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ZT2450A
ZT2450A
24 HP – 50” CUT

CELEBRATING OVER 60 YEARS OF INNOVATION
1945 - 2008
1602 CORPORATE DRIVE, P.O. BOX 67, WARRENSBURG, MISSOURI 64093
PHONE 660-747-8183 FAX 660-747-8650

Made In The

Manufacturing quality lawn care equipment since 1945

USA

OWNER’S
MANUAL
STARTING SERIAL # TN107-351001
12890

Rev. 08-221

LIMITED WARRANTY
The manufacturer’s warranty to the original consumer purchaser is: This product is free
from defects in materials and workmanship for a period of two (2) years from the date of
purchase by the original consumer purchaser. We will repair or replace, at our discretion,
parts found to be defective due to materials or workmanship. This warranty is subject to
the following limitations and exclusions:
1) Engine Warranty

All engines utilized on our products have a separate warranty
extended to them by the individual engine manufacturer. Any
engine service difficulty is the responsibility of the engine
manufacturer and in no way is Swisher Mower Co., Inc. or its
agents responsible for the engine warranty. The Briggs &
Stratton Engine Service Hot-Line is 1-800-233-3723. The
Tecumseh Engine Service Hot-Line is 1-800-558-5402.

2) Limitation

This warranty applies only to products which have been
properly assembled, adjusted, and operated in accordance
with the instructions contained within this manual. This
warranty does not apply to any product of Swisher Mower
Co., Inc., that has been subject to alteration, misuse,abuse,
improper assembly or installation, shipping damage, or to
normal wear of the product.

3) Exclusions

Excluded from this warranty are normal wear, normal
adjustments, normal maintenance, and batteries*(see
battery section.)

In the event you have a claim under this warranty, you must return the product to an
authorized service dealer. All transportation charges, damage, or loss incurred during
transportation of parts submitted for replacement or repair under this warranty shall be
borne by the purchaser. Should you have any questions concerning this warranty, please
contact us toll-free at 1-800-222-8183. The model number, serial number, date of
purchase, and the name of the authorized Swisher dealer from whom you purchased the
mower will be needed before any warranty claim can be processed.
THIS WARRANTY DOES NOT APPLY TO ANY INCIDENTAL OR CONSEQUENTIAL
DAMAGES AND ANY IMPLIED WARRANTIES ARE LIMITED TO THE SAME TIME
PERIODS STATED HEREIN FOR ALL EXPRESSED WARRANTIES. Some states do not
allow the limitation of consequential damages or limitations on how long an implied
warranty may last, so the above limitations or exclusions may not apply to you. This
warranty gives you specific legal rights and you may have other rights, which vary from
state-to-state. This is a limited warranty as defined by the Magnuson-Moss Act of 1975.
2

CONTENTS
2
LIMITED WARRANTY…………

OPERATION………………..… 14

INTRODUCTION………………4

Features……………………… 14

General…………………………4

Starting…………………………17

Before Operating………………4

Grass Height of Cut……………17

Uncrating & Assembly…………5

Controls………...……..……… 18

SYMBOLS & DECALS………6

SERVICE & ADJUSTMENTS 19

SAFETY INSTRUCTIONS……7

Adjusting Deck Height…………
19

General use and safety rules…7

Deck Level…………………… 19

Children Safety…………….

8

Parking Brakes………………. 19

Slope Operation…………….. 8

Deck Belt Replacement………20

CUSTOMER
RESPONSIBILITY…………… 10

Hydro Belt Replacement…….. 21
Seat Adjustment………………22

Operator Presence……………10

WIRING SCHEMATIC…………23
Tires……………………………10

PARTS BREAKDOWN……… 24
Blade Maintenance……………10

TROUBLESHOOTING……… 34
Battery…………………………10-11

MOWER IDENTIFICATION… 36
V-belts…………………………12

REPLACEMENT PARTS…… 37
Engine…………………………12

WARRANTY RIGHTS…………38
12
Overall Unit Care………….……

SWISHER HISTORY………… 40
Transporting Safety……………12

SPECIFICATIONS…………… 12
Maintenance……….………… 13

3

INTRODUCTION
Congratulations
Thank you for purchasing a Swisher Zero Turn mower. This machine is built for the
greatest efficiency and rapid mowing of large areas. Conveniently located controls and
dual commercial grade hydrostatic transmissions regulated by steering levers, contribute to
the machine’s performance.
This manual is a valuable document. Following the instructions for use, service,
maintenance, etc. can greatly increase the life-span of your machine .

General
In this operator’s manual, left and right, backward and forward are used in relation to the
normal operators position.

NOTE:
Read Before Operating

If you have never used a Zero Turn mower before, refer
to the Operation Controls section of this manual before
attempting to operate one for the first time.

This machine is constructed only for mowing grass on lawns and other free and even
ground without obstacles. This machine is not intended for commercial use. The
manufacturer’s directions concerning operation, maintenance, and repairs must be
carefully followed.
This machine must only be operated, maintained, and repaired by persons that are
familiar with the machine’s special characteristics and who are well versed in safety
instructions.
Accident prevention regulations, other general safety regulations, occupational safety
rules, and traffic regulations must be followed without fail.
Unauthorized modifications to the design of the machine may absolve the manufacturer
from liability for any resulting personal injury or property damage.
¾ Read engine manufacturer’s
operating and maintenance
instructions.

¾ Know how to set the parking brake.
¾ Be sure mower blades are turned off –
PTO switch pushed down.

¾ Read and observe all safety
instructions on your mower and in the
manual.

¾ Know how to stop the engine – Turn key
to off

¾ Check engine oil.

¾ Know how to stop the unit – Return
control handles to neutral

¾ Check fuel caps to sure that they
are in place.
4

INTRODUCTION
Uncrating & Assembly
TOOLS REQUIRED:
9 2 - ½” Wrenches or ½” Socket with drive ratchet
9 Tire pressure gauge
9 Nail bar or claw hammer
9 Wire snips

To Remove The Mower From The Crate:
¾ Dispose of top and side panels of the crate.
¾ Remove loose parts and packing material.
¾ Cut any banding or strapping that may be holding the mower to the crate.
¾ Disengage spark plug wire and place where it cannot make a connection.
¾ Raise the mower deck to its highest position.
¾ Install steering levers. Remove the bolts from the control arms on the mower. Align
the holes in the lever with the holes in the control arms and attach with the bolts provided.
Make sure both bolts on both handles are tight.
¾ Disengage the parking brake by pushing the handles to their fully extended position.
¾ Open the transmission valves at the rear of the unit by pulling the release rods and
locking them in place. SEE INSTRUCTION DECAL AT THE REAR OF THE UNIT.
¾ Carefully push the mower off the crate to a safe and level area.
¾ Check engine oil. All engines are filled with oil and tested at the factory. Verify oil
level and add if necessary before starting engine. SEE ENGINE OWNER’S MANUAL
¾ Check the battery. If the battery is put into service after the “month & year” of the
date on the battery, then it may need to be charged with a 12 volt charger for a minimum
of 1 hour, but no more than 2 hours at a rate of 6 to 10 amps.
¾ Attach battery cables to battery. Always attach the positive terminal first.
¾ Close the transmission valves at the rear of the unit. SEE INSTRUCTION DECAL
AT THE REAR OF THE UNIT.
¾ Reconnect spark plug wire.
¾ Check tire pressure on all four wheels. REFER TO UNIT SPECIFICATIONS TABLE
5

SYMBOLS & DECALS

OD45- Warning Decal

Swisher Flag U.S.A.– OD39

Notice Do Not Alter Wiring Decal– OD74

Flying Debris Decal – OD43

Operator Must Be Seated Decal– OD73

No Step Decal – OD11

Triangle Danger Decal – OD55

Key/PTO Decal - 10273

Hydro Release 10280

Throttle/Choke Decal - 10271

Danger/Warning Decal - 10276
6

SAFETY INSTRUCTIONS
These instructions are for your safety. Read them carefully.
This Safety Alert Symbol indicates important messages in this manual. When
you see this symbol, carefully read the message that follows and be alert to the
possibility of personal injury.

General Use
¾ Read all instructions in this operator’s manual and on the
machine before starting it. Ensure that you understand them and
then abide by them.
¾Learn how to use the machine and its controls safely and learn
how to stop quickly. Also learn to recognize the safety decals.
¾ Only allow the machine to be used by adults who are familiar
with its use.
¾ Make sure nobody else is in the area of the machine when you
start the engine, engage the drive, or run the machine.
¾Stop the machine if someone enters the work area.
¾Clear the area of objects such as stones, toys, steel wire, etc.
that may become caught in the blades and thrown out.

¾Do Not Use this machine without the Discharge
Chute in place.
¾ Stop the engine and disconnect the spark plug before cleaning
the discharge deck.
¾ Never take passengers. The machine is only intended for use
by one person.
¾ Always look around before and during reversing maneuvers.
¾ Slow down before turning.
¾ Shut down the mower deck when not mowing.
¾ Be careful when rounding fixed objects, so that the blades do
not hit them.
¾ Only operate the machine in daylight or other well-lit
conditions.
¾ Keep the machine a safe distance from holes or other
irregularities in the ground.
¾ Never use the machine if you are tired, if you have consumed
alcohol, or if you are taking other drugs or medications that can
affect your vision, judgment, or coordination.
¾ Beware of traffic when working near or crossing a road.
¾ Never leave the machine unsupervised with the engine running.
Always shut down the blades, engage the parking brake, stop the
engine, and remove the ignition key before leaving the machine.
¾ Never allow children or other persons not trained in the use of
the machine to use or service it. Local laws may regulate the age
of the user.
¾ Make sure that you have first aid equipment close at hand
when using the machine.
¾ Never use the machine when barefoot. Always wear protective
shoes or boots.

7

NOTE:
If you have never used a Zero Turn
mower before, refer to the Operation
Controls section of this manual before
attempting to operate one for the first
time.

SAFETY INSTRUCTIONS
General Use Continued…
¾ Always wear approved protective glasses or a full visor when
assembling or driving.
¾ Ear Protection is recommended

Remember

¾ Never wear loose clothing that can get caught in moving parts.

Children

The operator is responsible for
avoiding dangers or accidents.

¾ Serious accidents may occur if you fail to be on guard for children in
the area of the machine. Children are often attracted to the machine and
mowing work. Never assume that children will stay put where you last saw
them.
¾ Keep children away from the mowing area and under close supervision
by another adult.
¾ Shut off the machine if children enter the work area.
¾ Never allow a child to ride with you.
¾ Never allow children to operate the machine.
¾ Be extra cautious near corners, bushes, trees, or other objects that
block your view.

WARNING
When using the machine,
approved personal
protective equipment shall
be used. Personal
protective equipment
cannot eliminate the risk of
injury, but it will reduce the
degree of injury if an
accident does occur. Ask
your retailer for help in
choosing the right
equipment.

Slope Operation
¾ Remove obstacles such as stones, tree branches, etc.
¾ Mow up and down, not side to side. Never drive the rider on terrain
that slopes more than 10 degrees.
¾ Avoid starting or stopping on a slope. If the tires begin to slip, shut
down the blades and drive slowly down the slope.
¾ Always drive evenly and slowly on slopes.

Remember

¾ Make no sudden changes in speed or direction.

The operator is responsible
for avoiding dangers or
accidents.

¾ Avoid unnecessary turns on slopes, and if it proves necessary, turn
slowly and gradually downward, if possible.
¾ Watch for holes, ruts, or bumps. On uneven terrain, the machine can
tip more easily. Long grass can hide obstacles.
¾ Drive slowly and use small movements of the steering controls.
¾ Do not mow wet grass. It is slippery, and the tires can loose their grip,
so that the machine slides.
¾ Do not try to stabilize the machine by putting a foot on the ground.

8

MOWING SAFETY
•WARNING – Petrol is highly flammable.
- store fuel in containers specifically designed for this purpose;
- refuel outdoors only and do not smoke while refueling;
- add fuel before starting the engine. Never remove the cap of the fuel tank or add petrol while the engine
is running or when the engine is hot.
- if petrol is spilled, do not attempt to start the engine but move the machine away from the area of spillage and
avoid creating any source of ignition until petrol vapors have dissipated;
- replace all fuel tanks and container caps securely.
• Replace faulty silencers;
• before using, always visually inspect to see that the blades, blade bolts and cutter assembly are not worn
or damaged. Replace worn or damaged blades and bolts in sets to preserve balance;
• on multi-bladed machines, take care as rotating one blade can cause other blades to rotate.
MAINTENANCE AND STORAGE
• Keep all nuts, bolts and screws tight to be sure the equipment is in safe working condition;
• never store the equipment with petrol in the tank inside a building where fumes can reach an open flame or
spark;
• allow the engine to cool before storing in any enclosure;
• to reduce the fire hazard, keep the engine, silencer, battery compartment and petrol storage area free of grass,
leaves, or excessive grease;
• check the grass catcher frequently for wear or deterioration;
• replace worn or damaged parts for safety;
• if the fuel tank has to be drained, this should be done outdoors.
• when machine is to be parked, stored or left unattended, lower the cutting means unless a positive mechanical
lock is used.
TRAINING
All drivers should seek and obtain professional and practical instruction. Such instruction should emphasize:
• the need for care and concentration when working with ride-on machines;
• control of a ride-on machine sliding on a slope will not be regained by the application of the brake. The main
reason for loss of control are:
i) insufficient wheel grip;
ii) being driven too fast;
iii) inadequate braking;
iv) the type of machine is unsuitable for its task;
v) lack of awareness of the effect of ground conditions, especially slopes;
vi) incorrect hitching and load distribution.
OPERATION
• Do not operate the engine in a confined space where dangerous carbon monoxide fumes can collect;
• when using any attachments, never direct discharge of material toward bystanders nor allow anyone
near the machine while in operation;
• never operate the machine with defective guards, or without safety protective devices in place;
• do not change the engine governor settings or over speed the engine. Operating the engine at excessive
speed can increase the hazard of personal injury;
• disengage drive to attachments, stop the engine, and disconnect the spark plug wire(s) or remove the
ignition key:
- before clearing blockages or unclogging chute;
- before checking, clearing or working on the machine;
- after striking a foreign object. Inspect the machine for damage and make repairs before restarting and
operating the equipment;
- if the machine starts to vibrate abnormally (check immediately);
• stop the engine and disengage drive to attachment:
- before refueling;
- before removing the grass catcher;
- before making height adjustment unless adjustment can be made from the operator’s position

9

CUSTOMER RESPONSIBILITIES
Operator Presence System
Be sure the operator presence and interlock systems are working properly. If your mower does not function as
described, repair the problem immediately.
¾ The engine should not start unless the parking brake is engaged and the PTO (Blade Engagement
– See OPERATION FEATURES section of this manual) switch is disengaged (pressed down).
¾ When the engine is running, the operator should never leave the seat without first setting the parking
brake and shutting off the engine.
¾ When the engine is running and the PTO switch is engaged, any attempt by the operator to leave
the seat without first disengaging the PTO switch, should shut off the engine.
¾ When the engine is running and the control levers are rotated in, the operator should never attempt
to leave the seat without rotating the control levers out, shutting off the engine and engaging the
parking brake.
¾The PTO switch should never engage without the operator on the seat.

Tires
¾ Maintain proper air pressure in all tires ( SEE SPECIFICATIONS section)
¾ Keep tires free of gasoline, oil, or insect control chemicals which can harm rubber.
¾ Avoid stumps, stones, deep ruts, sharp objects and other hazards that may cause tire damage.

Blade Maintenance

CAUTION
Stop engine and remove ignition key for safety. Disconnect spark plug wire. Wear heavy, thick gloves when
holding onto blade. Avoid the sharp edge of the blade.
For best results, mower blades must be kept sharp. Replace bent or damage blades.
¾ Safely raise front of mower. SEE WARNING
¾ Hold or block blade from turning.

WARNING
When it is necessary to raise the mower for
any repair or service, use jackstands to
provide adequate support. DO NOT rely on
hydraulic or mechanical jacks

¾ Loosen blade nut and remove blade.
¾ Replace blade, (SEE SPECIFICATIONS).

Battery
To clean battery and terminals
¾ Remove terminal guard.
¾Disconnect the BLACK battery cable first, then the RED battery cable and remove the battery.
¾ Rinse the battery with plain water and dry.
¾ Clean terminals and battery cable ends with wire brush until shiny.

WARNING
The battery contains sulfuric acid and
electrolytes which are poisonous and
corrosive.

¾ Coat terminals with grease or petroleum jelly
¾ Reinstall battery

¾ Reconnect the battery cables

10

CHARGING TIPS
•To avoid a battery explosion, never attempt to charge a frozen
battery.
•Warning: Gel and AGM (Absorbed Glass Mat) batteries require a
voltage-limited charger. Charging a Gel or AGM battery on a typical
shop charger, even one time, may greatly shorten its life.
•Important: Never overcharge batteries. Excessive charging will
shorten battery life.
•Prior to charging, read the manufacturer’s instructions for proper
charger hook-up and use.
•Turn off charger prior to hook-up to avoid dangerous sparks.
PROTECT YOUR EYES!
•Warning: If the electrolyte is accessible, verify that plates are
covered before beginning to charge. At the end of charge, add
distilled water as needed to bring levels to the proper height. If
water is added, charge for an additional 30 minutes to mix. If
electrolyte levels are low but battery is not accessible, remove
battery from service.
•The maximum charge rate in amperes should be no more than 1/3
of the battery’s reserve capacity minute rating. If the terminal
voltage exceeds 16.0 volts while charging, reduce the charge rate.
•Continue charging and reduce the rate as needed until a 2 hour
period results in no increase in voltage or decrease in current.
•If violent gassing or spewing of electrolyte occurs, or the battery
case feels hot to the touch, temporarily reduce or halt charging.

VOLTAGE
STANDARD
BATTERY
6V

12 V

6.3
6.2
6.1
6
5.9

12.6
12.4
12.2
12
11.8

STATE
OF
CHARGE

APPROX. BATTERY CHARGING TIME *
TO FULL CHARGE AT 80oF/27oC
MAXIMUM RATE AT
50 AMPS 30 AMPS 20 AMPS 10 AMPS

100%
75%
50%
25%
0%

20 MIN.
45 MIN.
65 MIN.
85 MIN,

FULL CHARGE
35 MIN. 48 MIN. 90 MIN.
75 MIN. 95 MIN. 180 MIN.
115 MIN. 145 MIN. 280 MIN.
150 MIN. 195 MIN. 370 MIN.

* Test wet batteries every 4-6 months and recharge if necessary.
Always test and charge if necessary before installation.

11

CUSTOMER RESPONSIBILITIES/SPECIFICATIONS
V-Belts
Check V-belts for deterioration and wear after 100 hours of operation and replace if necessary. Replace belts if
they begin to slip from wear. SEE SPECIFICATION for belt part numbers and SERVICE section of this manual for
instructions on how to replace the belt.

Engine
REFER TO YOUR ENGINE OWNERS MANUAL

Overall Unit Care
¾ Reduce the risk of fire by removing grass, leaves, and other debris that may have accumulated on the
machine. Allow the machine time to cool before cleaning or putting it in storage.
¾Wash mower periodically. Clean above and below deck.
¾Keep all electrical connections clean and tight.

Driving and Transport on Public Roads
¾Check applicable road traffic regulations before driving and transporting on public roads.
¾If the machine is transported, you should always use approved fastening equipment and ensure that the
machine is well anchored.
¾The cutting deck should also be lowered to the lowest position and the parking brake engaged.

SPECIFICATIONS
GASOLINE CAPACITY
AND TYPE

DUAL 2.0 GAL TANKS
UNLEADED REGULAR

OIL TYPE (SPI-SF-SJ):

SEE ENGINE MANUAL

SPARK PLUG

SEE ENGINE MANUAL

GROUND SPEED

0 – 6 mph

TIRE SIZE

FRONT: 4.10x3.5-5 5/8 Bearing
REAR: 18 X 9.5 X 8

TIRE PRESSURE

FRONT: 50 psi Max
REAR: 22 psi Max

BATTERY

12V / Heavy Duty 275 CCA
Type U1L

HYDRO Bolt Torque

27 + - 3 ft. lbs

BLADE BOLT TORQUE

35 ft. lbs

CUTTING HEIGHT

1.5” – 5”

CUTTING WIDTH

50” – 3 Mulching Blade System

PARKING BRAKE

Spring Assisted

FRONT AXLE

Pivoting

SEAT

15” Back w/ Arm Rest
6” Adjustable Slide

TRANSMISSION

Commercial Grade Eaton Hydrostatic

DECK LIFT

Spring Assisted

UNIT MEASUREMENTS

LENGTH:
WIDTH:
Including Deck
WEIGHT:

12

70”
50 ¼” “
600 lbs

CUSTOMER RESPONSIBILITIES
MAINTENANCE SCHEDULE
Before
Each 8 Hours 25 Hours
Use
Check Brake
Operation

X

X

Check Tire
Pressure

X

X

Check Operator
Presence

X

Parking Brake

X

Check for Loose
Fasteners

X

50 Hours

100 Hours

Season

X

Before
Storage

X

Sharpen/Replace
Mower Blades

X3

Check Battery

X

X

Clean Battery &
Terminals

X

X

Check Belts
Check Engine Oil

X
X

X

Change Engine Oil
w/ filter
Change Engine Oil
w/o filter

X1,2
X1,2

Replace Oil Filter

Clean Air Filter

X1,2
X2

Inspect Muffler

X

Clean Engine
Cooling Fins

X2

Replace Spark Plug

X

Replace Fuel Filter

X
X

1 – Change more often when operating under a heavy load or in high ambient temperatures
2 – Service more often when operating in dirty or dusty conditions
3 – Replace blades more often when mowing in sandy soil

13

OPERATION
FEATURES
9

7

10

6
1.

Throttle Control – Used to control
Engine Speed

2.

Hour Meter – Indicates hours of
operation

3.

Choke Control – Used when starting
a cold engine

4.

PTO Switch – Used to engage or
disengage the deck blades

5.
6.

Ignition Switch – Used to start or
stop the engine
Deck Lift Handle – Used to raise and
lower the cutting deck

12
7.

Control Levers – Sets the speed of the
mower in both the forward and reverse
directions and also turns the mower.

8.

Hydro Bypass – Engages transmissions for
normal operation and disengages
transmissions for pushing or pulling the unit

9.

Fuel Tanks – Dual 2.0 gal fuel tanks

10.

Seat Slide

11.

Battery

12.

Pivoting Front Axle

13.

Discharge Chute

SEE DETAILS PAGE
14

OPERATION
FEATURES

9
7

13
1.

Throttle Control – Used to control
Engine Speed

2.

Hour Meter – Indicates hours of
operation

3.

Choke Control – Used when starting
a cold engine

4.

PTO Switch – Used to engage or
disengage the deck blades

5.
6.

Ignition Switch – Used to start or
stop the engine
Deck Lift Handle – Used to raise and
lower the cutting deck

7.

Control Levers – Sets the speed of the
mower in both the forward and reverse
directions and also turns the mower.

8.

Hydro Bypass – Engages transmissions for
normal operation and disengages
transmissions for pushing or pulling the unit

9.

Fuel Tanks – Dual 2.0 gal fuel tanks

10.

Seat Slide

11.

Battery

12.

Pivoting Front Axle

13.

Discharge Chute

SEE DETAILS PAGE
15

OPERATION
FEATURES
Left Control Panel

Right Control Panel

6

3
1

4

2

5

11

8
Rear of Unit

1.

Throttle Control – Used to control
Engine Speed

2.

Hour Meter – Indicates hours of
operation

3.

Choke Control – Used when starting
a cold engine

4.

PTO Switch – Used to engage or
disengage the deck blades

5.

Ignition Switch – Used to start or
stop the engine

6.

Deck Lift Handle – Used to raise and
lower the cutting deck

16

7.

Control Levers – Sets the speed of the
mower in both the forward and reverse
directions and also turns the mower.

8.

Hydro Bypass – Engages transmissions for
normal operation and disengages
transmissions for pushing or pulling the unit

9.

Fuel Tanks – Dual 2.0 gal fuel tanks

10.

Seat Slide

11.

Battery

12.

Pivoting Front Axle

13.

Discharge Chute

OPERATION
Starting
¾ Operator must be sitting in the seat. Control handles must be in the neutral
(outward) position. PTO must be in the disengage position (pushed down).

¾ Set choke (if needed), turn key and release as soon as engine starts. Adjust
throttle to half and shut choke off.

¾ Be sure all people are clear of the area. Engage blades and set RPM to
maximum.

NOTE:

Grass Height & Cutting Suggestions

If you have never used a Zero
Turn mower before, refer to the
Operation Controls section of
this manual before attempting
to operate one for the first time.

¾ Do not attempt to cut wet grass

¾ The average lawn should be cut to 2 ½” during the cool season and to over 3”
during the hot months. For healthier and better looking lawns, mow often and after
moderate growth.

¾ As a rule , never cut more than 1/3 of the total grass blade length. Correct
mowing height can reduce weeds and lawn disease.

¾ For best performance, grass over 6 inches in height should be mowed twice.
The first cut should be set relatively high and the second set to the desired height.

17

OPERATION
Controls
¾ Be familiar with all controls, their functions and how to operate them before
starting the machine.

¾Motion control levers on each side of the console control the direction of
movement. SEE FIGURE BELOW
Control Handles

Neutral Position

90 Degree Right Turn

Slow Forward

Fast Forward

90 Degree Left Turn

Slow Reverse

NOTE:

360 Degree Right Turn

360 Degree Left Turn

If you have never used a Zero
Turn mower before, refer to the
Operation Controls section of
this manual before attempting
to operate one for the first time.

Note: The pressure required to operate the mower is very slight

18

SERVICE & ADJUSTMENTS
Adjusting The Cutting Height
¾ Push out on the Deck Lift Handle and raise or lower the deck to the desired position.
¾ Position 1 is the lowest setting and Position 8 is the highest position
¾ The cutting range is from approximately 1 ½” to approximately 5”

Deck Leveling
TOOLS REQUIRED:
9 2 - ½” Wrenches or ½” Socket with drive ratchet
¾ Lower the cutting deck down to the lowest position (position 1)
¾ Loosen the nuts on the top side of the deck hanger brackets (3 places) where the lift chains attach to.
¾ With all three loose on top of the brackets the deck should now set on the ground resting on the roller
wheels.
¾ Tighten the nuts on the top of the lift brackets making sure that all three lift chains are pulled tight.
¾ Lift deck using the deck lift handle to the desired position

Parking Brakes
9The Swisher ZT2450 is equipped with An Automatic Parking Brake system on each control handle.
9When the control handles are in the out most position the parking brakes are on.
9Adjustment for the system is located on the ends of the brake cable at the hydro pan & frame.
9Raise the rear wheel off the ground
9Disengage the hydro to be adjusted with the hydro release handle at the rear of the unit.
9Adjust so that the brake is not on when the handles are in the operator position. The wheel should
turn freely.
9The wheel should not turn when the handle is moved to the engaged or outward position.
9To tighten the brake, turn the adjustment nuts towards the end of the cable
9Recheck adjustment with control handle
9Lower unit back to the ground
9Reengage the hydro at the rear of the unit

WARNING
When it is necessary to raise the mower for any
repair or service, use jackstands to provide
adequate support. DO NOT rely on hydraulic or
mechanical jacks

19

SERVICE & ADJUSTMENTS
Deck Belt Routing &
Replacement
Replacement
9 Install new belt by placing it around
the deck pulleys. Refer to routing
diagram below.

Removal
9 Disconnect spark plug wire
9Apply parking brake
9 Lower the deck to its lowest position

9 The belt will be loose at this time

9 Remove the belt covers

9 Tightly secure the belt tension back
to its original position

9 Disconnect tension idler

9 Roll the belt over the top of the deck pulleys 9 Reinstall the belt covers
9 Reconnect spark plug wire

9 Remove belt

Front of Unit

For replacement belt part number refer to Replacement Parts
Quick Reference Chart in this manual

20

SERVICE & ADJUSTMENTS
Hydro Belt Routing & Replacement

9 Disconnect wiring from electric clutch

Replacement
9 Install new belt by placing it around
the engine pulley and the hydro
pulleys. Refer to routing diagram
below.

9 Remove clutch stop weldment (9973TK)

9 The belt will be loose at this time

9 Remove the engine to deck belt

9 Tightly secure the belt tension back
to its original position

Removal
9 Disconnect spark plug wire
9 Apply parking brake

9 Disconnect idler spring

9 Reinstall the belt from the engine to
the deck

9 Disconnect tension idler

9 Remove belt from the engine pulley and from
9 Reconnect wiring to the electric
the Hydro pulleys
clutch
9 Reconnect spark plug wire

Idler Pulley

Engine Pulley

For replacement belt part number refer to Replacement Parts
Quick Reference Chart in this manual

21

SERVICE & ADJUSTMENTS
Engine to Deck Belt
Removal
9 Apply parking brake
9 Lower the deck to its lowest position
9 Disconnect tension idler
9 Remove belt from the mower deck and the
electric clutch

Replacement
9 Install new belt by placing it around
the electric clutch and route it through
the idler and around the deck pulley.
Refer to routing diagram below.
9 The belt will be loose at this time
9 Tightly secure the belt tension back
to its original position

Seat Adjustment
9 The Swisher ZT2450A is equipped with a 6” range sliding
seat.
9 Release the tension on the seat adjustment lever by pushing
the yellow tip lever to the left. See features section in this
manual
9 Using your own weight, slide the seat to the desired position
9 Release the lever

Travel Reduction Adjustment (Ref. Page 29)
9 To improve the tracking of the Swisher ZT2450A the speed of one of the rear wheels needs
to be decreased. If the ZT2450A pulls to the right the left wheel will need to decrease speed
and if pulling to the left the right wheel will need to decrease speed.
9 To decrease the speed in one of the rear wheels turn the bolt (item 16) counter clockwise.
This will limit travel of the handle. Ensure after the bolt has been moved that the nuts holding
the bolt in place are securely tightened.

22

TROUBLESHOOTING
PROBLEM
Engine Will

CAUSE

CORRECTION

1.

Out of fuel

1.

2.

Engine not “choked” properly

2.

Choked engine and attempt to restart

3.

Engine flooded

3.

Wait several minutes before attempting to
restart.

4.

Bad spark plug

Not Start

Engine Hard
To Start

5.

Dirty air filter

6.

Dirty fuel filter

Not Turn Over

Engine Clicks
but Will Not
Start

Unit Does not
Travel in a
straight line
Excessive
Vibration

4.

Replace spark plug

5.

Clean or replace air filter

6.

Replace fuel filter

7.

Drain fuel tank & carburetor, refill tank with
fresh gas and replace fuel filter

7.

Water in fuel

8.

Loose or damaged wiring

8.

Check all wiring

9.

Carburetor out of adjustment

9.

See Engine Manual

10.

Engine valves out of adjustment

10.

Contact an authorized service center

11.

Extreme cold conditions

11.

See Engine Manual

12.

Fuel shut off valves closed

12.

Open

Bad spark plug

1.

Replace spark plug

2.

Dirty air filter

2.

Clean or replace air filter

3.

Dirty fuel filter

3.

Replace fuel filter

4.

Weak or dead battery

4.

Recharge or replace battery

5.

Carburetor out of adjustment

5.

See Engine Manual

6.

Engine valves out of adjustment

6.

Contact an authorized service center

7.

Loose or damaged wiring

7.

Check all wiring

Stale or dirty fuel

8.

Drain fuel tank & refill with fresh gasoline

1.

8.

Engine Will

Fill fuel tank

1.

Directional handles not in correct position

2.

PTO engaged

3.

Weak or dead battery

4.

Blown fuse

5.

Corroded battery terminals

6.

Loose or damaged wiring

7.

Faulty ignition switch

8.

Faulty solenoid

9.

Faulty operator presence switch/switches

1.

Place handles in the out most position

2.

Push PTO switch down

3.

Recharge or replace battery

4.

Replace fusel

5.

Clean battery terminals – See battery section
of this manual

6.

Check all wiring

7.

Check/replace ignition switch

8.

Check/replace solenoid

9.

Contact an authorized service center

1.

Weak or dead battery

1.

Recharge or replace battery

2.

Corroded battery terminals

2.

3.

Loose or damaged wiring

Clean battery terminals – See battery section
of this manual

4.

Faulty solenoid

3.

Check all wiring

4.

Check/replace solenoid

1.

Incorrect tire pressure

1.

Check tire pressure (See Specifications)

2.

Rear wheels rotating at different speeds.

2.

Adjust travel reduction weldment.

1.

Worn, bent or loose blade

1.

Replace blade. Tighten blade bolt.

2.

Bent blade driver

2.

Replace blade driver

3.

Tighten loose part or parts. Replace
damaged parts.

4.

Replace blade driver assembly

3.

Loose/damage part or parts

4.

Faulty blade driver assembly

34

TROUBLESHOOTING Continued
PROBLEM

CAUSE

CORRECTION

1.

Cutting too much grass/ too fast

1.

Set in High Cut (position 8)/reduce speed

Loss of

2.

“Choke” position

2.

Push choke control in

Power

3.

Buildup of grass, leaves and trash under
deck.

3.

Clean underside of mower deck

4.

Clean or replace air filter

4.

Dirty air filter

5.

Check oil level/change oil

5.

Low oil level/dirty oil

6.

Clean and re-gap or change plug

6.

Faulty spark plug

7.

Dirty fuel filter

8.

Stale or dirty fuel

9.

Water in fuel

10.

Engine
backfires when
turning engine
OFF
Poor cut uneven

Poor cut uneven

Battery will
not charge

Loss of drive

7.

Replace fuel filter

8.

Drain fuel tank & refill tank with fresh gas

9.

Drain fuel tank & carburetor, refill tank with
fresh gas and replace fuel filter

Spark plug wire loose

10.

Connect and tighten spark plug wire

11.

Dirty engine air screen/fins

11.

Clean engine air screen/fins

12.

Dirty/clogged muffler

12.

Clean/replace muffler

13.

Loose or damaged wiring

13.

Check all wiring

14.

Carburetor out of adjustment

14.

See Engine Manual

15.

Engine valves out of adjustment

15.

Contact an authorized service center

16.

Loose drive belt

16.

Adjust idler/replace belt

1.

Engine throttle control not set at “SLOW”
position for 30 seconds before stopping
engine.

1.

Move throttle control to “SLOW” position and
allow to idle for 30 seconds before stopping
engine

1.

Worn, bent or loose blade

1.

Replace blade. Tighten blade bolt

2.

Mower deck not level

2.

Level deck. See section in this manual

3.

Buildup of debris under deck.

3.

Clean underside of mower deck

4.

Bent deck

4.

Replace deck

5.

Faulty Blade driver assembly

5.

Replace blade driver assembly

1.

Worn, bent or loose blade

1.

Replace blade. Tighten blade bolt

2.

Mower deck not level

2.

Level deck. See section in this manual

3.

Buildup of grass, leaves and trash under
deck.

3.

Clean underside of mower deck

4.

Bent deck

5.

Faulty Blade driver assembly

1.

4.

Replace deck

5.

Replace blade driver assembly

Bad battery

1.

Replace battery

2.

Poor cable connections

2.

3.

Faulty solenoid

Check/clean all connections. See section in
this manual

3.

Replace solenoid

1.

Make sure that the bypass linkages are in
the drive or engaged position. Located at
the rear of the machine. Refer to decal on
the rear of the unit.

2.

Replace Hydro belt.

3.

Replace Idler spring

1.

Bypass linkages in the bypass position

2.

Hydro belt worn, damaged, or broken

3.

Idler spring loose or broken

35

Mower Identification

Unauthorized Replacement Parts

Each mower has its own model number. Each
engine has its own model number. The model
number for the mower will be found under the
seat. The model number for the engine will be
found on the top of the blower fan housing.
All mower parts listed herein may be ordered
directly from Swisher Mower & Machine Co.
Inc. or your nearest Swisher dealer.
All engine parts may be ordered from the
nearest dealer of the engine supplied with your
mower.

Use only Swisher replacement parts.
The replacement of any part on this
unit with anything other than Swisher
authorized replacement part may
adversely affect the performance,
durability and safety of this unit and
may void the warranty. Swisher
disclaims liability for any claims or
damages, whether warranty, property
damage, personal injury or death
arising out of the use of unauthorized
replacement parts.

WHEN ORDERING PARTS, PLEASE HAVE THE
FOLLOWING INORMATION AVAILABLE:
•Date Purchased ____________________
•Purchased From____________________
•PRODUCT – ZT2450A
•SERIAL NUMBER - _______________
•MODEL NUMBER - _______________
•ENGINE MODEL NUMBER - _______________
TYPE - _______________
•PART NUMBER WITH PAINT CODE__________________
*PART DESCRIPTION______________________________
SWISHER MOWER & MACHINE CO. INC.
1602 CORPORATE DRIVE
P.O. BOX 67
WARRENSBURG, MO 64093

Swisherinc.com
TELEPHONE - 1-800-222-8183
FAX - 1-660-747-8650

Cust.serv@swisherinc.com

36

Replacement Parts
Quick Reference
Swisher Part #

Part Description

12777

Deck Lift Linkage Assy

AS069

Fuse 10 Amp

6046

47” Hydro Belt

3604

Rear Tire/Wheel

12881

102” Deck Belt

3295

17.5” Mulching Blade

10263

83” Engine to Deck Belt

9018

Blade Driver Assembly
(outside)

9058

Blade Driver Assembly
(center)

CAUTION
Use extreme care when working on machinery.
Before performing any maintenance, turn off engine, allow the unit to cool & remove
the key. Disconnect spark plug wire.
Set Parking Brake by placing the control handles in the neutral or outward position.
Do not wear watch or jewelry. Do not wear loose fitting clothes. Observe all
common safety practices with tools.

37

WARRANTY RIGHTS AND OBLIGATIONS
YOUR WARRANTY RIGHTS AND OBLIGATIONS: The California Air Resources Board and Swisher Mower, is pleased
to explain the evaporative emission control system (EECS) on your model year 2006 and later Swisher Product. In
California, new Outdoor Power Equipment, must be designed, built and equipped to meet the State’s stringent anti-smog
standards. Swisher Mower must warrant the EECS on your Power Equipment, for the period of time listed below
provided there has been no abuse, neglect, or improper maintenance. For model year 2006 the EECS on your mower
includes the liquid fuel lines, fuel line connectors, and fuel line clamps. Where a warrantable condition exists, Swisher
Mower will repair at no cost to you. Expenses covered under warranty include diagnosis, parts, and labor.
MANUFACTURER’S WARRANTY COVERAGE: For a period of two years, any evaporative emission-related part
included in the list of EECS parts for your mower is defective, the part will be repaired or replaced by Swisher Mower.
OWNER’S WARRANTY RESPONSIBILITIES: As the owner of this Power Equipment, you are responsible for
performance of the required maintenance listed in your owner’s manual. Swisher Mower recommends that you retain all
receipts covering maintenance on your Power Equipment, but Swisher Mower cannot deny warranty solely for the lack of
receipts. As the Power Equipment owner, you should be aware that Swisher Mower, may deny you warranty coverage if
your Power Equipment, or a covered part has failed due to abuse, neglect, or improper maintenance, unapproved
modifications, or the use of parts not made or approved by the equipment manufacturer. You are responsible for
presenting your Power Equipment to an authorized Swisher Service center as soon as the problem exists. Warranty
repairs should be completed in a reasonable amount of time, not to exceed 30 days. If you have a question regarding
your warranty rights and responsibilities, you should contact the Swisher Mower Service representative at 1-800-2228183.
WARRANTY COMMENCEMENT DATE: The warranty period begins on the date the Power Equipment Is purchased.
LENGTH OF COVERAGE: This warranty shall be for a period of two (2) years from the initial date of purchase.
WHAT IS COVERED: Warranted parts include the Liquid fuel line, fuel line connectors, and fuel line clamps.
REPAIR OR REPLACEMENT OF PARTS: Repair or replacement of any evaporative warranted part will be performed
at no charge to the owner at an authorized Swisher Mower Service Center. If you have a question regarding your
warranty rights and responsibilities, you should contact your nearest authorized service center or call the Swisher Mower
Service representative at 1-800-222-8183.
WARRANTY PERIOD: Any warranted part is not scheduled for replacement as required maintenance, or which is
scheduled only for regular inspection to the effect of “repair or replace as necessary” shall be warranted for two (2)
years. Any warranted part that is scheduled for replacement as required maintenance shall be warranted for the period
of time up to the first scheduled replacement point for that part.
DIAGNOSIS: The owner shall not be charged for diagnostic labor that leads to the determination that a warranted part is
defective if the diagnostic work is performed at an authorized Swisher Service Center.
CONSEQUENTIAL DAMAGE: Swisher Mower, may be liable for damages to other engine or equipment components
caused by the failure of a warranted part still under warranty.
WHAT IS NOT COVERED: All failures caused by abuse, neglect, or improper maintenance is not covered.
ADD-ON OR MODIFIED PARTS: The use of add-on or modified parts may be grounds for disallowing a warranty claim.
Swisher Mower is not liable to cover failures of warranted parts caused by the use of an add-on or modified part.
HOW TO FILE A CLAIM: If you have a question regarding your warranty rights and responsibilities, you should contact
your nearest authorized service center or call Swisher Mower Service representative at 1-800-222-8183.

38

NOTES:
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________

39

SWISHER HISTORY
Back before electricity came to rural Missouri Max Swisher was producing lawn mowers
from his mother’s chicken house. Max never liked to mow grass. He installed a gearbox on
his family’s lawn mower creating a self-propelled unit. By tying one end of a rope to the
mower and the other end to a tree in the center of the yard the mower circled the tree,
shortening the rope and guiding the mower in concentric circles. Max enjoyed relaxing under
a shade tree while his invention did all the work.
Max had designed his first self-propelled rotary lawn mower to do his dirty work for him.
Neighbors noticed his new invention and began asking him to make more. Today, over 60
years later, Swisher Mower and Machine Company, Inc. is still producing innovative lawn
and garden and ATV/UTV equipment designed to give us all more “relaxing in the shade”
time.
Swisher products have been featured nationally on television programs such as Regis and
Kathie Lee and seen in publications like ATV Magazine, Country Journal, Popular Mechanics
Magazine and others. In January 2000 Popular Mechanics Magazine named Max’s zero
turning radius riding mower one of the 20th century’s top household inventions.
Swisher offers value and function in its products to meet your grounds maintenance needs.

CELEBRATING OVER 60 YEARS OF INNOVATION
1945 - Present

40



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