Screw 3/8-16 x 1.25"

28.

786-0193

Idler Belt Keeper

710-0152

Hex Bolt 3/8-24 x 1.0

29.

634-0238

Wheel Assembly RH 16 x 4 x 8

710-0599

Hex Washer Screw

634-0239

Wheel Assembly LH 16 x 4 x 8

710-0723

Tire Only 16.2 x 4.6

712-0266

Hex Cap Screw 3/8-16 x 1.25
Lock Jam Nut 3/8-16

734-0808
30.

634-0108

712-0267

Hex Nut 5/16-18

31.

734-0255

Wheel Rim Assembly
Air Valve

10.

714-0104

Internal Cotter Pin

32.

711-1017

Clevis Pin

11.

736-0104

Lock Washer 5/16

33.

710-0805

Hex Bolt 5/16-18 x 1.50

12.

736-0119

Lock Washer 5/16"

34.

710-0382

Hex Bolt 1/2-13 x 5.0

13.

736-0176

Flat Washer.25 ID x.93 OD

35.

712-0206

Hex Nut 1/2-13

14.

736-0271

36.

731-1595

15.

736-0329

Spring Washer.317 ID x.625 OD
Lock Washer 1/4" ID

37.

736-0179

Counterweight
Flat Washer.50

16.

736-0452

Belt Washer.396 ID x 1.14 OD

38.

736-0921

Lock Washer 1/2

17.

738-0876

Shoulder Nut 7/16-20

39.

710-0653

Hex Screw 1/4-20 x.375

18.

746-1117

Clutch Cable

40.

710-1017

Screw 1/4-14 x.625

19.

747-1159

Idler Pulley Rod

41.

712-0392

Lock Nut

20.

754-0434

V-Belt 4L x 58.16 Lg

42.

736-3020

Flat Washer.271

21.

756-0405

Flat Idler w/Flange 3.75 OD

43.

784-0158A

Belt Cover

22.

756-0971

Engine Inner Pulley Half

44.

736-0242

Bell Washer.340

23.

756-0972

Engine Outer Pulley Half

45.

712-3010

Hex Nut 5/16-18

24.

756-1162

Input Pulley

ID x 1.25 OD

ID x.630 OD
ID x.872 OD

NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color code, wherever needed,
to the part number to order a replacement part. For instance, if a part numbered 700-xxxx is painted Oyster Gray, the patti
number to order would be 700-xxxx-0662.
Black -- 0691; Black, Powder0637; Blue, Midnight -- 0667; Charcoal -- 0483; Grey -- 0648;
Grey, Oyster -- 0662; Orange -- 0606; Red -- 0650; Red, MTD -- 0638; Silver -- 0629; Yellow -- 0674.

MANUFACTURER'S

LIMITED WARRANTY

FOR:

RYOBIo
The limited warranty set forth below is given by MTD LLC with
respect to new merchandise purchased and used in the
United States, its possessions and territories.
"MTD" warrants this product against defects in material and
workmanship for a period of two (2) years commencing on the
date of original purchase and wilt, at its option, repair or
replace, free of charge, any part found to be defective in
materials or workmanship. This limited warranty shall only
apply if this product has been operated and maintained in
accordance with the Operator's Manual furnished with the
product, and has not been subject to misuse, abuse,
commercial use, neglect, accident, improper maintenance,
alteration, vandalism, theft, fire, water, or damage because of
other peril or natural disaster. Damage resulting from the
installation or use of any part, accessory or attachment not
approved by MTD for use with the product(s) covered by this
manual will void your warranty as to any resulting damage.
Normal wear parts are warranted to be free from defects in
material and workmanship for a period of thirty (30) days from
the date of purchase. Normal wear parts include, but not
limited to items such as: batteries, belts, blades, blade
adapters, grass bags, rider deck wheels, seats, snow thrower
skid shoes, shave plates, auger spiral rubber and tires.
HOW TO OBTAIN SERVICE: Warranty service is available,
WITH PROOF OF PURCHASE, through your local authorized
service dealer. To locate the dealer in your area, check your
Yellow Pages, or contact MTD LLC at P.O. Box 361131,
Cleveland, Ohio 44136-0019, or call 1-800-345-TRIM (8746)
or 1-330-558-7210 or log on to our Web site at
www.ryobioutdoor.com.
This limited warranty does not provide coverage in the
following cases:
a,

The engine or component parts thereof. These items
may carry a separate manufacturer's warranty. Refer
to applicable manufacturer's warranty for terms and
conditions.
Log splitter pumps, valves, and cylinders have a
separate one year warranty.
Routine maintenance items such as lubricants, filters,
blade sharpening, tune-ups, brake adjustments, clutch
adjustments, deck adjustments, and normal
deterioration of the exterior finish due to use or

MTD does not extend any warranty for products sold or
exported outside of the United States, its possessions
and territories, except those sold through MTD's
authorized channels of export distribution.
Replacement parts that are not genuine MTD parts.
Transportation charges and service calls.

No implied warranty, including any implied warranty of
merchantability of fitness for a particular purpose,
applies after the applicable period of express written
warranty above as to the parts as identified. No other
express warranty, whether written or oral, except as
mentioned above, given by any person or entity,
including a dealer or retailer, with respect to any product,
shall bind MTD. During the period of the warranty, the
exclusive remedy is repair or replacement of the product
as set forth above.
The provisions as set forth in this warranty provide the
sole and exclusive remedy arising from the sale. MTD
shall not be liable for incidental or consequential loss or
damage including, without limitation, expenses incurred
for substitute or replacement lawn care services or for
rental expenses to temporarily replace a warranted
product.
Some states do not allow the exclusion or limitation of
incidental or consequential damages, or limitations on how
long an implied warranty lasts, so the above exclusions or
limitations may not apply to you.
In no event shall recovery of any kind be greater than the
amount of the purchase price of the product sold. Alteration
of safety features of the product shall void this warranty.
You assume the risk and liability for toss, damage, or injury to
you and your property and/or to others and their property
arising out of the misuse or inability to use the product.
This limited warranty shall not extend to anyone other than the
original purchaser or to the person for whom it was purchased
as a gift.
HOW STATE LAW RELATES TO THIS WARRANTY: This
limited warranty gives you specific legal rights, and you may
also have other rights which vary from state to state.

IMPORTANT: Owner must present Original Proof of
Purchase to obtain warranty coverage.

exposure.
Service completed by someone other than an
authorized service dealer.

MTD LLC, P.O. BOX361131CLEVELAND,OHIO44136-0019; Phone:1-800-345-TRIM (8746), 1-330-558-7210

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.2
Linearized                      : No
Page Count                      : 20
Page Layout                     : SinglePage
Page Mode                       : UseNone
Producer                        : Goby Monitor Application version 3, 2, 1, 4
Create Date                     : Sat Mar 29 02:12:21 2014
Author                          : 
Title                           : 
Subject                         :

EXIF Metadata provided by EXIF.tools

Ryobi 21AB454B734 User Manual REAR TILLER Manuals And Guides 1109429L

454 1109429L

Navigation menu

Versions of this User Manual:

Views

Navigation