Allis-Chalmers YT9500 series User manual

Operator’s Manual
1756011
Revision A
YT9500 Series
Mfg. No. Description
2691146-00 Lawn Tractor and 52 in. (132,1 cm) Mower Deck
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Front Cover .................................................................................................................1
Operator Safety ..........................................................................................................4
Features and Controls .............................................................................................12
Operation ..................................................................................................................16
Safety Interlock System Tests.................................................................................16
Maintenance .............................................................................................................21
Troubleshooting.......................................................................................................32
...........................................................................................................34
Warranties.................................................................................................................35
Thank you for purchasing this quality-built ALLIS CHALMERS mower. We’re pleased that you’ve placed your
confidence in the ALLIS CHALMERS brand. When operated and maintained according to the instructions in this
manual, your ALLIS CHALMERS product will provide many years of dependable service.
This manual contains safety information to make you aware of the hazards and risks associated with mowers and
how to avoid them. This product and its approved attachments/accessories are designed and intended only for lawn
work or snow removal and are not intended for any other purpose. It is important that you read and understand these
instructions thoroughly before attempting to start or operate this equipment. Save these original instructions for
future reference.
Mower
Model Number _____________________________________
Serial Number _____________________________________
Engine
Model Type Trim _____________________________________
Date Code _____________________________________
Date Purchased _____________________________________
The Illustrated Parts List for this machine can be downloaded from www.allischalmerslawn.com. Please provide
model and serial number when ordering replacement parts.
Table of Contents
Copyright © 2012 All rights reserved. No part of this material may be reproduced
or transmitted in any form without the express written permission of
Briggs & Stratton Power Products Group, LLC.
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WARNING
Certain components in this product and its related
accessories contain chemicals known to the State of Cali-
fornia to cause cancer, birth defects, or other reproductive
harm.Wash hands after handling.
WARNING
Battery posts, terminals, and related accessories
contain lead and lead compounds - chemicals known to
the State of California to cause cancer, birth defects, or
other reproductive harm.Wash hands after handling.
WARNING
The engine exhaust from this product contains
chemicals known to the State of California to cause can-
cer, birth defects, or other reproductive harm.
Important Safety Instructions
SAVE THESE INSTRUCTIONS - This manual contains
important instructions that should be followed during the
initial set-up, the operation, and the maintenance of the
equipment. Save these original instructions for future
reference.
The safety alert symbol is used to identify safety
information about hazards that can result in personal injury.
A signal word (DANGER, WARNING, or CAUTION) is used
with the alert symbol to indicate the likelihood and the po-
tential severity of injury. In addition, a hazard symbol may be
used to represent the type of hazard.
DANGER indicates a hazard which, if not avoided,
will result in death or serious injury.
WARNING indicates a hazard which, if not avoid-
ed, could result in death or serious injury.
CAUTION indicates a hazard which, if not avoided,
could result in minor or moderate injury.
NOTICE indicates a situation that could result in dam-
age to the product.
FIRE MOVING PARTS SHOCK STOP
TOXIC FUMES KICKBACK EXPLOSION ON OFF
CHOKE
FUEL
HOT SURFACE
HAZARDOUS
CHEMICAL
WEAR EYE
PROTECTION
READ MANUAL FAST SLOW OIL
Safety Symbols and Meanings
WARNING
-
less, colorless, poison gas.
Breathing carbon monoxide can cause headache,
fatigue, dizziness, vomiting, confusion, seizures,
nausea, fainting or death.


through windows, doors, ventilation intakes, or other
openings.
Operator Safety
ROLL-OVER
HAZARD
AMPUTATION
HAZARD
FUEL
SHUT-OFF
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Operating Safety
Power equipment is only as safe as the operator. If it is misused,
or not properly maintained, it can be dangerous! Remember, you
are responsible for your safety and that of those around you. Use
common sense, and think through what you are doing. If you are not
sure that the task you are about to perform can be safely done with
the equipment you have chosen, ask a professional: contact your
local authorized dealer.
Read the Manual
The operator’s manual contains important safety information you
need to be aware of BEFORE you operate your unit as well as
DURING operation.
Safe operating techniques, an explanation of the product’s features
and controls, and maintenance information is included to help you get
the most out of your equipment investment.
Be sure to completely read the Safety Rules and Information found on
the following pages. Also completely read the Operation section.
Children
Tragic accidents can occur with children. Do not allow them
anywhere near the area of operation. Children are often
attracted to the unit and mowing activity. Never assume that
children will remain where you last saw them. If there is a risk
that children may enter the area where you are mowing, have
another responsible adult watch them.
DO NOT GIVE CHILDREN RIDES ON THIS UNIT! This
encourages them to come near the unit in the future while it
is running, and they could be seriously hurt. They may then
approach the unit for a ride when you are not expecting it,
and you may run over them.
Reverse
Do not mow in reverse unless
absolutely necessary.
Always look down
and behind before
and while traveling
in reverse even with
the mower blades
disengaged.
Safe Operation Practices
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3.5 ft
(1,5 m)
20.0 ft (6,0 m)
Slope Operation

steep an incline. Using the unit on a slope that is too steep or where you
don’t have adequate traction can cause you to lose control or roll over.
A good rule of thumb is to not operate on any slope you cannot back up

greater than a 3.5 foot rise over a 20 foot length. Always drive up and
down slopes: never cross the face.
Also note that the surface you are driving on can greatly impact stability
and control. Wet grass or icy pavement can seriously affect your ability to
control the unit.
If you feel unsure about operating the unit on an incline, don’t do it. It’s
not worth the risk.
Moving Parts
This equipment has many moving parts that can injure you or someone else.
However, if you are seated in the seat properly and follow all the rules in this book,
the unit is safe to operate.
The mower deck has spinning mower blades that can amputate hands and feet.
Do not allow anyone near the equipment while it is running!
To help you, the operator, use this equipment safely, it is equipped with an
operator-present safety system. Do NOT attempt to alter or bypass the system.
See your dealer immediately if the system does not pass all the safety interlock
system tests found in this manual.
Thrown Objects
This unit has spinning mower blades. These blades can pick up and throw
debris that could seriously injure a bystander. Be sure to clean up the area to
be mowed BEFORE you start mowing.
Do not operate this unit without the entire grass catcher or discharge guard
(deflector) in place.
Do not allow anyone in the mowing area while the unit is running! If someone
does enter the area, shut the unit off immediately until they leave.
Fuel and Maintenance
Gasoline is extremely flammable. Its vapors are also extremely flammable
and can travel to distant ignition sources. Gasoline must only be used as a
fuel, not as a solvent or cleaner. Fuel should never be stored any place where
its vapors can build up or travel to an ignition source like a pilot light. Fuel
belongs in an approved, plastic, sealed gas can, or in the tractor fuel tank with
the cap securely closed. Spilled fuel needs to be cleaned up immediately.
Proper maintenance is critical to the safety and performance of your unit. Be
sure to perform the maintenance procedures listed in this manual and be sure
to periodically test the safety system.
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GENERAL OPERATION
1. Read, understand, and follow all instructions in the
manual and on the unit before starting.
2. Do not put hands or feet near rotating parts or under

all times.
3. Only allow responsible adults, who are familiar with the
instructions, to operate the unit (local regulations can
restrict operator age).
4. Clear the area of objects such as rocks, toys, wire,
etc., which could be picked up and thrown by the
blade(s).
5. Be sure the area is clear of other people before
mowing. Stop the unit if anyone enters the area.
6. Never carry passengers.
7. Do not mow in reverse unless absolutely necessary.
Always look down and behind before and while
travelling in reverse.
8. Never direct discharge material toward anyone. Avoid
discharging material against a wall or obstruction.
Material may ricochet back toward the operator. Stop
the blade(s) when crossing gravel surfaces.
9. Do not operate the machine without the entire grass
catcher, discharge guard (deflector), or other safety
devices in place.
10. Slow down before turning.
11. Never leave a running unit unattended. Always
disengage the PTO, set parking brake, stop engine,
and remove starter insert before dismounting.
12. Disengage blades (PTO) when not mowing. Shut off
engine and wait for all parts to come to a complete
stop before cleaning the machine, removing the grass
catcher, or unclogging the discharge guard.
13. Operate the machine only in daylight or good artificial
light.
14. Do not operate the unit while under the influence of
alcohol or drugs.
15 Watch for traffic when operating near or crossing
roadways.
16. Use extra care when loading or unloading the unit into
a trailer or truck.
17. Always wear eye protection when operating this unit.
18. Data indicates that operators, age 60 years and
above, are involved in a large percentage of power
equipment-related injuries. These operators should
evaluate their ability to operate the equipment safely
enough to protect themselves and others from injury.
19. Follow the manufacturer’s recommendations for wheel
weights or counterweights.

occurring to other people or property.
21. All drivers should seek and obtain professional and
practical instruction.
22. Always wear substantial footwear and trousers. Never
operate when barefoot or wearing sandals.
23. Before using, always visually check that the blades
and blade hardware are present, intact, and secure.
Replace worn or damaged parts.
24. Disengage attachments before: refueling, removing
an attachment, making adjustments (unless the
adjustment can be made from the operator’s position).
25. When the machine is parked, stored, or left
unattended, lower the cutting means unless a positive
mechanical lock is used.
26. Before leaving the operator’s position for any reason,
engage the parking brake (if equipped), disengage the
PTO, stop the engine, and remove the starter insert.
27. To reduce fire hazard, keep the unit free of grass,
leaves, & excess oil. Do not stop or park over dry
leaves, grass, or combustible materials.
TRANSPORTING AND STORAGE
1. When transporting the unit on an open trailer, make
sure it is facing forward, in the direction of travel. If the
unit is facing backwards, wind lift could damage the
unit.
2. Always observe safe refueling and fuel handling
practices when refueling the unit after transportation or
storage.
3. Never store the unit (with fuel) in an enclosed poorly
ventilated structure. Fuel vapors can travel to an
ignition source (such as a furnace, water heater, etc.)
and cause an explosion. Fuel vapor is also toxic to
humans and animals.
4. Always follow the engine manual instructions for
storage preparations before storing the unit for both
short and long term periods.
5. Always follow the engine manual instructions for
proper start-up procedures when returning the unit to
service.
6. Never store the unit or fuel container inside where
there is an open flame or pilot light, such as in a water
heater. Allow unit to cool before storing.
Read these safety rules and follow them closely. Failure to obey these rules could result in loss of control
of unit, severe personal injury or death to you, or bystanders, or damage to property or equipment. This
mowing deck is capable of amputating hands and feet and throwing objects. The triangle in text
signifies important cautions or warnings which must be followed.
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CHILDREN
Tragic accidents can occur if the operator is not alert to the
presence of children. Children are often attracted to the unit
and the mowing activity. Never assume that children will
remain where you last saw them.
 
watchful care of another responsible adult.
2. Be alert and turn unit off if children enter the area.
3. Before and during reverse operation, look behind and
down for small children.
4. Never carry children, even with the blade(s) off. They
may fall off and be seriously injured or interfere with
safe unit operation. Children who have been given
rides in the past may suddenly appear in the mowing
area for another ride and be run over or backed over
by the machine.
5. Never allow children to operate the unit.
6. Use extra care when approaching blind corners,
shrubs, trees, or other objects that may obscure vision.
EMISSIONS
1. Engine exhaust from this product contains chemicals
known, in certain quantities, to cause cancer, birth
defects, or other reproductive harm.
2. Look for the relevant Emissions Durability Period and
Air Index information on the engine emissions label.
IGNITION SYSTEM
1. This spark ignition system complies with Canadian
ICES-002.
SLOPE OPERATION
Slopes are a major factor related to loss-of-control and tip-
over accidents, which can result in severe injury or death.
Operation on all slopes requires extra caution. If you cannot
back up the slope or if you feel uneasy on it, do not operate
on it.
Control of a walk-behind or ride-on machine sliding on a
slope will not be regained by the application of the brake.
The main reasons for loss of control are: insufficient tire grip
on the ground, speed too fast, inadequate braking, the type
of machine is unsuitable for its task, lack of awareness of the
ground conditions, incorrect hitching and load distribution.
1. Mow up and down slopes, not across.
2. Watch for holes, ruts, or bumps. Uneven terrain could
overturn the unit. Tall grass can hide obstacles.
3. Choose a slow speed so that you will not have to stop
or change speeds while on the slope.
4. Do not mow on wet grass. Tires may loose traction.
5. Always keep unit in gear especially when traveling
down slopes. Do not shift to neutral and coast
downhill.
6. Avoid starting, stopping, or turning on a slope. If tires
lose traction, disengage the blade(s) and proceed
slowly straight down the slope.
 
not make sudden changes in speed or direction, which
could cause the machine to rollover.
8. Use extra care while operating machines with grass
catchers or other attachments; they can affect the
stability of the unit. Do not use on steep slopes.
9. Do not try to stabilize the machine by putting your foot
on the ground (ride-on units).
10. Do not mow near drop-offs, ditches, or embankments.
The mower could suddenly turn over if a wheel is over
the edge of a cliff or ditch, or if an edge caves in.
11. Do not use grass catchers on steep slopes.
12. Do not mow slopes if you cannot back up them.
13. See your authorized dealer/retailer for
recommendations of wheel weights or counterweights
to improve stability.
14. Remove obstacles such as rocks, tree limbs, etc.
15. Use slow speed. Tires may lose traction on slopes
even through the brakes are functioning properly.
16. Do not turn on slopes unless necessary, and then, turn
slowly and gradually downhill, if possible.

1. Tow only with a machine that has a hitch designed for
towing. Do not attach towed equipment except at the
hitch point.
2. Follow the manufacturer’s recommendations for
weight limit for towed equipment and towing on slopes.
3. Never allow children or others in or on towed
equipment.
4. On slopes, the weight of the towed equipment may
cause loss of traction and loss of control.
5. Travel slowly and allow extra distance to stop.
6. Do not shift to neutral and coast down hill.
WARNING
Never operate on slopes greater than 17.6 percent
(10°) which is a rise of 3-1/2 feet (106 cm) vertically in
20 feet (607 cm) horizontally.
When operating on slopes use additional wheel
weights or counterweights. See your dealer/retailer
to determine which weights are available and
appropriate for your unit.
Select slow ground speed before driving onto
slope. In addition to front weights, use extra caution
when operating on slopes with rear-mounted grass
catchers.
Mow UP and DOWN the slope, never across the
face, use caution when changing directions and DO
NOT START OR STOP ON SLOPE.
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SERVICE AND MAINTENANCE
Safe Handling of Gasoline
1. Extinguish all cigarettes, cigars, pipes, and other
sources of ignition.
2. Use only approved gasoline containers.
3. Never remove the gas cap or add fuel with the engine
running. Allow the engine to cool before refueling.
4. Never fuel the machine indoors.
5. Never store the machine or fuel container where there
is an open flame, spark, or pilot light such as near a
water heater or other appliance.
6. Never fill containers inside a vehicle or on a truck bed
with a plastic bed liner. Always place containers on the
ground away from your vehicle before filling.
7. Remove gas-powered equipment from the truck or
trailer and refuel it on the ground. If this is not possible,
then refuel such equipment on a trailer with a portable
container, rather than from a gasoline dispenser
nozzle.
 
container opening at all times until fueling is complete.
Do not use a nozzle lock-open device.
9. If fuel is spilled on clothing, change clothing
immediately.
10. Never over-fill the fuel tank. Replace gas cap and
tighten securely.
11. Use extra care in handling gasoline and other fuels.
They are flammable and vapors are explosive.
12. If fuel 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 fuel vapors
have dissipated.
13. Replace all fuel tank caps and fuel container caps
securely.
Service & Maintenance
1. Never run the unit in an enclosed area where carbon
monoxide fumes may collect.
 
bolts, tight and keep equipment in good condition.
3. Never tamper with safety devices. Check their proper
operation regularly and make necessary repairs if they
are not functioning properly.
 
up. Clean up oil or fuel spillage. and remove any fuel-
soaked debris. Allow machine to cool before storage.
5. If you strike an object, stop and inspect the machine.
Repair, if necessary, before restarting.
6. Never make adjustments or repairs with the engine
running.
7. Check grass catcher components and the discharge
guard frequently and replace with manufacturer’s
recommended parts, when necessary.
8. Mower blades are sharp. Wrap the blade or wear
gloves, and use extra caution when servicing them.
9. Check brake operation frequently. Adjust and service
as required.
10. Maintain or replace safety and instructions labels, as
necessary.
11. Do not remove the fuel filter when the engine is hot
as spilled gasoline may ignite. Do not spread fuel line
clamps further than necessary. Ensure clamps grip
hoses firmly over the filter after installation.
12. Do not use gasoline containing METHANOL, gasohol
containing more than 10% ETHANOL, gasoline
additives, or white gas because engine/fuel system
damage could result.
13. If the fuel tank must be drained, it should be drained
outdoors.
14. Replace faulty silencers/mufflers.
15. Use only factory authorized replacement parts when
making repairs.
16. Always comply with factory specifications on all
settings and adjustments.
17. Only authorized service locations should be utilized for
major service and repair requirements.
18. Never attempt to make major repairs on this unit
unless you have been properly trained. Improper
service procedures can result in hazardous operation,
equipment damage and voiding of manufacturer’s
warranty.
19. On multiple blade mowers, take care as rotating one
blade can cause other blades to rotate.
20. Do not change engine governor settings or over-speed
the engine. Operating the engine at excessive speed
can increase the hazard of personal injury.
21. Disengage drive attachments, stop the engine, remove
the starter insert, and disconnect the spark plug
wire(s) before: clearing attachment blockages and
chutes, performing service work, striking an object, or
if the unit vibrates abnormally. After striking an object,
inspect the machine for damage and make repairs
before restarting and operating the equipment.
22. Never place hands near the moving parts, such as a
hydro pump cooling fan, when the tractor is running.
(Hydro pump cooling fans are typically located on top
of the transaxle).
23. Units with hydraulic pumps, hoses, or motors:
WARNING: Hydraulic fluid escaping under pressure
may have sufficient force to penetrate skin and cause
serious injury. If foreign fluid is injected into the skin
it must be surgically removed within a few hours by a
doctor familiar with this form of injury or gangrene may

nozzles that eject hydraulic fluid under high pressure.
Use paper or cardboard, and not hands, to search
for leaks. Make sure all hydraulic fluid connections
are tight and all hydraulic hoses and lines are in good
condition before applying pressure to the system. If
leaks occur, have the unit serviced immediately by
your authorized dealer.
24. WARNING: Stored energy device. Improper release of
springs can result in serious personal injury. Springs
should be removed by an authorized technician.
25. Models equipped with an engine radiator: WARNING:
Stored energy device. To prevent serious bodily injury
from hot coolant or steam blow-out, never attempt to
remove the radiator cap while the engine is running.
Stop the engine and wait until it is cool. Even then, use
extreme care when removing the cap.
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Figure 1
Transmission
Release
Part No. 1723160
1723160
SS
TT
OO
PP
SS
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Decal - Ignition
Switch Positions
Part No. 1722806
Danger, Rotating Blades,
Part No. 1704277
Decal - Operating Instructions,
Part No. 1726923
Danger, Rotating Blades,
Part No. 1704276
Decal Locations (Safety and Operation)
Part No.
1721197
Decal - Cutting Height
1723143
Decal - Attachment Lift,
Part No. 1723143
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12
Features and Controls
Control Functions
Throttle Control
The throttle controls engine speed (see Figure 2). Move
the throttle forward to increase engine speed and back to
decrease engine speed. Always operate at FULL throttle.
Headlights
The light switch turns the tractor headlights on and off.
Reverse Mowing Option (RMO)
The Reverse Mowing Option allows for mowing (or use of
other PTO driven attachments) while traveling in reverse.
If you choose to mow or operate another attachment in
reverse, turn the RMO key after the PTO is engaged. The
L.E.D. light will illuminate, and the operator can then mow
in reverse. Each time the PTO is disengaged the RMO
needs to be reactivated if desired.
12V
Figure 2
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PTO Switch
The PTO (Power Take-Off) switch engages and
disengages attachments that use the PTO. To engage the
PTO, pull UP on the switch. Push DOWN to disengage.
Note that the operator must be seated firmly in the tractor
seat for the PTO to function.
Ignition Switch
The ignition switch starts and stops the engine, it has
three positions:
OFF Stops the engine and shuts off the
electrical system.
RUN Allows the engine to run and powers the
electrical system.
START Cranks the engine for starting.
NOTE: Never leave the ignition switch in the RUN
position with the engine stopped–this drains the battery.
Brake Pedal
Depressing the brake pedal applies the tractor brake.
Ground Speed Pedals
The tractor’s forward ground speed is controlled by the
forward ground speed control pedal. The tractor’s reverse
ground speed is controlled by the reverse ground speed
control pedal.
Depressing either pedal will increase ground speed. Note
that the further down the pedal is depressed, the faster
the tractor will travel.
Parking Brake
The parking brake knob is used to lock the parking brake
when the tractor is stopped. Fully depressing the brake
pedal and pulling up on the knob engages the parking
brake
Mower Height of Cut Adjustment
The cutting height is adjustable between 1.0” and 4.0”
(2,5 and 10,2 cm).
The cutting height adjustment switch controls the mower
cutting height. This same switch also controls the spout
rotator motor when a snowthrower is installed. The arrows
on the switch correspond to the direction of adjustment
(UP arrow raises cutting height, RIGHT arrow rotates
the spout right, etc). When the adjustment indicator has
reached the end of its travel, release the switch; holding
the switch down will damage the motor.
Cruise Control
The cruise control is used to lock the ground speed
control in forward. Move the lever forward until the
desired ground speed is reached. To disengage the
cruise control move the lever back. In the event you need
to stop quickly, depressing the brake pedal will also return
the cruise control to neutral.
Seat Adjustment Lever
The seat can be adjusted forward and back. Move the
lever, position the seat as desired, and release the lever
to lock the seat into position.
Transmission Release Lever
The transmission release lever deactivates the trans-
mission so that the tractor can be pushed by hand. See
Pushing the Tractor by Hand.
Fuel Tank
To remove the cap, turn counterclockwise. The fuel
gauge is part of the dashboard.
12V Power Outlet
The power outlet is 12V-DC. Accessory must be rated at
9 amps or less.
Differential Lock Pedal
Depressing this pedal locks the transmission differential,
locking both rear wheels into “drive”.
Use this feature if the tractor is stuck because one
wheel is slipping. Engage the differential lock at slow
ground speeds only.
Attachment Lift Control Lever
When using the mower deck, lift the deck off the ground
while transporting to and from the job site. DO NOT cut
with the mower in the raised, transport position.
The attachment lift control lever raises and lowers
attachments that utilize the tractor’s manual lift linkage.
To lower an attachment: pull the lever back slightly,
depress the release button, and push the lever forward
until it locks in the lowered position. To raise an
attachment: push the lever forward slightly, depress the
release button, then pull the lever back until it locks in the
raised position.
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14
Dashboard Display and Functions
A. FUEL LEVEL
Indicates the amount of fuel in the fuel tank. Left is empty;
right is full (Figure 3).
B. HOUR METER / CLOCK / SERVICE INDICATOR
Displays the clock, hour meter, and maintenance reminder.
The hour meter measures the number of hours the key has
been in the RUN position. The hour meter will flash an initial
oil change indicator at 5 hours, and a lubrication reminder
every 50 hours. These reminders display for approximately
two hours and will automatically reset themselves.
NOTE: The hour meter will register the passage of time
when the key is in the RUN position, even if the engine is not
running. The hour meter has a self contained power source
so the total hours are always visible.
C. SELECT BUTTON
Used to set the clock and reset the maintenance reminder.
D. SET BUTTON
Used to set the clock and reset the maintenance reminder.
E. PTO LIGHT
Indicates the PTO switch is in the ON position.
F. CRUISE CONTROL LIGHT
Indicates that the cruise control is engaged.
G. LOW OIL PRESSURE LIGHT
Indicates that the engine oil pressure is low. The light will
turn on when the tractor is first started and then go out. IF
THIS LIGHT TURNS ON WHILE THE TRACTOR IS IN USE,
See an authorized
dealer.
H. LOW VOLTAGE LIGHT
Indicates that the electrical system voltage is low. The light will
turn on when the tractor is first started and then go out. IF THIS
LIGHT TURNS ON WHILE THE TRACTOR IS IN USE,
. See an authorized
dealer.
Figure 3
AB
C
D
HGF E
Functions
Display Total Running Hours - When the key switch is
first turned to the RUN position, all warning indicators will
light and the total running hours will be displayed. Be sure all
lights are functioning.
Display PTO Hours - Turn the key OFF, engage the PTO,
and turn the key to RUN (engine off).
Set the Clock - Start the engine, leave the engine running.
Depress the select button (C) for three (3) seconds and
release. Depress set button and HOLD to advance time.
Depress select button to select minutes. Depress and HOLD
set button (D) to advance time. Leave alone for 5 seconds
and clock will activate. Shut off engine.
Demonstration Mode - With the engine off, hold down the
set button (D) and turn the key switch to RUN.
Maintenance Reminder - A maintenance reminder will
display in the information window (B) after the first 5 hours
of operation, and then after every 50 hours. The reminder
will automatically reset after 5 hours. The reminder can be
manually reset by turning the key switch from OFF to RUN
(with engine off) and then depressing the set (D) and select
(C) buttons simultaneously for 5 seconds.
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Parking Brake Function
Applying the Parking Brake - See Figure 4. To lock the
parking brake, release the ground speed pedals (A), fully
depress the brake pedal (B), pull UP on the parking brake
knob (C), and then release brake pedal.
Releasing the Parking Brake - See Figure 4. To release
the parking brake, fully depress the brake pedal (B) and
push the parking brake knob (C) DOWN.
Advanced Traction Control
What is Advanced Traction Control?
Advanced Traction Control (ATC) is an exclusive feature of our
transmissions that provides improved traction. ATC applies
a preset amount of torque to both rear wheels even if one
starts slipping (a transmission without ATC will lose traction
completely if one rear wheel starts slipping). This preset torque
is just enough to provide additional traction, and still allow
the wheels to turn at different speeds in a tight turn without
damaging the lawn.
What to Expect from Your ATC Tractor
For the most part, while using your tractor you will not notice
ATC working, and you will simply become accustomed to
increased traction an ATC transmission provides.
Under certain circumstances the ATC system limit can be
exceeded, and one of the rear wheels may slip (for instance
if trying to turn up a hill while accelerating). This is normal. If
you start to lose traction, do not speed up. Instead, slow to
a stop, straighten the steering wheel, and slowly accelerate.
Stopping the tractor allows the transmission to regain more
traction.
12 Volt Power Outlet
The 12-volt accessory plug is located in the left side pod. It
can be used to power small electronic devices. The accessory
must be rated at 9 amps or less.
NOTE: Operating a 12-volt accessory, especially with the
engine at idle, may cause battery discharge. When not using
the accessory plug it must be covered with the rubber plug
to prevent moisture from causing a short circuit. Entrance of
water into plug can cause a short circuit.
A
B
C
Figure 4
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Operation
Safety Interlock System Tests
This unit is equipped with safety interlock switches and
other safety devices. These safety systems are present
for your safety: do not attempt to bypass safety switches,
and never tamper with safety devices.
WARNING
If the unit does not pass a safety test, do not
operate it. See your authorized dealer.
Test 1 — Engine should NOT crank if:
  
  
OFF), OR
  
Test 2 — Engine SHOULD crank if:
  
  
AND
  
Test 3 — Engine should SHUT OFF if:
  
  
depressed (parking brake OFF).
Test 4 — Check Mower Blade Stopping Time
Mower blades and mower drive belt should come to a
complete stop within five seconds after electric PTO
switch is turned OFF. If mower drive belt does not stop
within five seconds, see an authorized dealer.
Test 5 — Check Reverse Mow Option (RMO)
  
if the PTO has been switched on and RMO has not
been activated.
  
activated.
NOTE: Once the engine has stopped, the PTO switch
must be turned off after the operator returns to the seat in
order to start the engine.
Oil Recommendations
We recommend the use of Briggs & Stratton Warranty
Certified oils for best performance. Other high-quality
detergent oils are acceptable if classified for service SF,
SG, SH, SJ or higher. Do not use special additives.
Outdoor temperatures determine the proper oil viscosity
for the engine. Use the chart to select the best viscosity
for the outdoor temperature range expected.
Checking/Adding Oil
Before adding or checking the oil
 
 
1. Remove the dipstick (A, Figure 5) and wipe with a
clean cloth.
2. Insert and tighten the dipstick.
3. Remove the dipstick and check the oil level. It should
be at the FULL mark (B) on the dipstick.
4. If low, add oil slowly into the engine oil fill (C). Do not
overfill. After adding oil, wait one minute and then
recheck the oil level.
NOTE: Do not add oil at the quick oil drain (if equipped).
5. Replace and tighten the dipstick.
* Below 40°F (4°C) the use of SAE 30 will result in hard starting.
** Above 80°F (27°C) the use of 10W-30 may cause increased oil consumption. Check oil
level more frequently.
16
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17
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Figure 5
Adding Fuel
WARNING
Fuel and its vapors are extremely flammable
and explosive.
Fire or explosion can cause severe burns or
death.
When Adding Fuel
   
minutes before removing the fuel cap.
 
  
the fuel, do not fill above the bottom of the fuel tank
neck.
  
lights, heat, and other ignition sources.
  
for cracks or leaks. Replace if necessary.
  
engine.
Oil Pressure
If the oil pressure is too low, a pressure switch (if
equipped) will either stop the engine or activate a
warning device on the equipment. If this occurs, stop the
engine and check the oil level with the dipstick.
If the oil level is below the ADD mark, add oil until it
reaches the FULL mark. Start the engine and check for
proper pressure before continuing to operate.
If the oil level is between the ADD and FULL marks, do
not start the engine. Contact an authorized dealer to
have the oil pressure problem corrected.
Fuel Recommendations
Fuel must meet these requirements:
 
 
tude use, see below.
 
15% MTBE (methyl tertiary butyl ether) is acceptable.
CAUTION: Do not use unapproved gasolines, such
as E85. Do not mix oil in gasoline or modify the engine
to run on alternate fuels. This will damage the engine
components and void the engine warranty.
To protect the fuel system from gum formation, mix a fuel
stabilizer into the fuel. See the Storage section. All fuel is
not the same. If starting or performance problems occur,
change fuel providers or change brands. This engine is
certified to operate on gasoline. The emissions control
system for this engine is EM (Engine Modifications).
High Altitude
At altitudes over 5,000 feet (1,524 meters), a minimum

remain emissions compliant, high altitude adjustment is
required. Operation without this adjustment will cause
decreased performance, increased fuel consumption,
and increased emissions. See an authorized dealer for
high altitude adjustment information.
Operation of the engine at altitudes below 2,500 feet (762
meters) with the high altitude kit is not recommended.
C
A
A
B
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18
WARNING
Engines give off carbon monoxide, an
odorless, colorless, poison gas.
Breathing carbon monoxide can cause
nausea, fainting or death.
 
  
doors or windows are open.
Starting the Engine
WARNING
Fuel and its vapors are extremely flammable
and explosive.
Fire or explosion can cause severe burns or
death.
When Starting Engine
  
cleaner (if equipped) are in place and secured.
 
  
RUN position, move throttle (if equipped) to FAST
position and crank until engine starts.
1. Check the oil level. See the How to Check/Add Oil
section.
2. Make sure equipment drive controls are disengaged.
3. Move the throttle control to the FAST position.
Operate the engine in the FAST position.
4. Turn the electric start switch to the ON/START
position.
NOTE: If the engine does not start after repeated
attempts, go to BRIGGSandSTRATTON.COM or call
1-800-233-3723 (in USA).
NOTICE: To extend the life of the starter, use short
starting cycles (five seconds maximum). Wait one minute
between starting cycles.
1. Clean the fuel cap area of dirt and debris. Remove
the fuel cap (A, Figure 6).
2. Fill the fuel tank with fuel. To allow for expansion of
the gasoline, do not fill above the bottom of the
fuel tank neck.
3. Reinstall the fuel cap.
A
Figure 6
Driving the Tractor
1. Sit in the seat and adjust the seat so that you can
comfortably reach all the controls and see the
dashboard display.
2. Engage the parking brake.
3. Make sure the PTO switch is disengaged.
4. Start the engine (see Starting the Engine).
5. Disengage the parking brake and release the
brake pedal.
6. Depress the forward ground speed control pedal to
travel forward. Release the pedal to stop. Note that the
further down the pedal is depressed the faster the tractor
will travel.
7. Stop the tractor by releasing the ground speed control
pedals, setting the parking brake, and stopping the
engine (see Stopping the Tractor and Engine).
Mowing
1. Set the mower cutting height to the desired level and set
the gauge wheels to the appropriate position.
2. Engage the parking brake. Make sure the PTO switch
is disengaged.
3. Start the engine (see Starting the Engine).
4. Move the throttle control to the FAST position.
5. Engage the PTO (Mower Deck).
6. Begin mowing.
7. When finished, shut off the PTO and raise the mower
using the attachment lift control lever.
8. Stop the engine (see Stopping the Tractor and
Engine).
Not for
Reproduction

19
en
WARNING
The engine will shut off if the reverse ground speed
pedal is depressed while the PTO is on and the
RMO has not been activated. The operator should
always turn the PTO off prior to driving across
on roads, paths or any area that maybe used by
other vehicles. Sudden loss of drive could create a
hazard.
WARNING
Mowing in reverse can be hazardous to bystanders.
Tragic accidents can occur if the operator is not
alert to the presence of children. Never activate
RMO if children are present. Children are often
attracted to the unit and the mowing activity.
Attachment Operation in Reverse
If an operator chooses to operate a PTO driven attachment
in reverse, the RMO system can be used. To use the
Reverse Mowing Option (RMO) turn the RMO key after
the PTO is engaged. The L.E.D. light will illuminate, and
the operator can then operate the attachment in reverse.
Each time the PTO is disengaged the RMO needs to be
reactivated if desired. The key should be removed to restrict
access to the RMO feature.
Pushing the Tractor by Hand
1. Disengage the PTO and turn the engine off.
2. Pull the transmission release (B, Figure 7) back
approximately 2-1/2” (6 cm) to lock into released position.
3. The tractor can now be pushed by hand.
Mowing in Reverse (RMO)
If an operator chooses to mow in reverse, the RMO system
can be used. To use the Reverse Mowing Option (RMO) turn
the RMO key after the PTO is engaged. The L.E.D. light will
illuminate, and the operator can then mow in reverse. Each
time the PTO is engaged the RMO needs to be reactivated if
desired. The key should be removed to restrict access to the
RMO feature.
B
A
DO NOT TOW TRACTOR
Towing the unit will cause transmission


transmission release valve lever while the
engine is running.
Stopping the Tractor and Engine
1. Move the throttle control to the SLOW position.
2. Turn the key switch to the OFF position.
3. Remove the key and keep in a safe place out of the
reach of children.
WARNING
Fuel and its vapors are extremely
flammable and explosive.
Fire or explosion can cause severe burns
or death.
Figure 7
Not for
Reproduction

20
Attaching a Trailer
The maximum horizontal drawbar force allowed 444 Newton.
The maximum vertical drawbar force is 222 Newton. This
equates to a 396 lbs (180 kg) trailer on a 10 degree hill.
Secure the trailer with an appropriately sized clevis pin (A,
Figure 9) and clip (B).
Adjusting Mower Cutting Height
The cutting height is adjustable between 1.0” and 4.0” (2,5
and 10,2 cm).
The cutting height adjustment switch (A, Figure 8) controls
the mower cutting height. This same switch also controls
the spout rotator motor when a snowthrower is installed.
The arrows on the switch correspond to the direction of
adjustment (UP arrow raises cutting height, RIGHT arrow
rotates the spout right, etc). When the adjustment indicator
has reached the end of its travel, release the switch; holding
the switch down will damage the motor.
A
A
B
Figure 8
Figure 9
B
C
A
Figure 10
Seat Adjustment
Pitch Adjustment
The pitch of the seat can be adjusted to one of three
positions. To adjust, remove the carriage bolts, spacers,
washers, and nuts (A, Figure 10) from the hinge and
reinstall them in the desired holes.
Seat Slide Adjustment
The seat can also be adjusted forward and back. Move
the lever (B, Figure 10), position the seat as desired, and
release the lever to lock the seat into position.
Seat Spring Adjustment
The seat springs (C, Figure 10) can be adjusted to

slide the spring assembly forward for a softer ride, and

Not for
Reproduction