Husqvarna MZ61 - Zero-Turn Lawn Mower Manual

INTRODUCTION

Gasoline containing a maximum of 10% ethanol (E IO) is permitted for use in this machine. The use of gasoline with more than 10% ethanol (El O) Will void the product warranty.

Failure to follow cautious operating practices can result in dangerous injury to the operator or other persons. The owner must understand these instructions, and must let only approved persons who understand these instructions to operate the mower.
Each person operating the mower must be of sound mind and body and must not be under the influence of mind altering substances.

The rollover protection system's capabilities may be impaired by damage if the mower is overturned or if alteration to the ROPS occurs. If these conditions take place, the total structure MUST be replaced.

Engine exhaust, some of its constituents, and certain vehicle components contain or emit chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Battery posts, terminals and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Clean your hands after handling.

Engine exhaust and certain vehicle components contain or emit chemicals considered to cause cancer, birth defects, or other reproductive system damage. The engine exhaust contains carbon monoxide, which is an odorless, colorless, poisonous gas. Do not use the machine in enclosed spaces.
When this product is worn out and no longer used, return it to the reseller or other party for recycling.
To implement improvements, specifications and designs can be altered without prior notification.
Note that no legal demands can be placed based on the information contained in these instructions.
Use only original parts for repairs. The use of other parts voids the warranty.
Do not modify or install non-standard equipment to the unit without consent from the manufacturer. Modifications to the unit may cause unsafe operations or damage the unit.

Congratulations
Thank you for purchasing a Husqvarna rideon mower. This machine is built for superior efficiency to rapidly mow primarily large areas. A control panel easily accessible to the operator and a hydrostatic transmission regulated by steering controls both contribute to the machine's performance.
This manual is a valuable document. Read the contents carefully before using or servicing the machine. The following of instructions (use, service, maintenance) by all who operate this machine is important for the safety of the operator and others. It can also considerably increase the life span of the machine and increase its resale value.
If you sell your machine, be sure to give the operator manual to the new owner.
The final chapter of this operator manual provides a Service Journal. Make sure that service and repair work are documented. A correctly kept service journal reduces service costs for the maintenance and affects the machine's resale value. Please contact your dealer for more information. Take the operator manual along when the machine is taken to your dealer for service.

General
In this operator manual, left and right, backward and forward are used in relation to the machine's usual driving direction.
Continuous dedication to improve our products require that specifications and design are subject to change without notice.

Driving and Transport on Public Roads

Check applicable road traffic regulations before transporting on public roads. If the machine is transported, you must always use approved fastening equipment and make sure that the machine is correctly attached. DO NOT operate this machine on public roadways.

Towing

If machine is equipped with a tow hitch, use much more caution when towing. Do not let children or others in or on the towed equipment. Make wide turns to avoid jack-knifing. Travel slowly and leave more distance to stop.
Do not tow on sloped ground. The weight of the towed equipment may cause loss of traction and loss of control.
Follow the manufacturer's recommendation for weight limits for towed equipment. Do not tow near ditches, canals, and other hazards.

Operating

This machine is constructed only for mowing grass on lawns and even ground without obstacles such as stones, tree stumps, etc. The machine can also be used for other tasks when equipped with special accessories provided by the manufacturer. Operating instructions for the accessories are provided with delivery. All other types of uses are incorrect. The manufacturer's directions concerning operation, maintenance, and repairs must be carefully followed.
Lawn mowers and all power equipment, can be potentially dangerous if used improperly. Safety requires good judgement, careful use in accordance with these instructions and common sense.
The machine must only be operated, maintained, and repaired by persons familiar with the machine's special characteristics and who are also knowledgeable about the safety instructions. Use only approved repair parts to maintain this machine.
Accident prevention regulations, other general safety regulations, occupational safety rules, and traffic regulations must be followed without fail.
Unauthorized modifications to the design of the machine may absolve the manufacturer from liability for resulting personal injury or property damage.

Manufacturing Number
The machine's manufacturing number can be found on the printed plate affixed to the engine compartment.
Stated on the plate, from the top are:

• The machine's type designation (I.D.).
• The manufacturer's type number (Model).
• The machine's serial number (Serial no.)

Please have the type designation and serial number available when ordering spare parts.
The engine's manufacturing number is stamped on one of the valve covers.
The plate states:

• The engine's model.
• The engine's type.
• Code

Please have these available when ordering spare parts.
The wheel motors and hydrostatic pumps have a barcode decal affixed at the rear.

SYMBOLS AND DECALS

These symbols are found on the machine and in the operator manual. Study them carefully until you know what they mean.

Used in this publication to tell the reader of a risk of personal injury or death, particularly if the reader neglects to obey the instructions in the manual.

Used in this publication to tell the reader of a risk of material damage, particularly if the reader neglects to obey the instructions in the manual. Used also when there is a possibility for misuse or misassembly.

	Reverse
	Neutral
	Fast
	Slow
	Choke
	Fuel
	Park Brake
	Danger
	Use protective glasses
	Use protective gloves
	Wear hearing protection
	Do not stand here
	Warning! Battery acid is corrosive, explosive and flammable
	Warning! Do not touch parts
	Warning! Keep away from the discharge deck
	Warning! Do not use without deflector or grass catcher
	Read Operator Manual
	Shut off engine, before maintenance or repair
	Keep a safe distance from the machine
	Use on slopes no greater than 10°
	No passengers
	Whole body exposure to thrown objects
	Severing of fingers and toes
	Do not open or remove safety shields wIth engine running
	Careful backing up, watch for other people
	Careful going forward, watch for other people

SAFETY

Safety Instructions

These instructions are for your safety. Read them carefully.

THIS CUTTING MACHINE CAN AMPUTATE HANDS AND FEET AND THROW OBJECTS. FAILURE TO OBEY THE FOLLOWING SAFETY INSTRUCTIONS COULD RESULT IN SERIOUS INJURY OR DEATH.

CHILDREN CAN BE SERIOUSLY INJURED OR KILLED BY THIS EQUIPMENT. Carefully read and obey all the safety instruction that follow.

The American Academy of Pediatrics recommends that children be a minimum of 16 years of age before operating a riding lawn mower.

Protecting Children

Tragic accidents can occur if the operator is not alert to the presence of children. Children are frequently attracted to the machine and the mowing activity. Do not think that children will stay where you last saw them.

• Keep children out of the mowing area and in the watchful care of a responsible adult other than the operator.
  
• Be alert and turn machine off if a child enters the area.
• Before and while backing, look behind and down for small children.
• Do not carry children, even with the blades shut off. They can fall off and be seriously injured or interfere with safe machine operation. Children who have been given rides in the past can suddenly come into the mowing area to ride again and be run over or backed over by the machine.
  
• Do not let children to operate the machine.
• Use extreme care when going near blind corners, shrubs, trees, or other objects that can block your view of a child.

General Operation

• Read, understand, and obey all instructions on the machine and in the manual before starting.
  
• It is recommended that someone knows that you are mowing and can give aid if there is an injury or accident.
• Those who operate, maintain, and/or service this machine must first read and understand this Operator Manual. Local laws can regulate the age of the user. The owner is responsible for training the users of this equipment.
• The owner and operator of this equipment can prevent accidents and is responsible for accidents or injuries occurring to themselves, other persons and/or property.
• Do not put hands or feet near rotating parts or under the machine. Keep away from the discharge opening at all times.
• Only let responsible adults, who are familiar with the instructions, to operate the machine.
• Clean the area of objects such as rocks, toys, wire, etc., which could be picked up and thrown by the blades.
  
• Be sure the area is has no bystanders before operating. Stop machine if someone enters the area.
• Do not mow in reverse unless fully necessary. Always look down and behind before and while backing.
• Do not point discharged material toward someone. Avoid discharging material against a wall or obstruction. Material can ricochet back toward the operator. Stop the blades when going across gravel surfaces.
• Do not operate machine without the full grass catcher, discharge guard, or other safety devices in place and working.
• Slow down before turning.
• Always turn off blades, move the steering control lever out to the park brake position, stop engine and remove keys before dismounting.
• Do not carry passengers. The machine is only intended for use by one person.
• Operate the machine only in daylight or good artificial light.
• Disengage blades when not mowing. Shut off engine and wait for all parts to come to a full stop before cleaning the machine, removing the grass catcher or unclogging the discharge guard.
• Do not operate the machine while under the influence of alcohol or drugs.
• Look for traffic when operating near or going across roadways.
• Use more care when loading or removing the machine into a trailer or truck.
• Always wear eye protection when operating machine.
  
  When using the machine, approved personal protective equipment must be used. Personal protective equipment cannot remove the risk of injury but it will reduce the degree of injury if an accident does occur. Speak to your retailer for aid in choosing the right equipment.
• Wear correct Personal Protective Equipment (PPE) while operating this machine, including (at a minimum) sturdy footwear, eye protection, and hearing protection. Do not mow in shorts and/or footwear with open toes.
• Data shows that operators age 60 years and above are involved in a large percentage of riding mower-related injuries. These operators must evaluate if they can safely operate the riding mower sufficiently to protect themselves and others from serious injury.
• Obey the manufacturer's recommendation for wheel weights or counterweights.
• Keep machine free of grass, leaves or other debris buildup which can touch hot exhaust or engine parts and burn. Do not let the mower deck plow leaves or other debris that can cause a buildup to occur. Clean oil or fuel spillage before operating or storing the machine.
• Let machine cool before storage.

Personal Safety Equipment

• Make sure that first aid equipment is near at hand when using the machine.
• Do not use the machine when barefoot.
• Always wear protective shoes or boots. Steel toe caps are recommended.
• Always wear approved protective glasses or a full visor when assembling or driving.
• Always wear gloves when handling the blades.
• Do not wear loose clothing that can become caught in moving parts.
• Use ear protectors to avoid damage to hearing.

Slope Operation

Slopes are a major cause related to loss of control and tip-over accidents, which can result in severe injury or death. Operation on slopes requires more care. If you cannot back up the slope or if you feel uneasy on it, do not mow it.

• Mow up and down slopes (10 degrees maximum), not across.
  
• Look for holes, ruts, bumps, rocks, or other hidden objects. Uneven terrain could overturn the machine. Tall grass can hide obstacles.
• Select a low ground speed so it will not be necessary to stop while on the slope.
• Do not mow on wet grass. Tires can lose traction.
• Avoid starting, stopping, or turning on a slope. If the tires lose traction, disengage the blades and continue slowly straight down the slope.
• Move slowly and gradually on slopes. Do not make sudden changes in speed or direction, which could cause machine to roll over.
  
• Use more care while operating machine with grass catchers or other attachments; the stability of the machine can be effected.
• Do not use on steep slopes.
• Do not try to stabilize the machine by putting a foot on the ground.
• Do not mow near drop-offs, ditches, or embankments. The machine could suddenly roll over if a wheel is over the edge or the edge caves in.

Do not drive up or down hills with slopes greater than 10 degrees. Do not drive across slopes.

Safe Handling of Gasoline

To avoid personal injury or damage to property, use care in handling gasoline. Gasoline is very flammable and the vapors are explosive.

The engine and the exhaust system become very hot during operation. There is a risk for burns if touched. Let engine and exhaust system to cool before refueling.

• Do not fuel the machine indoors.
  
• Extinguish all cigarettes, cigars, pipes, and other sources of ignition.
• Use only approved gasoline containers.
• Do not remove gas cap or add fuel with the engine running. Let engine cool before refueling.
• Do not keep the machine or fuel container where there is an open flame, spark or pilot light such as on a water heater or other appliance.
• Before you start refueling, keep the risk of static electricity to a minimum by touching a metal surface.
• Do not fill containers in a vehicle or on a truck or trailer bed with plastic liner. Always put containers on the ground away from the vehicle when filling.
• Do not put too much fuel in the tank. Replace gas cap and tighten securely.
• Remove gas-powered equipment from the truck or trailer and refuel it on the ground. If this is not possible, refuel such equipment with a portable container, rather than from a gasoline dispenser nozzle.
• Keep the nozzle in contact with the rim of the fuel tank or container opening at all times until fueling is complete. Do not use a nozzle lockopen device.
• If fuel is spilled on clothing, change clothing immediately.
• Do not start the engine near spilled fuel.
• Do not use gasoline as a cleaning agent.
• If leaks occur in fuel system, the engine must not be started until problem has been resolved.
• Check the fuel level before each use and leave space for the fuel to expand, because the heat from the engine and the sun can otherwise cause the fuel to expand and overflow.

General Maintenance

• Do not use the machine indoors or in spaces lacking correct ventilation. The exhaust fumes contain carbon monoxide, an odorless and poisonous lethal gas.
  
• Make sure that the equipment is in good condition and that all nuts and bolts, especially those fastening the blade attachments, are correctly tightened and torqued.
  
  Use protective glasses for maintenance work.
  
• Maintain or replace safety and instruction labels as necessary.
• Do not interfere with the intended operation of or reduce the protection given by a safety device. Check their operation regularly. DO NOT operate a machine with a safety device that does not operate correctly.
• Check grass catcher components and the discharge guard frequently and replace with manufacturer's recommended parts when necessary.
  
  The engine must not be started when the driver's floor plate or protective plates for the mower deck's drive belt is removed.
• Do not change the settings of engine controllers and avoid running the engine at overly high engine speeds. If you run the engine too fast, machine components could be damaged.
• To reduce the risk of fire, keep machine free of grass, leaves or other debris buildup. Clean oil or fuel spills and remove fuel-soaked debris. Let machine cool before storing.
• Stop to do an inspection of the equipment if you run over or into anything. If necessary, make repairs before starting.
• Do not make adjustments or repairs with the engine running.
• The blades are sharp and can cause cuts and gashes. Wrap blades or use protective gloves when handling them.
• Check the park brake's operation regularly. Adjust and service as necessary.
• Do not work with the starter circuit if there is spilled fuel.
• Make sure that the fuel filler cap is mounted tightly and no flammable substances are kept in an open vessel.
• Sparking can occur when working with the battery and the heavy cables of the starter circuit. This can cause battery explosion, fire or eye injury. Sparking will not occur after the grounding cable (normally negative, black) is removed from the battery.
  
• Disconnect the grounding cable from the battery first and reconnect it last.
• Do not make a bridge short circuit across the starter relay to run the starter.
• Be very careful when handling battery acid. Acid on skin can cause serious corrosive burns. If you spill battery acid on your skin, rinse immediately with water.
• Acid in the eyes can cause blindness, contact a doctor immediately.
• Be careful when servicing the battery. Explosive gases form in the battery. Do not do maintenance on the battery when smoking or near open flames or sparks. The battery can explode and cause serious injury or damage.
  
• The machine is tested and approved only with the equipment originally supplied or recommended by the manufacturer. Only use approved repair parts for the machine.
• The mulch blades must only be used in familiar areas when higher quality mowing is necessary.
• Regularly clean the deck and the underside of the deck. Avoid spraying engine and electrical components with water.

Transport

• The machine is heavy and can cause serious crushing injuries. Be more careful when it is loaded on or removed from a vehicle or trailer.
• Use full width ramps for loading machine into a trailer or truck.
• The two front and rear tie down straps must be used and directed down and out from the machine.
• Check and abide by local traffic regulations before transporting the machine on roads.
• Use an approved trailer to transport the machine. Turn off the fuel supply. Fasten the machine down with approved devices such as bands, chains or straps.
• Do not tow this machine, it can cause damage to the drive system.
• Do not tow trailers, etc. with this mower. They can jackknife or overturn, causing damage to the mower and possible serious injury to the operator.
• Load the unit onto truck or trailer by driving up ramps of sufficient strength using a slow speed. Do not lift! The machine is not intended to be lifted by hand.
• When loading or removing this machine, do not use more than the maximum recommended operation angle of 10 degrees.

Use extreme care when loading the machine into a truck or trailer using ramps. There is the possibility of serious injury or death if the machine falls off the ramps.

The park brake is not sufficient to lock the machine in place during transport. Make sure the machine is correctly fastened to the transport vehicle.
Always reverse the machine onto the transport vehicle to avoid tipping it over.

Towing

If machine is equipped with a tow hitch, use much more caution when towing. Do not let children or others in or on towed equipment.
Make wide turns to avoid jack-knifing. Travel slowly and leave more distance to stop. Do not tow on sloped ground. The weight of the towed equipment may cause loss of traction and loss of control.
Follow the manufacturer's recommendation for weight limits for towed equipment. Do not tow near ditches, canals, and other hazards.

Spark Arrestor

This mower is equipped with an internal combustion engine and must not be used on or near unimproved forested, bush covered or grassy lands unless the engine's system is equipped with a spark arrestor meeting applicable local or state laws. Federal laws apply on federal lands. If a spark arrestor is used, it must be maintained in good working order by the operator.
A spark arrestor for the muffler is available through your authorized Husqvarna dealer.

Rollover Protection System

The Rollover Protection System (ROPS) increases the basic weight of the unit by 73 lbs.

• Do not use ROPS as a lifting, attaching or anchoring point.
• Do not use ROPS for wrecking or towing.
• Do not exceed Max GVW: 2822 lbs.
• Read the operator manual before use.
• Securely fasten the seat belt if the unit has a ROPS.
• Be certain the seat belt operates correctly and can be released quickly in the event of an emergency.
• Keep folding ROPS in the raised and locked position and use the seat belt when operating the machine.
• Lower a folding ROPS temporarily only when absolutely necessary. Do NOT wear the seat belt when the ROPS is folded down.
• Check carefully for overhead clearance (i.e. before driving under trees, electrical wires, through doorways) while loading into a truck or trailer.
• Keep the ROPS in safe operating condition by periodically inspecting for damage and keeping all mounting fasteners tight. Check all bolts, including on the seat belt, for correct torque before each use.
• Check the ROPS structure for damage before each use. If any part of the ROPS is damaged, the entire ROPS must be replaced.
• DO NOT remove the ROPS.
• Where possible, avoid operating the unit near ditches, embankments and holes.
• Reduce speed when turning, crossing slopes and on rough, slick or muddy surfaces. Stay off slopes too steep for safe operation.
• Watch where you are going, especially at row ends, on roads and around trees.
• Do not permit others to ride.
• Operate mower smoothly, no jerky turns, starts or stops.
• When mower is stopped, engage park brake securely.
• ROPS bar is NOT intended for use in sub zero temperatures.

Please note that there is NO roll over protection when the ROPS is folded down.

CONTROLS

This operator manual describes the Husqvarna Zero Turn Rider. The rider is fitted with a fourstroke overhead valve engine.
Transmission from the engine is made via belt-driven hydraulic pumps. Using the left and right steering controls, the flow is regulated and thereby the direction and speed.

1. Motion control levers
2. Park brake
3. Tracking knob
4. Fuel tank
5. Fuel shut off
6. Hydro release
7. Fuses
8. Choke control
9. Ignition switch
10. Service meter
11. Throttle
12. Blade switch
13. Seat adjustment
14. Deck lift
15. Deck release pedal

Steering Control Levers

The machine's speed and direction are continuously variable using the two steering controls. The steering controls can be moved forward or back about a neutral position. There is a neutral position, which is locked if the steering controls are moved out.

When both controls are in the neutral position (N), the machine stands still. By equally moving both controls forward or backward, the machine moves in a straight line forward or backward.

For example, to turn right while moving forward, move the right control towards the neutral position. The rotation of the right wheel is reduced and the machine turns to the right.
Zero turn can be achieved by moving one control backward (behind the neutral position) and carefully moving the other steering control forward from its neutral position. The rotation direction when zero turning is determined by which steering control is moved backward behind the neutral position. If the left steering control is pulled backward, the machine turns to the left. Use more care when using this maneuver.
If the steering controls are in uneven positions when standing still or do not fit in the slots for moving the controls out, they can be adjusted.

The machine can turn very fast if one steering control is moved much further forward than the other.

Throttle Control

The throttle controls the engine speed and the rate of rotation of the blades, assuming the blade switch is pulled out.
The control is moved forward or back to increase or decrease the engine speed.

To prevent the risk of fouling the spark plugs, do not idle the engine for long periods. USE FULL THROTTLE WHEN MOWING, for best mower performance and battery charging.

Ignition Switch

The ignition switch is used to start and stop the engine. On models with headlights, turn the key clockwise to ACCESSORY for headlight use.

Choke Control

The choke control is used for cold starts to give the engine a richer fuel mixture. For cold starts, pull the control up.

Blade Switch

To engage the mower deck, pull the knob out; mower blades are disengaged when the knob is pressed down.

Service Meter

The service meter displays the total number of hours the engine has run and shows when the engine and mower need servicing.
After every 50 hours of operation, an oil can icon will appear and stay on for two hours, before an automatic reset occurs. To manually reset the meter, turn the key off and on five times at one second intervals. To service the engine and mower, see the Service Journal of this manual.

Note: The service meter operates (clocks hours) only when the engine is running. Be sure to turn the key off when the unit is not in use, to prevent meter hours from accumulating.

Park Brake

The park brake is on the left side of the machine. Pull the lever backward to operate the brake and push forward to release it.

The machine must stand still when engaging the park brake. Always engage the park brake before dismounting. Release the park brake before moving the mower.

Seat Adjustment Lever

The seat can be adjusted lengthways. The lever under the front edge of the seat is moved to the left (as seen by the driver in the seat), to adjust the seat backward or forward.

Seat must not be adjusted while unit is in motion.

Fuel Shut Off Valve

The fuel shut off valve is at the left rear of the seat. The valve is off when the handle tab is turned perpendicular to the fuel line.

Fuses

Fuses are on the left hand side of the machine and are accessed by tilting the seat forward. Fuses are flat pin fuses type as used in automobiles. The 20 A is the primary fuse. The 7.5 A is for the mower deck coupling.

Tracking

If the mower is not tracking straight, check the air pressure in both rear tires. Recommended air pressure for the rear tires is 15 psi (1 bar).

1. Tracking adjustments are made using the tracking bolt and tracking knob. The tracking bolt and tracking knob act as limiting devices for the motion control levers when in the full forward position.
2. For preliminary tracking adjustment, move unit to an open, unobstructed area such as an empty parking lot or open field.
3. Back the tracking bolt out until flush with nut.
4. Loosen tracking knob out until flush with nut.
5. Test operate unit by driving it at full throttle and the full forward position on both motion control levers. Gradually turn in the tracking bolt on the right hand side until the unit noticeably starts drifting right.
6. Drive forward at full throttle with both motion control levers in the full forward position. Gradually turn in the tracking knob (left side) until unit tracks straight.

Cutting Height Pedal

The desired cutting height is set with the height pin. The cutting height pedal releases the deck lift to place the deck at the selected height.
For transport, push the lift pedal fully forward until the deck lift latches in the transport (highest) position.

Always raise the deck to the highest position for transport.

Hydro Release Levers

Transaxle bypass linkages must be engaged when pushing or pulling the mower. The release levers are on each side of the rear of the unit below the rear engine plate. See Manual Transport in the Operation section.

Bypass linkages are near the muffler. To prevent burns, the engine should be shut off and allowed to cool before the bypass linkage levers are handled.

Fuel Tank

Read the safety instructions before refueling. The capacity for the tank is five gallons.
Regularly check the gas cap gasket for damage and keep the cap correctly tightened.

The engine will run on a minimum of 87-octane unleaded gasoline (no oil mix). Environmentally adapted alkylate gasoline can be used. See Technical Data concerning ethanol fuel. Methanol fuel is not allowed. Do not use E85 alcohol based fuel. Damage to the engine and components can occur.
When operating in temperatures below 32°F, use fresh, clean winter grade gasoline to insure good cold weather starting.

Gasoline is very flammable. Observe caution and fill the tank outdoors (see the safety section).

Experience shows that alcohol blended fuels (called gasohol, ethanol or methanol) can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage. To avoid engine problems, the fuel system must be emptied before storage of 30 days or longer. Drain the gas tank, start the engine and let it run until the fuel lines and carburetor are empty. Use fresh fuel the next season. See Storage for more information. Do not use engine or carburetor cleaners in the fuel tank or permanent damage can occur.

Fill to the bottom of the filler neck. Do not add too much gasoline. Wipe off spilled oil or fuel. Do not keep, spill or use gasoline near an open flame.

The engine and the exhaust system become very hot during operation. There is a risk for burns if touched. Let engine and exhaust system to cool before refueling.

OPERATION

Read the Safety section and following pages, if you are unfamiliar with the machine.

Training

Due to unique steering capabilities, zero turn mowers are far more maneuverable than typical riding mowers.
Review this section fully before trying to move the mower under its own power. When first operating the mower or until becoming comfortable with controls, use a reduced throttle speed and reduced ground speed. DO NOT move control levers to the furthest forward or reverse positions during initial operation.
First time users must become familiar with the mower's movement on a hard surface, such as concrete or asphalt BEFORE trying to operate on turf. Until the operator becomes comfortable with the mower controls and zero turn, overly aggressive maneuvers can damage turf.

Steering

To move forward and rearward
The direction and speed of the mower's movements are effected by the movement of the control lever(s) on each side of mower. The left lever controls the left wheel. The right lever controls the right wheel.
First time users must push the mower (see Moving Machine By Hand in the Operation section) to an open, flat area without other persons, vehicles or obstacles nearby. To move the unit under its own power, the operator must sit in the seat and start the engine (see Before Starting in the Operation section). Adjust the engine speed to idle, release the park brake but do not engage the blades at this time. Pull control levers inward. As long as the control levers have not been moved forward or to the rear, the mower will not move.
Slowly move the two control levers forward slightly. This will let the mower start moving forward in a straight line. Pull the control levers back to the neutral position and stop the mower from moving.
Pull back slightly on control levers, allowing the mower to move to the rear. Push the control levers forward to the neutral position to stop the mower from moving.

To turn to the right
While moving in a forward direction, pull the right lever back towards the neutral position while maintaining the position of the left lever, this will slow the rotation of the right wheel and cause the machine to turn in that direction.

To turn to the left
While moving in a forward direction pull the left lever back towards the neutral position while maintaining the position of the right lever, this will slow the rotation of the left wheel and cause the machine to turn in that direction.

To zero turn
While moving in a forward direction, first pull the two control levers back until the mower stops or slows dramatically.
Then by alternating one lever slightly to the forward position and the other in the reverse position, complete the turn.

Roll Bar

Operate the unit with the roll bar in the raised and locked position and use the seat belt. There is no rollover protection when the roll bar is down. If it is necessary to lower roll bar, do not wear the seat belt. Raise the roll bar as soon as clearance permits.

The seat belt must be used when the roll bar is in upright position.

Make sure the work area is free of stones and other objects that could be thrown by the rotating blades.

Before Starting

1. Read the sections on Safety and Controls before starting the machine.
2. Do the daily maintenance before starting (see Maintenance Schedule in the Maintenance section).
3. Check that there is sufficient fuel in the fuel tank.
4. Adjust the seat to the desired position.
5. Set the deck cutting height by inserting the lift pin into the desired cut height.
   

The following conditions must be fulfilled before the engine can be started:

• The blade switch must be pressed downward into the disengaged position.
• The park brake must be up into the engaged position.
• Both steering controls must be in the locked (outer) neutral position.

Starting the Engine

1. Sit on the seat.
2. Raise the mower deck to the transport position by locking the lift pedal forward.
   
3. Engage the park brake, pulling the lever up.
   
4. Push the blade switch down to disengage the mower blades.
5. Move the steering controls outward to the locked (outer) neutral position.
6. Move throttle control to the middle position. If the engine is cold, pull the choke control up.
   
7. Open the fuel tank valve.
8. Push in and turn the ignition key to the start position.
   
   Do not run the starter for more than five seconds each time. If the engine does not start, wait approximately ten seconds before retrying.
9. When the engine starts, immediately release the ignition key back to the run position. Slowly push in the choke control knob, if it was used to start a cold engine.
10. Set the engine speed with the throttle. Let the engine to run at a moderate speed, approximately mid throttle, for a short time before use. USE FULL THROTTLE WHEN MOWING (no choke).

Running

1. Release the park brake by moving the lever downward.
   NOTE: The mower has an operator presence system. If the engine is running and the operator tries to leave the seat without first engaging the park brake, the engine will shut off.
2. Move the steering controls in, out of the neutral position (N).
3. Release the foot pedal latch to lower the deck to the set cutting height.
4. Move throttle control to full throttle.
5. Engage the mower deck by pulling the blade switch up.
   
   Make sure that no one is near mower when engaging blade switch.
6. Rotate the control levers inward and slowly move both control levers slightly forward to move forward in a straight line.

Stopping the Engine

1. Move the throttle to the minimum position (tortoise symbol).
2. Move the steering controls outward.
3. Disengage the mower deck by pressing the blade switch down.
4. Raise the mower deck by pressing the foot pedals forward to the transport position.
5. When the machine is standing still, engage the park brake by pulling the lever upward. If the engine has been worked hard, let it to idle at least 60 seconds and get to a normal operating temperature before stopping. To prevent fouling the spark plugs, avoid idling the engine for longer periods.
6. Turn the ignition key to the stop position and remove the key. Always remove the key when leaving the mower to prevent unauthorized use.
   
   Leaving the ignition switch in a position than OFF will cause the battery to be discharged.

Operating on Hills

Read the Safety Instructions Driving on Slopes in the Safety section.

• Use the slowest speed possible before starting up or down hills.
• Avoid stopping or changing speed on hills.
• If stopping is necessary, pull drive levers into the neutral position and push outward. Engage the park brake.
• To restart movement, release the park brake.
• Pull the control levers back to the center of the mower and push forward to regain forward motion.
• Make all turns slowly.

Do not drive the rider on terrain that slopes more than 10 degrees. Mow slopes up and down, never side to side. Avoid sudden directional changes.

Mowing Tips

• Observe and flag rocks and other fixed objects to avoid collisions.
• Begin with a high cutting height and reduce it until the desired mowing result is attained. Cut the average lawn to 6.35 cm during the cool season and over 7.62 cm during the hot months. For healthier and better looking lawns, mow frequently after moderate growth.
• For best cutting performance, mow grass over 15.24 cm in height twice. Make the first cut relatively high; the second to the desired height.
• The mowing result will be best with a high engine speed (the blades turn rapidly) and low speed (the rider moves slowly). If the grass is not too long and dense, the driving speed can be increased without negatively affecting the mowing result.
• The finest lawns are obtained by mowing frequently. The lawn becomes more even and the grass clippings more evenly distributed over the mown area. The total time taken is not increased as a higher operating speed can be used without poor mowing results.
• When mowing large areas, start by turning to the right so that clippings will discharge away from shrubs, fences, driveways, etc. After one or two rounds, mow in the opposite direction making left hand turns until finished.
  
• Avoid mowing wet lawns. The mowing result is poorer because the wheels sink into the soft lawn, clumps build, and grass clippings fasten under the cowling.
• Hose the mower deck underside with water after each use. When cleaning, the mower deck shall be raised into the transport position. Make sure the mower is cooled and the engine is off.
• Use compressed air to clean top surface of the deck. Avoid flooding water on top surface, engine and electrical components.
• When the mulching kit is used, it is important that the mowing interval is frequent.

Moving Machine By Hand

When pushing or pulling the mower, engage the bypass linkages. The release levers are on each side of the rear of the unit below the rear engine plate.

1. Raise the deck to the highest (transport) position.
2. Pull the release levers up and out of the keyhole slots. Release the levers with the head outside the bracket and held into the bypass setting.
   
3. To reengage the linkages to drive, reverse the procedure.

Load the machine into truck or trailer by driving up ramps in low gear. DO NOT LIFT! The machine is not intended to be lifted by hand.

Use more care when loading the machine into a truck or trailer using ramps. There is the possibility of dangerous injury or death if the machine falls off the ramps.

Do not make adjustments unless:

• the engine is stopped,
• the ignition key is removed,
• the park brake is engaged

Bypass linkages are near to the muffler. To prevent burns, the engine should be shut off and allowed to cool before the bypass linkage levers are touched.

MAINTENANCE

Maintenance Schedule

Following is a list of maintenance procedures that must be performed on the machine. For those points not described in this manual, visit an authorized service workshop. An annual service carried out by an authorized service workshop is recommended to maintain your machine in the best possible condition and to ensure safe operation.
Read General Maintenance in the Safety section.

MAINTENANCE	DAILY		AT LEAST ONCE EACH YEAR	MAINTENANCE INTERVAL IN HOURS
	BEFORE	AFTER		25	50	100	300
CHECK
Park brake for adjustment
Engine's oil level (each refueling)
Safety system
For fuel and oil leakages
For damage
For loose hardware (screws, nuts)
For mower deck damage
Tire pressures
Battery connections
CLEAN
Engine's cooling air intake
Below the mower deck
Around the engine
Around belts, belt pulleys
Engine's cooling air intake2
Air cleaner foam pre-filter2
Air cleaner paper filter cartridge2
ALSO
Examine muffler/spark arrestor
Start the engine & blades, listen for unusual sounds
Sharpen3/ Replace mower blades
CHECK
Throttle cable for adjustment
Mower deck for adjustment Condition of belts, belt pulleys
Condition of belts, belt pulleys
Caster wheels (at 200 hour intervals)
Engine valve clearance3
CHANGE
Spark plugs
Engine oil1
Engine oil filter
Fuel filter
Paper air filter2
Air cleaner foam pre-filter2
ALSO
Do the 300-hour service3

= Described in this manual
= Not described in this manual
= Refer to the engine manufacturer's manual

1. First change after 8-10 hours. When operating with a heavy load or at high ambient temperatures, replace every 50 hours.
2. In dusty conditions, cleaning and replacement are necessary more frequently.
3. Performed by authorized service workshop.

Before performing service or adjustment:

• Engage the park brake.
• Place the blade switch in the disengaged position.
• Turn the ignition switch to OFF position and remove the key.
• Make sure the blades and all moving parts have completely stopped.

Do not short battery terminals by allowing a wrench or other objects to contact both terminals at the same time. Before connecting battery, remove metal bracelets, wristwatch bands, rings, etc.
Positive terminal must be connected first to prevent sparks from accidental grounding.

The mower has a 12-volt negative grounded system. The other vehicle must also be a 12-volt negative grounded system. Do not use your mower to start other vehicles.

Battery

If the battery is too weak to start the engine, it must be recharged.

Jumper Cable Use

1. Connect each end of the RED cable to the POSITIVE (+) terminal on each battery, taking care not to short against chassis.
2. Connect one end of the BLACK cable to the NEGATIVE (-) terminal of the fully charged battery.
3. Connect the other end of the BLACK cable to a good CHASSIS GROUND on the mower with the discharged battery, away from the fuel tank and battery.

To remove cables, reverse order

1. Remove BLACK cable first from chassis and then from the fully charged battery.
2. Remove RED cable last from both batteries.

The mower has a maintenance free battery and does not need servicing. However, periodic charging of the battery with an automotive type battery charger will extend its life.

• Keep battery and terminals clean.
• Keep battery bolts tight.
• See chart for charging times.

*Charging time depends on battery capacity, condition, age, temperature and efficiency of charger

Cleaning the battery and terminals
Corrosion and dirt on the battery and terminals can cause the battery to lose power.

1. Lift the seat and rotate fully forward until supported by the seat rod.
2. Loosen the two wing nuts attached to the side J bolts sufficiently to allow the battery mount bracket to slide down off the battery.
   
3. Using two 1/2" wrenches disconnect BLACK battery cable then RED battery cable.
4. Carefully remove the battery from the mower
5. Rinse the battery with plain water and dry.
6. Clean terminals and battery cable ends with a wire brush until shiny.
7. Coat the terminals with grease or petroleum jelly.

Replacing

1. Install the new battery with terminals in the same position as the used battery.
2. Connect RED battery cable first to positive (+) battery terminal.
3. Connect BLACK grounding cable to negative (-) battery terminal.
4. Slide mount bracket back up over battery and retighten wing nuts.

Do not open or remove caps or covers. Adding or checking level of electrolyte is not necessary.
Always use two wrenches for the terminal screws.

Always wear eye protection when around batteries.

Lead-acid batteries generate explosive gases. Keep sparks, flame and smoking materials away from batteries.

Safety System

The machine has a safety system that prevents starting or driving under the following conditions.
The engine can only be started when:

• the mower deck is disengaged.
• the steering controls are in the outer, locked neutral position.
• the park brake is engaged.

To be able to drive, the driver must sit in the seat and release the park brake before the steering controls can be moved into the neutral position, otherwise the engine will stop.

Make daily inspections to ensure that the safety system works by attempting to start the engine when one of the conditions is not met. Change the conditions and try again.
If the machine starts when one of these conditions is not met, turn the machine off and repair the safety system before using the machine again.
Make sure the engine stops when the park brake is released and the operator leaves the seated position.
Check that the engine stops if the mower blades are engaged and the driver temporarily moves off the driver's seat.

Park Brake

Visually check that no damage is found on the lever, links, or switch belonging to the park brake. Do a standstill test and check that there is sufficient braking. For park brake adjustments, contact the Husqvarna service workshop.

Faulty adjustment will result in reduced braking and can cause an accident.

Tire Pressures

All tires must be at 15 psi / 103 kPa / 1 bar.

DO NOT add a tire liner or foam fill material to the tires. Excessive loads created by foam filled tires will cause premature failures.
Only use tires specified by Husqvarna.

V-belts

Check every 100 hours of operation. Check for severe cracking and large nicks. The belts are not adjustable. Replace the belts if they begin to slip from wear.
NOTE: The belt will show some small cracks in normal operation.

Deck Belt

Deck Belt Removal
Park on a level surface. Engage park brake. Lower the deck into the lowest cutting position.

1. Remove foot plate and belt shields.
2. Remove dirt or grass that has accumulated around the cutter housings and the deck surface.
3. Using a ratchet or a breaker bar and 9/1 6" socket in the square opening in the idler arm, shift the arm counter clockwise to release the tension on the belt.
   
4. Carefully lift the belt over the top of the cutter housing pulleys.
5. Remove the belt from around the electric clutch on the engine shaft.

Deck Belt Installation
NOTE: For ease in installing the deck belt, refer to the routing decal on the cutting deck.

1. Wrap the deck belt around the electric clutch pulley that is on the engine shaft.
2. Route the belt forward between the spring loaded and stationary pulleys.
3. Place belt around spring loaded idler pulley.
4. Wrap the belt around the stationary idler pulley and around the mandrel housings.
5. Push inward on the idler arm and carefully put belt over stationary idler pulley. When the belt is correctly routed, slowly release the idler arm to tighten the belt.
6. Check that there are not twists in the belt and that the routing matches the routing decal.
7. Replace belt shields on both mandrel housings and attach with fasteners.

Pump Belt

The belts are not adjustable. Replace belts if they begin to slip from wear.

Replacing Pump Belt
Park the mower on a level surface. Engage the park brake.

Belt Removal
From the top side of the deck:

1. Remove the deck belt (see Deck Belt Removal in this section of the manual).
2. Tilt seat forward to access fan covers.
   Remove both fan covers.
   

From the underside of the mower:

3. Remove clutch stop to access the belt.
4. With a 1/2" breaker bar and using the square opening in the pump idler arm, shift the arm to create slack in the belt.
   
5. With the idler arm in the slack position, slip a screwdriver, clevis pin or similar into the 3/8" hole in the plate that sits between the two fan covers. This will keep the idler in the extended position and allow removal of the breaker bar.
6. Remove belt from the engine and pump pulleys over the top of the fans.

Belt Installation

1. If the pump is not locked in the extended position, do Steps 4 and 5 from the above instructions again.
2. Slip the belt over the fans and put it between the idler pulleys.
3. Place the belt over the right and left idler pulleys.
4. Place the belt on the engine pulley.
5. Use the breaker bar to hold the tension off the belt while removing the implement used as a brace in the plate.
6. Install and tighten the clutch stop.
7. Install the fan shields.
8. Install the deck belt.

Cutting Blades

Blades are sharp. Protect your hands with gloves and/or wrap blades with a heavy cloth when handling.
The sharpening of blades must be carried out by an authorized service workshop.

For the best mowing effect, it is important that the blades are well sharpened and not damaged.
Replace blades that have been bent or cracked when hitting obstacles.
Let the service workshop decide whether a blade with large nicks can be repaired/ground or must be replaced. Balance the blades after sharpening.
Check the blade mounts.

Blade Replacement

1. Remove blade bolt by turning it counter clockwise.
2. Install new or re-sharpened blade with stamped GRASS SIDE facing toward the ground/grass (down) or THIS SIDE UP facing the deck and cutter housing.
3. Install and tighten the blade bolt correctly.
4. Torque the blade bolt to 45-55 lb-pie (122 Nm).

The special blade bolt is heat treated. Replace it with a Husqvarna bolt if necessary. Do not a use lower grade hardware than specified.

Adjusting the Mower Deck

Leveling Deck
Adjust the deck while the mower is on a level surface. Make sure the tires are inflated to the correct pressure. See Tire Pressures in Maintenance section. If tires are under or over inflated, the deck cannot be correctly adjusted. Faulty mower deck adjustments will cause an uneven mowing result.
Four slots control the height and pitch of the mower deck. Adjust the deck slightly higher in the rear.
NOTE: To insure precision in the leveling procedure, the mower deck drive belt must be installed before leveling the deck.

1. Wear heavy gloves. Turn each outer blade tip to align with the deck side to side.
   
2. Measure from the floor surface up to the bottom of the blade tip on the discharge side of the mower deck. Record this measurement. Move to the opposite side; check that measurement is the same. If adjustment are necessary, loosen the locknut and adjust bolt up until both side-to-side measurements are equal. Record measurement.
   
3. Turn both outer blades to align with the deck front-to-rear. Reposition the rear mounting bolts up or down until the rear blade tips are positioned 3.175 mm to 9.525 mm higher in the rear than the front blade tips.
4. Confirm measurements again. The blade tip height must be equal side-to-side. In the rear, blade tips must be 3.175 mm to 9.525 mm higher than the front measurement. In the front, blade tips must be equal from side-toside.

NOTE: This will place the mower deck in a standard measurement position. Depending on the type of grass being mowed or environmental conditions, more adjustments can be necessary to get the desired cut.

ZT-3100 Powertrain

Regular external maintenance of the ZT-3100 Powertrain^TM should include the following:

1. Check oil level in expansion tanks. When the engine is cold, the tanks should be at the FULL COLD level.
2. Examine the vehicle drive belt, idler pulley(s), and idler spring(s). Insure that no belt slippage can occur. Slippage can cause low input speed to the transmission.
3. Examine the transmission cooling fan for broken or bent blades. Remove any obstructions such as grass clippings, leaves or dirt.
4. Examine the park brake and vehicle linkage to make sure they work correctly.
5. Examine the vehicle control linkage to the directional control arm on the transaxle. Also, make sure the control arm is correctly fastened to the trunnion arm of the transaxle.
6. Examine the bypass mechanism on the transaxle and unit linkage to make sure it rotates and releases fully.

Any servicing dealer attempting a warranty repair must have prior approval before conducting maintenance of a Hydro-Gear® product, unless the servicing dealer is a current Authorized Hydro-Gear Service Center.

Caster Wheels

Check every 200 hours. Check that wheels turn freely. Foam filled tires or solid tires will void the warranty.
To replace, remove the nut and caster bolt. Pull the wheel out of the yoke and take care with the spacer. Install in reverse order. Tighten the caster bolt and torque to 45 ft-lbs (61 Nm).

NOTE: Tire must turn freely but axle spacers must not. If wheels do not turn freely take the unit to the dealer for service.

Anti-scalp Rollers

Anti-scalp rollers are correctly adjusted when they are slightly off of the ground when the deck is at the desired cutting height. Anti-scalp rollers keep the deck in the correct position to prevent scalping in most terrain conditions. Do not adjust the rollers to support the deck. The rollers must be approximately 6.5 mm from ground.

Adjust anti-scalp rollers with the mower on a flat level surface. To avoid deck damage, the anti-scalp rollers must not be adjusted to support the deck.

Cleaning

Regular cleaning, especially under the mower deck, will increase the machine's life-span. Clean the machine directly after use (after it is cooled), before the debris sticks.
Do not spray water on the top of the mower deck. Use compressed air to clean the top side of the mower deck. Do not use a high pressure washer or steam cleaner. Avoid spraying engine and electrical components with water.
Clean the underside of the deck with normal water pressure. Do not rinse hot surfaces with cold water. Let unit cool before washing.

Always wear eye protection when cleaning and washing.

Hardware

Check daily. Examine the machine for loose or missing hardware.

LUBRICATION

Lubrication Schedule

12/12 Every year
1/52 Every Week
1/365 Every day
* Initial hydraulic oil and filter change at 100 hrs, every 400 hrs thereafter
Change engine oil every 50 hours

Lubricate with grease gun
Filter change
Oil change
Level check

General

Remove the ignition key to prevent unintentional movements during lubrication.
When lubricating with an oil can, it must be filled with engine oil.
When lubricating with grease, unless otherwise stated, use high grade molybdenum disulphide grease.
For daily use, the machine must be lubricated twice weekly.
Wipe away excess grease after lubrication.
It is important to avoid getting lubricant on the belts or the drive surfaces on the belt pulleys. If this happens, clean them with spirits. If the belt continues to slip after cleaning, it must be replaced. Gasoline or other petroleum products must not be used to clean belts.

Use minimal lubrication and remove excess lubricant so that is does not come into contact with belts or belt pulley drive surfaces.

Escaping hydraulic oil under pressure can have sufficient force to penetrate the skin, causing serious injury. If injured by escaping fluid, see a doctor at once. Serious infection or reaction can develop if proper medical treatment is not administered immediately.

Engine oil change

NOTE: Change the engine oil when the engine is warm. Refer to the engine owner's manual for the correct replacement oil and filter change recommendations.

The engine drain plug is near to the muffler. To prevent burns, the engine should be shut off and allowed to cool slightly so the engine is still warm but the adjacent surfaces and oil are not.

1. Park on a level surface. Engage park brake.
2. Clean the dirt and debris from the area around the oil fill cap.
3. Remove the cap/dipstick.
4. Find the drain hose at the right rear of the engine. Place a sufficiently sized container under the end of the drain hose and remove the oil drain plug.
   
5. Let the used oil fully drain from the engine.
6. Replace and tighten the drain hose plug.
7. Fill the engine with new oil to the bottom of the fill tube threads. Check the level with the dipstick.
8. Replace and tighten the oil fill cap when the oil level is FULL.
9. To discard the used oil, refer to local disposal regulations.
10. Refer to the Service Journal for oil checking and changing intervals and change recommendations.

Wheel and Deck Zerks

Use only good quality bearing grease. Grease from well-known brand names (petrochemical companies, etc.) usually maintains a good quality.

Front Wheel Mount
Lubricate 3-4 strokes with a grease gun on each set of wheel mounts.

Front Wheel Bearings
Lubricate 3-4 strokes with a grease gun on each set of wheel bearings.

Deck Spindles
Lower the cutting deck completely.
If a grease gun without rubber hose is used, the foot plate must be removed to access the center spindle.
Lubricate with a grease gun, 2-3 strokes per spindle.

Transaxle Fluid Change

The transaxle is designed with an external filter for ease of maintenance. To ensure constant fluid quality levels and longer life, an oil filter change interval of every 400 hours is recommended.
The following procedure is performed with the transaxles installed in the mower and the mower on level ground. Apply the pump release valve for each transaxle and set the park brake.

1. Remove the filter guard screws and filter guard. Clean any loose debris from around the perimeter of the filter.
2. Place an oil drain pan (12" or more diameter and 8 qt. capacity is optimal) beneath the oil filter. Remove the oil filter from the transaxle.
3. After the oil has drained, wipe the filter base surface and apply a film of new oil to the gasket of the replacement filter.
4. Install the new filter by hand, turning it three quarters to one full turn after the filter gasket contacts the filter base surface.
5. Reinstall the filter guard. Torque screws to 65 in/lbs. each.
6. Repeat steps on the opposite side.
7. Drain old oil filters of all free flowing oil prior to disposal. Place used oil in appropriate containers and dispose of it in accordance with laws in your area.
8. Remove the top port plug from the left and right sides of the transaxles prior to filling with oil. This will allow the transaxles to vent during oil fill.
   
9. Remove the cap from the transaxles' expansion tank located on the vehicle frame.
10. Fill with 20W50 motor oil until oil just appears at the bottom of each transaxles' top port (approximately two quarts per transaxle, four quarts total). Install the top port plug into each transaxle as the oil level reaches the port.
11. Install and torque the top port plugs to 180 in./lbs.
12. Continue to fill the transaxles through the expansion tank until the FULL COLD line is reached (this will take approximately 23 additional ounces).
13. Reinstall the expansion tank cap by hand. Be careful to not overtighten.

Transmission Purging
Purge procedures must be implemented if the hydrostatic system has been opened for maintenance or when more oil has been added to the system.
Due to the effects air has on efficiency in hydrostatic drive applications, it is critical to purge the system. Resulting symptoms of air in hydrostatic systems may be:

• Noisy operation.
• Lack of power or drive after short term operation.
• High operation temperature and excessive expansion of oil.
• Shortened component life.

Before starting, make sure the oil tank is at the proper oil level. If not, fill to the specifications outlined above.
Perform the procedure first with the vehicle drive wheels off the ground, then repeated under normal operating conditions.
See Moving Machine By Hand in the Operation section for bypass linkage adjustments.

1. Disengage the brake if activated.
2. With the bypass linkage open and the engine running at fast idle, 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.
3. With the bypass linkage closed and the engine running, slowly move the directional control in both forward and reverse directions (5 to 6 times). Check the oil level and add oil as required after stopping the engine.
4. It may be necessary to repeat Steps 2 and 3 until all the air is completely purged from the system. When the hydraulic drive operates at normal noise levels and moves smoothly forward and reverse at normal speeds, the hydraulic drive is considered purged.
5. After the vehicle has been used two times, the oil level must be checked while the oil is cold and adjusted accordingly.

TROUBLESHOOTING

Problem / Cause

Engine will not start

• Blade switch is engaged
• Steering controls are not locked in the neutral position Park brake is not activated
• Dead battery
• Contamination in the carburetor or fuel line
• Fuel supply shutoff valve is closed or in the wrong position
• Clogged fuel filter or fuel line
• Ignition system faulty

Starter does not turn the engine over

• Dead battery
• Battery terminal cable contacts are defective
• Blown fuse
• Fault in the starter safety circuit. See Safety System in the Maintenance Section

Engine runs rough

• Faulty carburetor
• Clogged fuel filter or jet
• Choke is activated with a warm engine
• Clogged ventilation valve on the fuel cap
• Fuel tank nearly empty
• Fouled spark plugs
• Rich fuel mixture or fuel-air mixture.
• Wrong fuel type
• Water in fuel
• Clogged air filter

Engine seems weak

• Clogged air filter
• Fouled spark plugs
• Carburetor incorrectly adjusted
• Air trapped in hydraulic system

Machine vibrates

• Blades are loose
• Blades are incorrectly balanced
• Engine is loose

Engine overheats

• Clogged air intake or cooling fins
• Engine overloaded
• Poor ventilation around engine
• Defective engine speed regulator
• Too little or no oil in the engine
• Contamination in the fuel line
• Fouled spark plugs

Battery not charging

• Battery terminal cable contacts are defective
• Charging lead is disconnected
• Fault in engine charging system

Mower moves slowly, unevenly, or not at all

• Park brake activated
• Bypass linkage engaged
• Transmission drive belt is slack or off
• Air trapped in hydraulic system

Mower deck not engaging

• Drive belt for the mower deck is loose
• Electromagnetic coupling contact is loose
• Blade switch is faulty or loose from cable contact
• Blown fuse

Transaxle leaks oil

• Damaged seals, housing, or gaskets
• Air trapped in hydraulic system

Uneven mowing results

• Unequal air pressures in tires
• Bent blades
• Suspension for the mower deck is uneven
• Blades are dull
• Driving speed too high
• Grass is too long
• Grass has collected under the mower deck

STORAGE

Winter Storage

The machine must be readied for storage at the end of the mowing season, or if it will not be in use for more than thirty days.
Fuel allowed to stand for long periods of time (thirty days or more) can leave sticky residues that can plug the carburetor and disrupt engine function.
Fuel stabilizers are an permitted option as regards to the sticky residues that can occur during storage.
Add stabilizer to the fuel in the tank or in the storage container. Always use the mixing ratios specified by the manufacturer of the stabilizer. Run the engine for at least ten minutes after adding the stabilizer so that it reaches the carburetor. Do not empty the fuel tank and the carburetor if a stabilizer has been added.

Do not store an engine with fuel in the tank indoors or in poorly ventilated spaces where fuel vapor can come in contact with open flames, sparks, or a pilot light such as in a boiler, hot water tank, clothes dryer, etc. Handle the fuel with care. It is very flammable and can cause serious personal injury and property damage. Drain the fuel into an approved container outdoors and store far away from open flame or sources of ignition. Do not use gasoline for cleaning. Use a degreaser and warm water.

To ready the machine for storage:

1. Thoroughly clean the machine, especially under the mower deck. Touch up damage to the paint and spray a thin layer of oil on the underside of the mower deck to avoid corrosion.
2. Inspect the machine for worn or damaged parts and tighten nuts or screws that may have become loose.
3. Change the engine oil; dispose of properly.
4. Empty the fuel tanks or add a fuel stabilizer. Start the engine and let it run until the carburetor is drained of fuel or the stabilizer has reached the carburetor.
5. Remove the spark plug and pour about a tablespoon of engine oil into the cylinder. Turn over the engine so that the oil is evenly distributed and then refit the spark plug.
6. Lubricate all grease zerks, joints, and axles.
7. Remove the battery. Clean, charge, and store the battery in a cool place, but protect it from direct cold.
8. Store the machine in a clean, dry place and cover it for extra protection.

Service

When ordering spare parts, please specify the purchase year, model, type, and serial number.
Always use genuine Husqvarna spare parts.
An annual check-up at an authorized service workshop is a good way to ensure that the machine performs its best the following season.

SCHEMATIC

TECHNICAL DATA

1. The power rating as declared by the engine manufacturer is the average gross power output at the specified RPM of a typical production engine for the engine model measured using SAE Standards for engine gross power. Refer to the engine manufacturer engine specifications.

Torque Specifications

HEX HEAD CAP SCREWS
The torque values shown must be used as a general guideline when specific torque values are not given.

U.S. Standard Hardware

** Grade 5 - Minimum commercial quality (lower quality not recommended)

Metric Standard Hardware