Bush Hog Grass Catcher Operator`s manual

BUSH HOG
®
Estate Series
ZERO TURN MOWER
Operator’s Manual
ASSEMBLY ● OPERATION ● MAINTENANCE
204
$4.00
50043313
CONGRATULATIONS!
You have invested in the best ZT Rider on the market today.
The care you give your Bush Hog ZT will greatly determine your satisfaction
with its performance and its service life. We urge a careful study of this manual to provide
you with a thorough understanding of your new Rider before operating, as well as
suggestions for operation and maintenance.
If your manual should become lost or destroyed, Bush Hog will be glad to provide you with
a new copy. Order from Bush Hog, P. O. Box 1039, Selma, Alabama 36702-1039.
As an authorized Bush Hog dealer, we stock genuine Bush Hog parts which are
manufactured with the same precision and skill as our original equipment. Our trained
service personnel are well informed on methods required to service Bush Hog equipment,
and are ready and able to help you.
Should you require additional information or assistance, please contact us.
YOUR AUTHORIZED
BUSH HOG DEALER
BECAUSE BUSH HOG MAINTAINS AN ONGOING
PROGRAM OF PRODUCT IMPROVEMENT, WE
RESERVE THE RIGHT TO MAKE IMPROVEMENTS IN
DESIGN OR CHANGES IN SPECIFICATIONS WITHOUT INCURRING ANY OBLIGATION TO INSTALL
THEM ON UNITS PREVIOUSLY SOLD.
BECAUSE OF THE POSSIBILITY THAT SOME
PHOTOGRAPHS IN THIS MANUAL WERE TAKEN OF
PROTOTYPE MODELS, PRODUCTION MODELS MAY
VARY IN SOME DETAIL. IN ADDITION, SOME
PHOTOGRAPHS MAY SHOW SHIELDS REMOVED
FOR PURPOSES OF CLARITY. NEVER OPERATE
THIS IMPLEMENT WITHOUT ALL SHIELDS IN PLACE.
ESTATE SERIES ZERO TURN RIDERS
TABLE OF CONTENTS
SECTION
I
PAGE
SECTION
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Dealer Preparation Check List . . . . . . . . . 3
Safety Precautions . . . . . . . . . . . . . . . . . . 4
INTRODUCTION AND DESCRIPTION . . 8
Introduction. . . . . . . . . . . . . . . . . . . . . . . . 8
Description . . . . . . . . . . . . . . . . . . . . . . . . 8
Specifications . . . . . . . . . . . . . . . . . . . . . . 9
II
OPERATION . . . . . . . . . . . . . . . . . . . . . 10
General Safety . . . . . . . . . . . . . . . . . . . . 10
Pre-Operation Checklist . . . . . . . . . . . . . 10
Operation . . . . . . . . . . . . . . . . . . . . . . . . 10
Mowing Recommendations . . . . . . . . . . 12
III
MAINTENANCE . . . . . . . . . . . . . . . . . . . 13
Maintenance Schedule. . . . . . . . . . . . . . 13
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
PAGE
Mower Blades . . . . . . . . . . . . . . . . . . . . .14
Neutral Adjustment . . . . . . . . . . . . . . . . .15
Motion Control Neutral Adjustment . . . .15
Control Lever Adjustment . . . . . . . . . . . .15
Leveling The Deck . . . . . . . . . . . . . . . . .16
Deck Belt Adjustment . . . . . . . . . . . . . . .16
Deck Belt Replacement . . . . . . . . . . . . .16
Hydrostatic Belt Adjustment . . . . . . . . . .17
Hydrostatic Belt Replacement . . . . . . . .17
Start Up Maintenance . . . . . . . . . . . . . . .17
Hydrostatic Transaxle Maintenance . . . .17
Purging Procedures . . . . . . . . . . . . . . . .18
Parking Brake Adjustment . . . . . . . . . . .18
Troubleshooting . . . . . . . . . . . . . . . . . . .19
IV ASSEMBLY . . . . . . . . . . . . . . . . . . . . . .20
Safety Decals . . . . . . . . . . . . . . . . . . . . .21
Torque Specifications . . . . . . . . . . . . . . .23
RETAIL CUSTOMER’S RESPONSIBILITY
UNDER THE BUSH HOG WARRANTY
It is the Retail Customer and/or Operator’s responsibility to read the Operator’s Manual, to
operate, lubricate, maintain and store the product in accordance with all instructions and
safety procedures. Failure of the operator to read the Operator’s Manual is a misuse of this
equipment.
It is the Retail Customer and/or Operator’s responsibility to inspect the product and to have
any part(s) repaired or replaced when continued operation would cause damage or excessive wear to other parts or cause a safety hazard.
It is the Retail Customer’s responsibility to deliver the product to the authorized Bush Hog
Dealer, from whom he purchased it, for service or replacement of defective parts which are
covered by warranty. Repairs to be submitted for warranty consideration must be made within forty-five (45) days of failure.
It is the Retail Customer’s responsibility for any cost incurred by the Dealer for traveling to or
hauling of the product for the purpose of performing a warranty obligation or inspection.
1
BUSH HOG®
ESTATE SERIES ZERO TURN RIDER LIMITED WARRANTY
✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯
Bush Hog warrants to the original purchaser that this new Bush Hog Estate Rider, purchased from an
authorized Bush Hog dealer, that the equipment be free from defects in material and workmanship for a period
of two (2) years from date of retail sale when purchased for residential use. “Residential use” means use on the
same property as the purchasers’ home. The obligation of Bush Hog to the purchaser under this warranty is
limited to the repair or replacement of defective parts. NOTE: The spindle assemblies have a three (3) year
limited warranty. This warranty covers parts and labor for the first two years and parts only during the
third year.
Replacement or repair parts installed in the equipment covered by this limited warranty are warranted
for ninety (90) days from the date of purchase of such part or to the expiration of the applicable new equipment warranty period, whichever occurs later. Warranted parts shall be provided at no cost to the user at an
authorized Bush Hog dealer during regular working hours. Bush Hog reserves the right to inspect any equipment or parts which are claimed to have been defective in material or workmanship.
DISCLAIMER OF IMPLIED WARRANTIES & CONSEQUENTIAL DAMAGES
Bush Hog’s obligation under this limited warranty, to the extent allowed by law, is in lieu of all warranties, implied or expressed, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE and any liability for incidental and consequential damages with respect to
the sale or use of the items warranted. Such incidental and consequential damages shall include but not be
limited to: transportation charges other than normal freight charges; cost of installation other than cost
approved by Bush Hog; duty; taxes; charges for normal service or adjustment; loss of crops or any other loss of
income; rental of substitute equipment, expenses due to loss, damage, detention or delay in the delivery of
equipment or parts resulting from acts beyond the control of Bush Hog.
THIS LIMITED WARRANTY SHALL NOT APPLY:
1. To transportation to and from dealership or service calls made by dealers, ie, driving time, towing,
pickup and delivery.
2. To vendor items which carry their own warranties, such as engines, batteries, tires, and tubes.
3. If the unit has been subjected to misapplication, abuse, misuse, negligence, fire or other accident.
4. If parts not made or supplied by Bush Hog have been used in connection with the unit, if, in the sole judgement of Bush Hog such use affects its performance, stability or reliability.
5. If the unit has been altered or repaired outside of an authorized Bush Hog dealership in a manner
which, in the sole judgement of Bush Hog, affects its performance, stability or reliability.
6. To normal maintenance service and normal replacement items such as gearbox lubricant, hydraulic fluid,
worn blades, or to normal deterioration of such things as belts and exterior finish due to use or
exposure.
7. To expendable or wear items such as teeth, chains, sprockets, belts, springs and any other items that in the
company’s sole judgement is a wear item.
NO EMPLOYEE OR REPRESENTATIVE OF BUSH HOG IS AUTHORIZED TO CHANGE THIS LIMITED WARRANTY IN ANY WAY OR GRANT ANY OTHER WARRANTY UNLESS SUCH CHANGE IS MADE
IN WRITING AND SIGNED BY BUSH HOG’S SERVICE MANAGER, POST OFFICE BOX 1039, SELMA,
ALABAMA 36702-1039.
✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯
Record the model number, serial number and date
purchased. This information will be helpful to your
dealer if parts or service are required.
MODEL NUMBER
SERIAL NUMBER
MAKE CERTAIN THE WARRANTY REGISTRATION
CARD HAS BEEN FILED WITH BUSH HOG/
SELMA, ALABAMA
DATE OF RETAIL SALE
2
DEALER PREPARATION CHECK LIST
ESTATE SERIES ZERO TURN RIDER
BEFORE DELIVERING MACHINE — The following check list should be completed.
Use the Operator’s Manual as a guide.
❒
❒
❒
❒
❒
❒
❒
❒
❒
❒
1.
Engine has been serviced.
2.
Battery fluid level is checked.
3.
Low oil pressure warning light checked for operation.
4.
Operator interlock switches checked for operation.
5.
Assembly completed.
6.
All fittings lubricated.
7.
All shields in place and in good condition.
8.
All fasteners torqued to specifications given in Torque Chart.
9.
All decals in place and readable. (See decal page.)
❒
❒
11. Parking brake checked and adjusted, if necessary.
❒
❒
13. Check tire pressure.
10. Overall condition good (i.e. paint, welds)
12. Steering checked and adjusted, if necessary.
14. Operators manual has been delivered to owner and he has been instructed
on the safe and proper use of the cutter.
Dealer’s Signature
Purchaser’s Signature
THIS CHECKLIST TO REMAIN IN OWNER’S MANUAL
It is the responsibility of the dealer to complete the procedures listed
above before delivery of this implement to the customer.
3
Safety Alert Symbol
This Safety Alert Symbol means: “ATTENTION! BECOME ALERT!
YOUR SAFETY IS INVOLVED!”
This symbol is used to call attention to safety
precautions that should be followed by the
operator to avoid accidents. When you see this
symbol, carefully read the message that follows
and heed its advice. Failure to comply with safety precautions could result in death or serious
bodily injury.
Safety Signs
Signal Words
The signal words DANGER, WARNING, AND CAUTION are used on the equipment safety signs. These words
are intended to alert the viewer to the existence and the degree of hazard seriousness.
This signal word indicates a potentially hazardous situation
which, if not avoided, will result in death or serious injury.
White letters on RED
This signal word indicates a potentially hazardous situation
which, if not avoided, could result in death or serious injury
It may also be used to alert against unsafe practices.
Black letters on ORANGE
This signal word indicates a potentially hazardous situation exist
which, if not avoided, may result in minor or moderate injury.
It may also be used to alert against unsafe practices.
Black letters on YELLOW
4
IMPORTANT SAFETY PRECAUTIONS
This symbol is used to call attention to
safety precautions that should be followed by the operator to avoid accidents. When you see this symbol, carefully read the message that follows and
heed its advice. Failure tocomply with
safety precautions could result in serious bodily injury.
In addition to the design and configuration of equipment, hazard control and accident prevention are
dependent upon the awareness, concern, prudence and proper training of personnel in the operation,
transport,maintenance and storage of equipment. Lack of attention to safety can result in accident, per
sonal injury,reduction of efficiency and worst of all—loss of life. Watch for safety hazards and correct deficiencies promptly. Use the following safety precautions as a general guide to safe operations when using
thismachine. Additional safety precautions are used throughout this manual for specific operating and
maintenance procedures. Read this manual and review the safety precautions often until you know the
limitations.
ACCIDENT PATTERNS TO AVOID
1. CONTACT WITH THE ROTATING BLADE - This accident usually happens when the operator is
clearing the discharge chute of grass, (especially when the grass is wet), or when the operator adjusts
the machine without turning it off and waiting for the blades to completely stop.
2. PROPELLED OBJECTS - Sticks, rocks, wires, and other objects can be propelled out through the discharge chute or from under the mower housing. Avoid discharging toward persons and against walls
or obstructions. Material may ricochet toward operator.
3. GRASS DISCHARGE CHUTE - The mower shall not be operated without the grass discharge chute
in its lowered position. Do not mow without grass discharge chute or grass catcher in place.
4. OVERTURNING - This happens when riding mowers are used on steep slopes, embankments or hills.
The operator in these cases can come in contact with blades or sustain injuries during a fall.
5. MOWER RUNNING OVER THE VICTIM - This usually happens when a riding mower is driven in
reverse. The accident victims are most often young children whom, unseen by the operator of the
mower, were in the area being mowed. Before and while backing, look behind and down for small chil
dren.Be alert and turn machine off if a child enters the area.
WE SHARE YOUR DESIRE TO PROTECT YOURSELF, YOUR FAMILY, YOUR FRIENDS AND YOUR
NEIGHBORS FROM ACCIDENTAL INJURY. OBSERVING AND ENFORCING THE FOLLOWING
GUIDE LINES WILL HELP TO INSURE THE SAFETY OF EVERYONE.
SAFETY INSTRUCTIONS AND RECOMMENDATIONS
1. PEOPLE WHO OPERATE, SERVICE, OR ARE OTHERWISE ASSOCIATED with the Zero Turn
Mower should be trained in its proper use and warned of its dangers. Before operating, adjusting,
or servicing the Zero Turn Mower they should read and understand this entire manual and the
engine manual.
2. Do not operqate machine while under the influence of alcohol or drugs.
3. A large percentage of riding mower-related injuries data indicates operators age 60 uears and above
are involved in these accidents. Protect yourself and others from serious injury. Evaluate your ability for
a safe riding mower operation.
4. AVOID CONTACT WITH MOVING PARTS. Keep hands and feet from under mowing deck and
away from blades at all times. Turn engine (motor) off if you must unclog the chute.
5
5. AVOID HILLS AND SLOPES. Use EXTREME caution when mowing and/or turning on slopes as
loss of traction and/or tip-over could occur. Drive slower on slopes. DO NOT mow slopes greater
than 15 degrees. Watch for ditches, holes, rocks, dips and rises, which change the operating
angle. Keep away from drop-offs and steep banks. Avoid sudden starts when mowing uphill - mower
may tip backwards. Loss of traction may occur going downhill - weight transfer to the front wheels may
cause drive wheels to slip and cause loss of braking. DO NOT mow slopes when grass is wet - slippery
conditions affect steering and reduce traction and braking. The operator is responsible for safe opera
tion on slopes.
6. DISENGAGE POWER TO MOWER BEFORE BACKING UP. Do not mow in reverse unless
absolutely necessary and then only after turning around and observing the entire area behind the
mower. Go slowly. Most “running over victim” accidents occur in reverse.
7. BEGINNING OPERATORS SHOULD LEARN HOW TO STEER the Zero Turn Mower before
attempting to mow. Start with slow engine speed and drive without the blades engaged in open
area until comfortable with the machine.
8. KNOW HOW TO STOP QUICKLY. Know the location and operation of every control, especially
how to brake and how to disengage the mower blades.
9. DO NOT MOVE THE CONTROL LEVERS from forward position to reverse position rapidly. The speed
and/or direction of travel is affected instantly by movement of the Control Levers.
10. DO NOT ALLOW CHILDREN TO OPERATE MOWER. Do not allow others who have not had instructions to operate mower.
11. ALWAYS TURN ENGINE OFF AND REMOVE KEY before leaving mower to prevent children and
inexperienced operators from starting the engine. Never leave the mower unattended with engine running. Always wait for all moving parts and all sounds to stop before leaving operator’s seat. Always set
the parking brake on an unattended mower.
12. WEAR STURDY, ROUGH-SOLED WORK SHOES AND CLOSE-FITTING SLACKS AND SHIRTS.
Never operate mower in bare feet, sandals or sneakers.
13. WEAR PERSONAL PROTECTIVE EQUIPMENT such as, but not limited to, protection for eyes, ears,
feet,hands and head when operating or repairing equipment. Do not wear loose clothing or jewelry that
may catch on equipment moving parts.
14. NEVER CARRY PASSENGERS.
15. KNOW THE AREA YOU ARE TO MOW. Watch for hidden dangers such as rocks, roots, sticks, holes,
bumps, and drop-offs, etc. Before mowing, pick up all debris in area to be mowed. Sharp and hard
objects can be propelled at a high speed and can act like shrapnel. Walk through tall grass BEFORE
MOWING to make sure there are no hidden dangers. Mow higher than desired in tall grass to expose
any hidden objects and/or obstacles, clean the area, and then mow to the desired height.
16. BE SURE THE AREA IS CLEAR of other people before mowing. Stop machine if anyone enters the area.
17. Use extreme care when approaching blind corners, shrubs, trees, or other objects that may block your
view of a child.
18. NEVER REFUEL A MOWER INDOORS. Allow the engine time to cool before refueling. Unseen
vapors may be ignited by a spark. Always clean up spilled gasoline. Never run the engine indoors in a
garage or any other closed building. Allow engine to cool before storing in any enclosure. The engine
exhaust and gasoline fumes are dangerous.
19. NEVER REMOVE THE FUEL CAP or add gasoline to a running or hot engine or an engine that has
not been allowed to cool for several minutes after running. Always make sure the gas cap is in place.
20. DO NOT SMOKE AROUND THE MOWER or the gasoline storage container. Gasoline fumes can
easily ignite.
6
21. Use only an approved gasoline container.
22. Avoid fire from static sparks. Never fill gasoline containers inside a vehicle or on a truck or trailer bed
with a plastic liner. Always place fuel containers on the ground away from your vehicle before filling.
23 Avoid fire from static sparks. Remove mower from truck bed or trailer and refuel it on the ground. Only
use an approved gasoline container and not the gasoline dispenser to refuel when the mower remains
on trailer or truckbed.
24. Avoid fire from static sparks. During refueling, keep nozzle in contact with fuel tank or fuel container opening at all times. Avoid over filling, do not use nozzle lock-open device.
25. KEEP GASOLINE IN A WELL-VENTILATED AREA away from your living quarters and in tightly
capped safety cans. Never store mower with gasoline in the tank inside a building where fumes may
reach open flame or spark.
26. DISENGAGE BLADES, STOP ENGINE, ENGAGE PARKING BRAKE AND REMOVE IGNITION KEY
before any servicing. Be sure all moving parts and all sounds have stopped. Let engine cool and disconnect the spark plugs so the engine cannot start by accident.
27. KEEP ALL NUTS, BOLTS, AND SCREWS TIGHT to be sure equipment is in safe working
condition,especially blade bolts.
28. VEHICLE SHOULD BE STOPPED AND INSPECTED FOR DAMAGE after striking a foreign object and
the damage should be repaired before restarting and operating the equipment. Stop immediately and
check for damage or loose parts if mower should start vibrating.
29. DISENGAGE BLADES BEFORE DRIVING ACROSS WALKS or projecting objects.
30. KEEP SAFETY DEVICES AND GUARDS IN PLACE. If any of the safety switches become inoperable,
have them repaired immediately.
31. DO NOT STEP OR STAND ON THE MOWER HOUSING. Step or stand only on the tread areas on the deck.
32. WATCH OUT FOR TRAFFIC near roadways and when crossing roads.
33. THIS MACHINE IS NOT MEANT FOR HIGHWAY OR STREET USE. It is not a recreational vehicle and
it should not be operated as such.
34. DO NOT USE MOWER WHEN GRASS IS WET OR SLIPPERY.
35. MOW ONLY DURING DAYLIGHT unless ZT is equipped with optional working lights kit.
36. ALWAYS DISENGAGE THE MOWER BLADE CLUTCH when transporting.
7
SECTION I
INTRODUCTION AND DESCRIPTION
INTRODUCTION
ability is needed. The unit consists of either a 17 hp
Briggs & Stratton single, 18 hp Briggs & Stratton
twin, 20 hp Kohler twin or a 20 hp Honda twin
engine. The engine has a pressurized oil lubrication
system with spin-on type filter, fused electronic ignition,
electric start and a 6.5 gallon fuel system.
We are pleased to have you as a Bush Hog customer. Your Bush Hog Estate Series ZT Rider has
been carefully designed to give maximum service
with minimum down time. This manual is provided to
give you the necessary operating and maintenance
instructions for keeping your mower in top operating
condition. Please read this manual thoroughly.
Understand what each control is for and how to use
it. Observe all safety precautions decaled on the
machine and noted throughout the manual for safe
operation of the implement. If any assistance or
additional information is needed, contact your authorized Bush Hog dealer.
Two Zero Turn hydrostatic transaxles are used for
propelling and steering. The pumps are belt driven
by the engine output shaft. One lever for each drive
controls both speed and direction. This independent
control of each drive wheel coupled with continuously variable speed selection gives the Zero Turn
mower exceptional maneuverability.
NOTE:
All references made to right, left, front, rear, top or
bottom is as viewed facing the direction of forward
travel.
The mower deck is driven by a v-belt from the
engine. An electro magnetic clutch is used to
engage/disengage the PTO.
The mower attachment is available in 44” or 52” cutting widths. The mower has three uplift blades, driven by a single V-belt controlled by a spring loaded
tensioner.
DESCRIPTION
The Estate ZT is intended for use on large lawns
and other frequently maintained areas where a
smooth, even cut is desired and superior maneuver8
CONTROLS
CONTROL LOCATIONS
OPERATOR INTERLOCK SYSTEM
① Ignition Key - On right hand control console.
Your Bush Hog Zero Turn Rider is equipped with an
Operator Interlock System that is designed to help
prevent possible serious injuries. Understanding and
maintaining this system is vital for safe operation.
② Engine Throttle - On right hand control console.
To Start Engine:
1. Blades (PTO) must be disengaged.
2. Control levers in neutral (swung out).
3. Parking brake on.
4. Operator in seat.
The Engine Will Kill If:
1. The operator leaves the seat with:
a. The control levers out of neutral (swung in).
b. The blades are engaged.
c. The parking brake is off.
d. All of the above.
2. The park brake is on before the control levers
are in neutral (swung out).
④ PTO Clutch Switch - On right hand control
③ Two Steering/Speed Control Levers - In front of
seat at side. (Shown on page 20)
console.
⑤ Parking Brake Lever - On left side of operator.
(Shown on page 12)
⑥ Blade Height Adjust Pin - Right side of deck.
(Shown on page 11)
⑦ Choke - On right hand control console.
⑧ Hydrostatic Transaxle Bypass Valve - Right
hand and left hand sides at rear of unit. (Shown
on page 12)
⑨ Hour Meter/Service Minder - On right hand control console.
DO NOT OPERATE MOWER IF SAFETY SWITCHES ARE NOT OPERATING PROPERLY.
➉ Warning Light - On right hand control console
for engine oil pressure.
②
WARNING
①
DO NOT OPERATE MACHINE UNLESS
INTERLOCK SYSTEM FUNCTIONS PROPERLY. FAILURE TO HEED THIS WARNING
MAY RESULT IN SERIOUS INJURY, DEATH
OR EQUIPMENT DAMAGE.
➉
⑦
④
⑨
TRACTOR SPECIFICATIONS
Width - (For 44” Deck) . . . . . . . . . . . . . . . . . . . . . . . . . 42”
(For 52” Deck) . . . . . . . . . . . . . . . . . . . . . . . . . 44”
Height - To top of seat back (Standard Seat) . . . . . . . 44”
(Suspension Seat) . . . . . 48”
Fuel Capacity (In Twin Tanks) . . . . . . . . . . . . . 6.5 gallons
DECK SPECIFICATIONS
Hydrostatic Transaxles - All Models. . . . . . . . . (2) HydroGear C-IZT
ITEM
Cutting width
Engines - 17 hp Briggs & Stratton Intek
18 hp Briggs & Stratton Intek Twin
20 hp Kohler Command Twin
20 hp Honda GXV620 Twin
44”
52”
Cutting Height ------ 1-1/2” to 4-1/2” in 1/4” increments
Blades
15”
18”
Overall width
with chute down
55”
64”
Material thickness - Deck -------------10 GA.-----------------
Tires - All Models - Front . . . . . . . . . . . . . . . . 11 x 4.0 - 5
Drive . . . . . . . . . . . . 18 x 8.5 - 8 (44”)
18 x 9.5 - 8 (52”)
Spindle bearings ----------------------25 mm------------------
9
SECTION II
OPERATION
GENERAL SAFETY
3. Do not mix oil with gasoline.
Only qualified people familiar with this operator’s
manual should operate this machine. Operator
should wear hard hat, safety glasses, and safety
shoes. Avoid loose fitting clothing or jewelry. The
operator should read, understand and practice all
safety messages shown on the caution, warning and
danger decals affixed to the machine to avoid serious injury or death. Before beginning operation, clear
work area of any objects that may be picked up and
thrown by mower. Check for ditches, stumps, holes
or other obstacles that could upset power unit or
damage mower. Always push steering levers apart,
set parking brake, disengage PTO, turn off engine,
and allow blades to come to a complete stop before
leaving operator’s seat. Do not operate without all
shields in place and in good condition.
4. Do not use white, high test or premium gasoline. Do not use de-icers, carburetor cleaners
or othersuch additives.
5. Check the crankcase oil level. Make sure the
engine is off. The mower should be parked on a
level area. Do not overfill. (See your engine
manual for more detailed instructions.)
6. Check the hydrostatic transaxles oil level. (See
“Maintenance” section of this manual.)
7. Check battery fluid level.
8. Inspect V-belts
9. Check tire pressure: Front& Drive Tires 9 - 12 psi
10. Make sure underside of mower deck is free of
grass.
11. Make sure mower blades are sharp and secured
tightly.
PRE-OPERATION CHECKLIST
1. Make sure fuel tanks are full. Use regular unleaded
gasoline. See engine manual for more details.
12. Clean the air intake screen on the engine if
necessary.
WARNING
13. Perform any other maintenance as it becomes
necessary. (See “Maintenance” section)
AVOID SERIOUS INJURY OR DEATH:
GASOLINE IS EXTREMELY FLAMMABLE AND
EXPLOSIVE UNDER CERTAIN CONDITIONS.
● REFUEL IN A WELL VENTILATED AREA WITH
ENGINE STOPPED.
● DO NOT SMOKE OR ALLOW FLAMES OR
SPARKS IN THE REFUELING AREA OR
WHERE GASOLINE IS BEING STORED.
● DO NOT OVERFILL FUEL TANK. AFTER
REFUELING, MAKE CERTAIN THE TANK CAP
IS CLOSED PROPERLY AND SECURELY.
● BE CAREFUL NOT TO SPILL FUEL WHEN
REFUELING. FUEL VAPOR OR SPILLED FUEL
MAY IGNITE. IF ANY FUEL IS SPILLED, MAKE
SURE THE AREA IS DRY BEFORE STARTING
THE ENGINE.
● KEEP OUT OF REACH OF CHILDREN
AVOID FUEL FIRES BY STATIC ELECTRICITY SPARKS:
● USE ONLY AN APPROVED GASOLINE CONTAINER
● NEVER FILL GASOLINE CONTAINERS INSIDE A
VEHICLE OR ON A TRUCK OR TRAILER BED WITH A
PLASTIC LINER. ALWAYS PLACE FUEL CONTAINERS ON THE GROUND AWAY FROM YOUR VEHICLE
BEFORE FILLING.
● REMOVE MOWER FROM TRUCK BED OR TRAILER
AND REFUEL IT ON THE GROUND. ONLY USE AN
APPROVED GASOLINE CONTAINER AND NOT THE
GASOLINE DISPENSER TO REFUEL WHEN MOWER
REMAINS ON TRAILER OR TRUCK BED.
● DURING REFUELING, KEEP NOZZLE IN CONTACT
WITH FUEL TANK OR FUEL CONTAINER OPENING
AT ALL TIMES. AVOID OVER FILLING, DO NOT USE
NOZZLE LOCK-OPEN DEVICE.
14. Check parking brake operation by disengaging
hydrostatic transaxles (freewheeling position),
and placing the brake lever in the “on” position.
Attempt to rock tractor by hand. Both drive wheels
should be locked. When the brake handle is in the
“off” position, both drive wheels should turn freely.
If there is a problem in either position, refer to
adjustment procedure in the maintenance section.
WARNING
ENGINE EXHAUST GASES CONTAIN
POISONOUS CARBON MONOXIDE.
● NEVER RUN ENGINE IN A CLOSED BUILDING
OR CONFINED AREA.
● AVOID INHALING EXHAUST GASES.
OPERATION
1. OPEN FUEL SHUT-OFF VALVE left or right
tank.
2. MOVE CONTROL LEVERS TO neutral “OUT”
position by pushing each one straight sideways.
3. SET PARKING BRAKE. Pull upward to set, locking out in notch.
4. DISENGAGE MOWER BLADE CLUTCH by
moving clutch switch to “OFF” (down) position.
5. SET ENGINE CHOKE CONTROL for cold starts
to full up position.
2. Make sure dirt and foreign matter are kept out of
fuel tank. Use a clean funnel and fuel can.
6. SET ENGINE THROTTLE TO 1/2 throttle.
10
7. TURN IGNITION KEY to “START” position and
release to “RUN” as soon as engine starts.
NOTE: Prolonged cranking will damage starter
motor and shorten the battery life.
ANTI-SCALP ROLLER ADJUSTMENT:
1. Stop engine and move the control levers to the
neutral position and engage the parking brake.
2. Disengage the blades.
3. The Anti-Scalp deck rollers are adjustable up and
down to provide improved deck flotation and scalping
protection at various cutting heights. They are not
intended to ride continously on the ground. Rollers
should always be 1” - 2” below blade level, but no closer
than 1/2” from ground. DO NOT adjust rollers to support
deck.
4. Front Anti-Scalp rollers brackets are removable.
8. ADJUST ENGINE THROTTLE AND CHOKE for
desired engine smoothness and speed. NOTE:
When mowing, always run engine at full throttle.
9. RELEASE PARKING BRAKE. Push brake lever
downward to release.
CAUTION
If the operator is inexperienced with the zero
turning radius lever steering/speed control,
he/she should follow these recommendations:
Disengage the mower blades. Go very slowly
until thoroughly familiar with the machine. Keep
away from fences, buildings, and other obstructions. While becoming familiar with the machine,
move the Control Levers smoothly and slowly.
Practice until operation is smooth and efficient.
CUTTING HEIGHT ADJUSTMENT
10. TO DRIVE: Adjust seat forward or backward for
operator comfort. Move the Control Levers to the
“IN” position. Move Control Levers forward to
move forward. Move levers slowly forward to
increase speed. To reverse direction, move the
Control Levers slowly rearward. To turn on a zero
radius axis, go slowly and pull one Control Lever
back and push the other Control Lever forward,
depending on which direction you wish to turn.
13. ENGAGE MOWER BLADES by pulling
up on the PTO clutch switch. The engine will not
start if the PTO switch is engaged. If the engine
is running while the PTO clutch is engaged and
the operator leaves the seat, the engine will stop.
WARNING
Use EXTREME caution when mowing
and/or turning on slopes as loss of traction
and/or tip-over could occur. Drive slower
on slopes. DO NOT mow slopes greater
than 15 degrees. Watch for ditches, holes,
rocks, dips and rises, which change the
operating angle. Keep away from drop-offs
and steep banks. Avoid sudden starts when
mowing uphill - mower may tip backwards.
Loss of traction may occur going downhill weight transfer to the front wheels may
cause drive wheels to slip and cause loss
of braking. DO NOT mow slopes when
grass is wet - slippery conditions affect
steering and reduce traction and braking.
The operator is responsible for safe
OPERATION ON SLOPES.
WARNING
AVOID SERIOUS INJURY OR DEATH:
DO NOT MOVE STEERING LEVERS FROM
FORWARD TO REVERSE OR REVERSE TO
FORWARD POSITION RAPIDLY. A SUDDEN
CHANGE IN DIRECTION MAY CAUSE LOSS OF
CONTROL AND/OR DAMAGE TO EQUIPMENT.
FOR SMOOTH, SAFE OPERATION, MOVE THE
CONTROL LEVERS IN A GENTLE, SLOW
MOTION, ESPECIALLY ON GRADES.
11. BRAKING: To brake mower, gently move
Control Levers in the direction opposite to travel.
If the parking brake is engaged with the Control
Levers in the “IN” position the engine will stop.
12. CUTTING HEIGHT ADJUSTMENT:
1. Stop engine and move the control levers to the
neutral position and engage the parking brake.
2. Disengage the blades.
3. Depress the deck lift foot pedal raising the
deck to the transport position and place the pedal in
the locked position.
4. Insert height adjustment pin into the hole corresponding to the desired cutting height. See decal
on the top of the deck lift plate.
5. Depress the deck lift pedal and lower the deck to
the selected mowing height.
6. To transport, depress the lift foot pedal and lock in
position, then move the height adjustment pin to the
4-1/2”position.
14. TO STOP:
.
11
A.
Slow engine speed with throttle to slowest
position
B.
Disengage the mower blade clutch by moving the PTO clutch switch to the “OFF” position.
C.
Move Control Levers to neutral position and
then to the “OUT” position.
D.
Set the parking brake.
E.
Turn ignition key to “OFF” position.
F. Remove the key and wait for all movement
and all sound to cease before dismounting.
MOWING RECOMMENDATIONS
1. Keep mower blades sharp.
WARNING
2. Make sure deck and discharge chute are clean.
AVOID SERIOUS INJURIES TO OTHERS:
ALWAYS REMOVE THE KEY FROM THE IGNITION SWITCH WHENEVER THE MOWER IS
UNATTENDED TO PREVENT CHILDREN OR
UNAUTHORIZED PERSONS FROM STARTING
THE ENGINE.
WARNING
TO AVOID SERIOUS INJURY FROM BLADE
CONTACT, POWER MUST BE OFF TO
CLEAN DISCHARGE CHUTE
15. HYDRAULIC COMPONENTS BYPASS-TO
MOVE THE TRACTOR WITHOUT POWER: The
bypass levers are located on the rear of the
engine plate. NOTE: Exhaust muffler can be
extremely hot. Use extreme caution when
engaging or disengaging bypass levers to
prevent severe burns. Pull both the RH & LH
levers to the rear and lock out in the keyway
slot to disengage for freewheeling. Reverse
this procedure for operation.
DANGER
KEEP HANDS AND FEET AWAY FROM
UNDERNEATH MOWER TO AVOID SERIOUS
INJURY OR DEATH.
Electrical Fuses
WARNING
ROTARY MOWERS CAN DISCHARGE
OBJECTS AT HIGH SPEEDS. TO AVOID SERIOUS INJURIES OR DEATH:
● OPERATE ONLY WITH SIDE BANDS IN
GOOD REPAIR AND CHUTE OR GRASS
CATCHER ATTACHMENT INSTALLED.
● KEEP
CHILDREN,
PETS,
AND
BYSTANDERS AWAY FROM THE WORK
AREA.
● DO NOT OPERATE MOWER IN THE VICINITY OF OTHER PERSONS.
● DISCHARGE AWAY FROM BUILDINGS,
WALLS OR OTHER STRUCTURES.
Engine Oil
Drain Plug
Left Hand Bypass Lever
NOTE: To move the tractor without power, the pumps
must be unlocked and in the free wheel position.
Failure to do so could possibly damage the hydraulic
components. Never pull at more than 2 MPH.
Fuel Shut-Off Valve Handle
16. FUEL SHUT-OFF VALVE: Located on the front
panel below the operator is the fuel directional
valve. This valve has three positions for operations and each position is made in 1/4 turn increments. This directional valve has a shut off position and can be used when the machine will not
be used for a few days or when the unit is transported to and from a work site.
Fuel Flow
Off
Right Tank
Left Tank
Valve Position
Down
Right
Left
12
Parking Brake Handle
SECTION III
MAINTENANCE
CAUTION
BEFORE PERFORMING ANY MAINTENANCE, TURN OFF ENGINE, REMOVE KEY AND DISCONNECT SPARK
PLUGS. USE EXTREME CARE WHEN WORKING ON MACHINERY. DO NOT WEAR WATCH OR JEWELRY. DO
NOT WEAR LOOSE FITTING CLOTHES, AND OBSERVE ALL COMMON SAFETY PRACTICES WITH TOOLS.
IMPORTANT:
BEFORE PERFORMING ANY SERVICE, MAINTENANCE OR REPAIR ON THE ENGINE, REFER TO THE
RESPECTIVE ENGINE MANUFACTURERS’ MANUAL FOR SPECIFIC INFORMATION CONCERNING YOUR
PARTICULAR BRAND OF ENGINE.
MAINTENANCE SCHEDULE
SERVICE
WHEN
Check crankcase oil level_______________________________________________________before each use
Check air intake screen__________________________________________________________after each use
Clean grass from under deck _____________________________________________________after each use
Check tire pressure ____________________________________________________________every 10 hours
Sharpen mower blades _________________________________________________________every 10 hours
Clean air filter element ___________________________________________________________every 8 hours
Check 20W50 motor oil
in hydrostatic system __________________________________________________________every 100 hours
Check drive belts ______________________________________________________________every 50 hours
(20 hr break-in)
Grease blade spindles __________________________________________________________every 50 hours
Change engine
(Refer to engine
crankcase oil __________________________________________________________________mfg. manual)
Change engine oil filter______________________________________________(Refer to engine mfg. manual)
Change hydrostatic oil filter (See your Bush Hog Dealer)
Important: Substitution of an improper filter will cause
every 200 hours
hydrostatic failure which will not be covered under warranty_____________________(50 hrs break-in)
Replace air
filter element______________________________________________________(Refer to engine mfg. manual)
Check spark plugs _________________________________________________(Refer to engine mfg. manual)
Service battery___________________________________________________________annually or 500 hours
Change hydrostatic oil _________________________________________________________every 200 hours
Perform these maintenance procedures more frequently under extremely dusty, dirty conditions.
Replace decals when illegible. Write parts dept. for free replacement.
13
3. TIRES:
Correct tire pressure is essential for efficient
operation of the mower. Incorrect inflation
pressure will affect riding comfort, traction and
cutting quality. Check tire air pressure periodically with a low pressure gauge.. Inflate tires to
the pressure listed:
1. ENGINE:
For complete maintenance and operating information for your engine, please refer to your
engine operating and maintenance instructions
furnished by the engine manufacturer and included in your Zero Turn mower information packet.
NOTE
Air intake screen must be kept clean. If
plugged, engine may be seriously damaged by over heating.
TIRE PRESSURE: Front & Rear Tires 9 -12 psi
Lug nuts should be checked regularly for tightness. Torque lug nuts to 59 ft. / lbs.
The hour meter includes a feature to remind
the owner to change engine oil and oil filter at
recommended hour intervals. The service
intervals are indicated by the respective flashing “SVC” lights on the display. Service indicators last for (2) hours starting (1) hour
before and ending (1) hour after the interval.
4. MOWER BLADES:
Check sharpness of mower blades after every 10
hours of operation. To sharpen blades proceed as
follows:
The left “SVC” light flashes at first interval of
(5) hours, second interval (25) hours , then
every (25) hours thereafter. The right “SVC”
light flashes at every (100) hour interval.
Refer to your engine manual to determine
which “SVC” indicator coincides with their service recommendation.
WHEN IT IS NECESSARY TO RAISE THE
DECK OR MOWER FOR SERVICE OR
MAINTENANCE, TO AVOID SERIOUS
INJURY OR DEATH, STOP ENGINE, SET
PARKING BRAKE, REMOVE IGNITION KEY
AND SPARK PLUG WIRES AND SECURELY SUPPORT THE DECK OR MOWER
BEFORE WORKING UNDERNEATH.
WARNING
2. BATTERY:
A. Lift deck and secure in raised position.
B. Remove bolt, cup washer, and blade from shaft.
C Blades should be discarded when worn excessively. See sketch.
WARNING
AVOID SERIOUS INJURY OR DEATH:
● THE BATTERY CONTAINS SULFURIC ACID.
AVOID CONTACT WITH SKIN, EYES OR CLOTHING.
EYES - FLUSH WITH WATER AND GET PROMPT MEDICAL ATTENTION.
ANTIDOTE: INTERNAL - DRINK LARGE QUANTITIES
OF WATER OR MILK. FOLLOW WITH MILK OF MAGNESIA, BEATEN EGG OR VEGETABLE OIL. CALL A
PHYSICIAN IMMEDIATELY.
● BATTERIES PRODUCE EXPLOSIVE GASES.
KEEP SPARKS, FLAMES AND SMOKING MATERIALS AWAY. VENTILATE WHEN CHARGING IN AN
ENCLOSED SPACE. WEAR EYE PROTECTION
WHEN WORKING NEAR BATTERIES.
● KEEP OUT OF REACH OF CHILDREN.
New Blade
25 Degrees
When Notch Starts
Discard Blade
Dangerous!
D. Sharpen blade with a hand file, electric grinder
or blade sharpener. Wear gloves and eye protection
when sharpening. Grind blade at original bevel.
E. Check balance of blade by positioning the blade
on a nail or blade balance pedestal. Grind the blade
on the end that is heavier until both sides balance.
F. Install blades with the concave side of the cup
washer against blade. Be sure blades are installed
with uplifts and cutting edges in the proper directions.
Tighten retaining bolt to 76 ft./lbs.
When taking the battery out of the mower for ser
vicing, make sure to reconnect the cables to the
battery exactly as they were prior to removal.
Keep the battery clean. Remove the corrosion
around the battery terminals by applying a solution of one part baking soda to four parts water.
Coat all exposed terminal surfaces with a light
layer of grease or petroleum jell to prevent corrosion.
NOTE
At temperatures below 32 degrees F (0 deg
C) the full charge state must be maintained to
prevent cell electrolyte from freezing and
causing permanent battery damage.
WARNING
WHEN IT IS NECESSARY TO RAISE THE
DECK OR MOWER FOR SERVICE OR
MAINTENANCE, TO AVOID SERIOUS
INJURY OR DEATH, STOP ENGINE, SET
PARKING BRAKE, REMOVE IGNITION KEY
AND SPARK PLUG WIRES AND SECURELY SUPPORT THE DECK OR MOWER
BEFORE WORKING UNDERNEATH.
14
7. When both wheels remain in neutral, tighten the
jam nuts to lock the vertical turnbuckle in place.
5. CLEANING GRASS BUILD UP UNDER DECK
Depress the deck lift foot pedal and lock in position,
then move the height adjustment pin to the 4-1/2”
position.
8. Test again by moving the control levers forward
and backward before returning them to the neutral position. If the tires are in neutral, the unit is
now ready for operation.
Lift the front of the unit and support unit securely.
NEUTRAL ADJUSTMENT
9. Shut the unit off. Remove the jumper wire from
the wiring harness and replace the connectors
into the seat switch. Never operate the mower
unless all safety switches are operating properly.
1. Stop engine and remove ignition key.
CONTROL LEVER ADJUSTMENT
2. Tilt seat forward.
The control levers can be adjusted for operator comfort. Loosen the hex head cap screws that attach
the upper control lever to the lower control lever.
The upper control lever can be pivoted to fit the
operator’s personal preference. The control levers
should be adjusted so they align with each other
when in the neutral position. The upper levers can
also be adjusted vertically for operator comfort.
Note: The upper control levers were shipped in the
highest position from the factory to allow for optional
seats with armrests. If your unit does not have seat
armrests, and you would prefer a lower height, then
remove the hex head screws from each upper handle and lower to the lower position. Reinstall hardware and securely tighten.
Clean out any grass build up from underside of deck
and in deck discharge chute.
3. Move the control lever rearward and release the
control lever. This control lever should return to a
position where the control lever can be swung
outward and lock in the neutral outward position.
This setting is fixed and not adjustable. If the
handles do not return to neutral, contact a
servicing dealer.
MOTION CONTROL NEUTRAL ADJUSTMENT
The steering has been factory adjusted to eliminate
creeping when the control levers are in neutral position. However, should the mower begin to creep,
adjustments can be made as outlined below. Before
considering any adjustment, check the tire pressure
and make certain hydraulic system oil is at operating
temperature. Unequal tire pressure can cause the
mower to drift to one side ( see recommended tire
pressure).
1. Raise the drive wheels of the zero turn off the
ground. Safely block the frame in this position so
it is secure. This adjustment must be made with
the drive wheels free to turn.
2. Remove the electrical connection from the seat
switch and temporarily install a jumper wire
across the terminals of the wiring harness.
Control Lever
CAUTION
TO AVOID POSSIBLE INJURY:
WHEN ADJUSTING VERTICAL TURNBUCKLE, KEEP HANDS AND TOOLS
CLEAR OF SPINNING FAN BLADES.
Pivot Bolt
(3/8 x 1-1/2” w/Locknut)
3. Loosen the jamnuts on the vertical turnbuckles,
which connect the lever control arms to the
hydrostatic component control arms. Note: The
nuts at the top of the turnbuckles have lefthanded threads.
Slotted Hole and Adjusting Bolt
(3/8 x 1-1/2” w/Flatwasher
and Locknut)
4. Start the engine. Release the parking brake and
throttle up the engine to full throttle.
5. Observe which direction the wheels are rotating.
If the wheels are rotating forward, rotate the vertical turnbuckle clockwise to shorten the steering
control linkage until the wheel(s) come to a stop.
Repeat for the opposite side if necessary.
(Note: The right hand linkage controls the right
hydrostatic component and the left handle controls the left hydrostatic component)
Cooling Fan
6. If the wheels are rotating in reverse, then rotate
the vertical turnbuckle counter-clockwise to
lengthen the steering control linkage until the
wheel(s) come to a stop. Repeat for the opposite
side if necessary.
Vertical
Turnbuckle
Hydrostatic
Transaxle
15
DECK BELT ADJUSTMENT
LEVELING THE DECK AND SETTING THE
COUNTERBALANCE SPRING TENSION
Belt adjustment should be checked every (50) hours
of operation to get maximum life and cutting performance. Belt tension is adjusted by increasing or
decreasing the length of the spring on the movable
idler by adjusting the eye bolt length (Shown below).
For correct belt tension, adjust the spring length to 67/8” for the 44” deck and 7-1/2” for the 52” deck.
1. Set all tire pressures to the correct specifications.
2. Rest machine on a level slab of concrete.
3. Depress the deck lift pedal to raise the deck to the
full lift height position and move the height adjust
pin to the 4.5” position.
4. Take all the force off the two deck lift springs by
loosening the nut at the front of each spring.
5. Place a level on the deck, from front to rear. If the
level is too short to reach all the way from front to
rear, lay a straight edge on the deck first, then
place the level on the straight edge.
6. Lay a .12” spacer beneath the front level. this will
automatically set the rear of the deck higher than
the front.
7. Adjust the nuts at the rear trunnion forward to
raise the rear of the deck (Shown below) until the
level’s bubble is centered. Repeat for the other side.
8. Check to verify the deck is leveled side-to-side. To
do this, lay a 2” x 4” x 30” piece of wood under
each side of the deck and lower the deck to rest
freely on the top of these boards. Inspect the (4)
lift chains to see if tension is on each of them. If
any of the chains appear slack, loosen the cam
bushing bolt just enough to allow the cam bushing
to be turned to remove the slack from the chain.
Tighten the cam bushing bolt to 76 ft.lbs.
9. Raise the deck up to the transport position and
lock in place.
10. Remove the 2” x 4”s from under the deck.
11. Tighten each of the counterbalance spring nuts
until springs are to the following lengths.
44” Deck - Spring length of 16.5”
52” Deck - Spring length of 16.0”
The springs may be tightened or loosened from
this point according to personal preference.
DECK BELT REPLACEMENT
(NOTE: Use only genuine Bush Hog
replacement parts)
1. Remove the R.H. and L.H. deck shield assemblies
(Fig. ).
2. Relieve the spring tension by loosening the two
5/16” hex nuts on the spring adjustment eye bolt.
3. Remove the old belt.
4. Install the new belt being sure the belt is properly
routed and positioned in all sheave grooves.
5. Adjust tension on the belt by adjusting the length
of the spring on the idler (See Deck Belt
Adjustment section).
6. Replace the deck shield assemblies.
DECK BELT DIAGRAM
Spring Length
44” Deck - 6-7/8”, 52” Deck - 7-1/2”
Eye Bolt Adjustment
Rear Trunnion
Spring Loaded Idler
Level on
Mower Deck
Height
Adjustment Pin
Deck
Lift Pedal
.12” Spacer
At Front End
WARNING
Upper
Chain Fastener
Deck
Shield
Deck
TO AVOID SERIOUS BURN INJURIES:
● ALLOW ENGINE, OIL AND HYDRAULIC FLUIDS TO COOL BEFORE SERVICING TRANSMISSION OR ENGINE SYSTEM
CAUTION
TO AVOID CLEANING SOLVENT FIRES:
● AVOID USING FLAMMABLE SOLVENTS.
● AVOID AREAS WITH IGNITION SOURCES
WHEN USING FLAMMABLE SOLVENTS.
Deck Lift Spring
Adjustment Nut
16
HYDROSTATIC BELT DIAGRAM
Spring Support Bolt
Spring Loaded
Adjustment
Idler
HYDROSTATIC TRANSAXLE BELT
TENSION ADJUSTMENT
1. Stop engine and remove key.
2. The hydrostatic transaxle belt tension is
adjusted through a spring loaded idler pulley.
3. The tension can be adjusted by loosening the (2)
hex nuts on the end of the spring support bolt
and turning them until the spring length is 37/16” (Shown at right). Tighten the jam nuts together.
HYDROSTATIC TRANSAXLE (MOTION
DRIVE) BELT REPLACEMENT
Spring
Length
3-7/16”
1. Stop engine and remove key.
2. Relieve the belt tension on the drive belt (See
Belt Adjustment section) and drop the belt from
the electric clutch deck pulley at the rear of the
unit.
3. Remove the electric clutch anti-rotation bracket
at the rear of the unit.
4. Relieve the spring tension on the motion drive
belt by loosening the (2) hex jam nuts on the end
of the spring support bolt.
5. Remove the old belt.
6. Install the new belt being sure the belt is properly
routed and positioned in all sheave grooves.
7. Adjust tension on the belt by adjusting the length
of the spring on the idler (See Belt Adjustment
section).
8. Reinstall the electric clutch anti-rotation bracket,
the deck belt and re-tension the deck belt (See
Deck Belt Adjustment section).
Clutch Anti-rotation
Bracket
be changed after the first 50 hours of break-in, then
every 200 hours thereafter. The fluid and filter should
be changed and the system cleaned if the fluid
becomes contaminated with foreign matter (water,
dirt, etc.).
FLUID VOLUME AND LEVEL
Certain situations may require additional fluid to be
added or even replaced. Refer to the Figure below
for the proper fill port location. 79 fl. oz. is the correct
amount of fluid to add to an empty transaxle.
The level of fluid in the transaxle may be checked by
removing the plastic breather tube and inserting a
clean, straight metal rod down through the fill port
until it bottoms out. Remove the rod and the oil
should extend approximately 4-1/4” up the rod.
WARNING
HIGH PRESSURE HYDRAULIC FLUID LEAKS
CAN PENETRATE SKIN CAUSING SERIOUS
INJURY AND GANGRENE.
INJECTED FLUID MUST BE SURGICALLY
REMOVED WITHIN A FEW HOURS BY A DOCTOR FAMILIAR WITH THIS TYPE OF INJURY.
IMPORTANT
Do Not Overfill
If you overfill the transaxle while the unit is
“cold”, it may overflow as it reaches normal
operating temperatures. The oil level should not
be above the manufacturer’s suggestions outlined in this manual. This will allow the space
needed for the oil to expand as it warms up.
TO AVOID SERIOUS INJURY FROM
PRESSURE LEAKS:
● USE CARDBOARD AND NOT HANDS TO
SEARCH FOR LEAKS.
● RELIEVE HYDRAULIC PRESSURE BEFORE
WORKING ON SYSTEM.
● CHECK HYDRAULIC HOSES, LINES, AND
CONNECTIONS FOR TIGHTNESS AND
GOOD CONDITION BEFORE APPLYING
SYSTEM PRESSURE.
Recheck the fluid level once the unit has been operated for approximately one minute.
FLUID CHANGE
START-UP MAINTENANCE
In the event of oil contamination or degradation, oil
addition or change may alleviate certain performance problems. It is essential that the unit exterior
be free of debris prior to fluid maintenance.
Bush Hog recommends the use of SAE 20W50
motor oil in the hydrostatic reservoir.
HYDROSTATIC TRANSAXLE MAINTENANCE
Remove the oil drain plug from the bottom of the unit
to facilitate oil change. When reinstalling oil drain
plug torque the plug to 180 - 240 in. lbs.
The hydrostatic transaxle units normally do not
require regular fluid changes. The system filter should
17
Fill Port - Insert rod through this port
to check fluid level.
Void Air Space - 1-78”
Correct Fluid Level - 4-1/4”
IMPORTANT
When tightening the filter insure proper torque
value of 20 - 50 in. lbs. is applied. Filter is plastic. Excessive torque will damage filter.
the oil level, and add oil as required after stopping
engine.
3. It may be necessary to repeat Steps 1 and 2
until all the air is completely purged from the system.
When the transaxle moves forward and reverse at
normal speed, purging is complete.
Due to the effects air has on eficiency in the hydrostatic drive applications, it is critical that it be purged
from the system.
These purge procedures should be implemented
any time a hydrostatic system has been opened to
facilitate maintenance or any additional oil has been
added to the system.
PARKING BRAKE ADJUSTMENT
The parking brake has been set correctly from the
factory. Occasionally check the parking brakes and
adjustment using the following method:
Air creates inefficiency because its compression and
expansion rate is higher than that of the oil normally
approved for use in hydrostatic drive systems.
The resulting symptoms in hydrostatic systems may be:
!. Noisy operation.
2. Lack of power or drive after short term operation.
3. High operation temperature and excessive expansion of oil.
Before starting, make sure the transaxle/ transmission is at the proper oil level. If it is not, fill to the
specifications outlined above.
1.
Position the control levers in the neutral position.
2.
Disengage the hydrostatic transaxle by
pulling out and locking the bypass levers.
3.
Move the parking brake lever to the brake position.
4.
The brake pawl should now be activated and
engaging the hydrostatic components brake
gear.
5.
Move the parking brake lever down to disengage the brake. Standing behind the unit, the
mower should be able to be pushed around
freely.
6.
If the brakes do not operate correctly, the cable
must be adjusted. To adjust the brake cables,
loosen the two locknuts on the spring end of
the cables, just to the inside of each of the rear
tires. Adjust the cables up or down the threaded adjustment until the brake pawl is fully
engaging the brake gear when the brake is
engaged and the spring is slightly extended
and the brake pawl is fully disengaging the
brake gear when the brake lever is disengaged.
7.
Tighten the locknuts securely.
PURGING PROCEDURES
The following procedure should be performed with
the vehicle wheels off the ground, then repeated
under normal operating conditions.
1. With the bypass valve open and the engine running, slowly move the directional control in both forward and reverse directions 5 or 6 times. As air is
purged from the unit, the oil level will drop.
2. With the bypass valve closed and the engine
running, slowly move the directional control in both
forward and reverse directions (5 to 6 times). Check
18
TROUBLESHOOTING CHECK LIST
1. ENGINE IDLES POORLY:
Carburetor maladjustment_________________________________________________readjust carburetor
Improper spark plug gap _______________________________________________check and re-gap plug
2. ENGINE BACKFIRES:
Carburetor maladjustment_________________________________________________readjust carburetor
3. ENGINE RUNS BUT POWER UNIT WON’T MOVE FORWARD
Drive belt loose or broken________________________________________________re-tension or replace
Pump shift arm disconnected _____________________________________________________reconnect
Pump bypass valves open _______________________________________________put in closed position
Hydrostatic oil filter plugged_____________________________________________________replace filter
Bad transaxle ______________________________________________________________consult dealer
4. POWER UNIT LOSES POWER OR HYDROSTAT SYSTEM OVERHEATS
Hydrostatic transaxle oil too low _____________________________________________________add oil
Hydrostatic transaxle damaged_________________________________________________consult dealer
Hydrostatic transaxle oil blowing oil out vent________________________overfilled or water contaminated
5. ENGINE STALLS WHEN BLADES ARE ENGAGED
Operator not on seat ____________________________________________________________sit on seat
Faulty interlock system _______________________________________________________consult dealer
Bad blade spindle bearing_____________________________________________________consult dealer
Deck drive belt not properly routed ___________________________________________________reroute
Blades blocked by foreign material ___________________________________________clean under deck
•See engine manual for engine adjustments
ENGINE ELECTRICAL TROUBLE SHOOTING
1. ENGINE WILL NOT TURN OVER:
2. ENGINE WILL TURN OVER,
BUT WILL NOT START:
Dead battery
Bad ground connection
A. If there is spark at the plug:
No fuel
Bad fuel solenoid in engine
Bad terminal connection at battery
Wiring harness plugs are not attached properly at
the key switch or the PTO switch
B. If there is no spark at the plug:
Make sure safety interlock system is sequenced:
PTO switch is off
Control levers in neutral position
Parking brake is on
Operator in seat
Check safety interlock switches:
Seat switch
Neutral switch
Bad ignition module on engine
Bad parking brake switch
Bad PTO switch
19
SECTION IV
ASSEMBLY
MOUNTING SEAT
BATTERY
Remove either the standard seat, standard seat
w/armrests or the suspension seat from the cardboard container. Align the four 5/16” holes in the
seat frame with the four slots in the seat mounting
plate. Attach the seat using the hardware in the
parts bag accordingly (4 - 5/16” - 18 x 3/4” screws, 4
- 5/16” flatwashers, and 4 - 5/16” split lock washers
for the standard seats and the 5/16” - 18 nuts (4) for
the full suspension seat).
Attach the positive lead to the battery.
Seat Mounting
Plate
Additional wire tie straps are shipped to secure the
wiring harness as needed.
Battery
MOUNTING THE CONTROL
LEVERS
Slotted Hole
Remove the lower 3/8 x 1-1/4” fasteners from the lower control lever mounting holes.
Move the control levers into place so both levers are
in line with each other and secure with 3/8 x 1-1/4”
bolt and lockwasher.
DISCHARGE CHUTE
The discharge chute for the 52” deck is shipped
separate from the deck. Place the chute into position
and fasten with the fasteners provided
CONTROL LEVERS
Fold control levers forward into position and fasten
into place as shown below using fasteners provided. Slotted hole at bottom of bracket allows position
adjustment of the levers.
Control Levers
Discharge Chute
ITEMS TO CHECK:
Check oil level in the engine (see engine manual)
Check tightness of all fasteners, including bolts, lug
nuts, and setscrews.
Check tire pressure.
Pivot Bolt
(3/8 x 1-1/2” w/Locknut)
Slotted Hole and Adjusting Bolt
(3/8 x 1-1/2” w/Flatwasher and Locknut)
20
SAFETY DECALS
To promote safe operation, Bush Hog supplies safety decals on all products manufactured. Because damage
can occur to safety decals either through shipment, use or reconditioning, Bush Hog will, upon request, provide
safety decals for any of our products in the field at no charge. Contact your authorized Bush Hog dealer for
more information.
TO AVOID SERIOUS INJURY OR DEATH,
DO NOT OPERATE MOWER WITHOUT DISCHARGE
SHIELD OR DEFLECTOR IN PLACE AND GOOD REPAIR.
83056
83056
94132
DANGER
KEEP AWAY!
SHIELD MISSING FROM THIS AREA
TO AVOID SERIOUS INJURY OR DEATH,
DO NOT OPERATE WITHOUT THIS AND
ALL OTHER SHIELDS IN PLACE AND IN
GOOD CONDITION.
50043277
50012615
50043277
21
50043278
CAUTION
SHUT OFF ENGINE
BEFORE REFUELING
NEVER FILL FUEL TANK
INDOORS OR WHEN
ENGINE IS HOT.
WIPE UP ALL SPILLED
FUEL BEFORE STARTING
ENGINE.
DO NOT SMOKE WHILE
REFUELING.
94131
94131
50043279
50043280
22
TORQUE SPECIFICATIONS
Proper toque for American fasteners used on Bush Hog equipment.
Recommended Torque in Foot Pounds (Newton Meters).*
AMERICAN
Bolt Head Markings
SAE Grade 2
(No Dashes)
SAE Grade 5
(3 Dashes)
”
lt
Bo ter “B
e
m
Dia
Wrench
Size “A”
SAE Grade 8
(6 Dashes)
METRIC
Wrench
Size “A”
WRENCH
SIZE (IN.) “A”
BOLT DIAMETER
(IN.) “B” AND
THREAD SIZE
SAE
GRADE 2
SAE
GRADE 5
SAE
GRADE 8
7/16
1/4 - 2O UNC
6 (7)
8 (11)
12 (16)
7/16
1/4 - 28 UNF
6 (8)
10 (13)
14 (18)
1/2
5/16 - 18 UNC
11 (15)
17 (23)
25 (33)
1/2
5/16 - 24 UNF
13 (17)
19 (26)
27 (37)
9/16
3/8 - 16 UNC
20 (27)
31 (42)
44 (60)
9/16
3/8 - 24 UNF
23 (31)
35 (47)
49 (66)
5/8
7/16 - 14 UNC
32 (43)
49 (66)
70 (95)
5/8
7/16 - 20 UNF
36 (49)
55 (75)
78 (106)
3/4
1/2 - 13 UNC
49 (66)
76 (103)
106 (144)
3/4
1/2 - 20 UNF
55 (75)
85 (115)
120 (163)
7/8
9/16 - 12 UNC
70 (95)
109 (148)
153 (207)
7/8
9/16 - 18 UNF
79 (107)
122 (165)
172 (233)
15/16
5/8 - 11 UNC
97 (131)
150 (203)
212 (287)
15/16
5/8 - 18 UNF
110 (149)
170 (230)
240 (325)
1-1/8
3/4 - 10 UNC
144 (195)
266 (360)
376 (509)
1-1/8
3/4 - 16 UNF
192 (260)
297 (402)
420 (569)
1-5/16
7/8 - 9 UNC
166 (225)
430 (583)
606 (821)
1-5/16
7/8 - 14 UNF
184 (249)
474 (642)
668 (905)
1-1/2
1 - 8 UNC
250 (339)
644 (873)
909 (1232)
1-1/2
1 - 12 UNF
274 (371)
705 (955)
995 (1348)
1-1/2
1 - 14 UNF
280 (379)
721 (977)
1019 (1381)
1-11/16
1-1/8 - 7 UNC
354 (480)
795 (1077)
1288(1745)
1-11/16
1-1/8 - 12 UNF
397 (538)
890 (1206)
1444 (1957)
1-7/8
1-1/4 - 7 UNC
500 (678)
1120 (1518)
1817 (2462)
1-7/8
1-1/4 - 12 UNF
553 (749)
1241 (1682)
2013 (2728)
2-1/16
1-3/8 - 6 UNC
655 (887)
1470 (1992)
2382 (3228)
2-1/16
1-3/8 - 12 UNF
746 (1011)
1672 (2266)
2712 (3675)
2-1/4
1-1/2 - 6 UNC
870 (1179)
1950 (2642)
3161 (4283)
2-1/4
1-1/2 - 12 UNF
979 (1327)
2194 (2973)
3557 (4820)
”
lt
Bo ter “B
e
m
Dia
8.8
Numbers appearing on bolt heads
indicate ASTM class.
*Use 75% of the specified torque value for plated
fasteners. Use 85% of the specified torque
values for lubricated fasteners.
Proper torque for metric fasteners used on Bush Hog equipment.
Recommended torque in foot pounds (newton Meters).*
WRENCH
SIZE
(mm) “A”
BOLT
DIA.
(mm) “B”
ASTM
4.6
8
5
1.8 (2.4)
5.1 (6.9)
6.5 (8.8)
10
6
3 (4)
8.7 (12)
11.1 (15)
27 (37)
ASTM
8.8
ASTM
9.8
ASTM
10.9
13
8
7.3 (10)
21.1 (29)
16
10
14.5 (20)
42 (57)
53 (72)
18
12
25 (34)
74 (100)
73 (99)
93 (126)
21
14
40 (54)
118 (160)
116 (157)
148 (201)
24
16
62 (84)
167 (226)
181 (245)
230 (312)
30
20
122 (165)
325 (440)
449 (608)
33
22
443 (600)
611 (828)
36
24
41
27
46
30
23
211 (286)
418 (566)
563 (763)
778 (1054)
821 (1112)
1138 (1542)
1119 (1516)
1547 (2096)
®
BUSH HOG
, L.L.C.
P.O. Box 1039 ● Selma, AL 36702-1039
Telephone (334) 874-2700