1. SAFETY

2. WARRANTY POLICY

3. SPECIFICATIONS

4. SET UP AND SERVICE

5. OPERATION INSTRUCTIONS

6. CARE AND MAINTENANCE

7. TROUBLE SHOOTING

8. PARTS ILLUSTRATIONS

9. ELECTRICAL SCHEMATIC

10. PARTS LIST

INDEX

Pages 1 - 3

Page 4

Page 5

Pages 6 - 1 1

Pages 1 2 - 1 3

Pages 14 - 21

Pages 22 - 24

Page 29

Page 30

Pages 31 - 33

IMPORTANT - READ CAREFULLY

The Dixon ZTR Mower is both easy and fun to operate. However, any power mower must be operated properly to be safe. It is not a toy or a recreational vehicle.

Before you start to use the mower, read the operator's manual carefully, and become completely familiar with the controls.

The information in this operator's manual applies to all Dixon ZTR Model 502

Mowers. Your Dixon dealer will gladly provide a check-out ride, and answer any questions.

See your dealer for warranty service, parts and repairs.

Box 1569

DIXON INDUSTRIES, INC.

Coffeyville, Kansas67337-0945 (316)251-2000 Airport Industrial Park

SAFETY

RIDING LAUNMOVJERS, IF IMPROPERLY OPERATED, CAN CAUSE SERIOUS INJURY.

The following examples are the most common causes of injury to the operator or

1. BLADE CONTACT: The operator or bystander inserts a hand or foot into the discharge chute or under the mower deck and into the path of the cutting blade.

Never run the mower blades when there are people nearby.

Always turn the engine off when cleaning or working around the mower deck.

2. RUN-OVER: This situation occurs when a bystander is run-over or backed over by the mower. The most frequently cited examples are with small children who wander into, or are allowed to play, in an area where the mower is being operated.

Never run the mower blades when there are people nearby, especially children.

Young children should be indoors and watched by an adult.

Always look behind you before backing up.

3. TIP-OVER: This occurs when the mower tips over, usually sideways or to the rear.

This situation is due to operation of the mower on steep inclines or near a drop off.

Mow across the slope to slightly uphill.

Mow slopes when the grass is dry and watch for bumps, holes and other

Test the slope with the blades off. A good rule of thumb is "Don't mow on a slope you can't back up". Stay clear of drop-offs, especially if they are on the down side of a slope.

4. THROWN OBJECTS: The fast spinning mower deck blade can strike stones or other objects which can be hurled into the path of a bystander. To prevent this from happening, never remove the safety discharge chute from the mower deck, or operate the mower when other people are around.

5. FIRES: Most accidents of this type occur during re-fueling of the mower or placing the mower in a storage situation. The exhaust system and related engine components operate at very high temperatures which can ignite any fuel spilled on or near them. Always allow the mower to cool before re-fueling or placing in storage.

6. OPERATION BY CHILDREN: This mower is not a toy or recreational vehicle.

Never allow children to operate the mower in any manner or to ride as a passenger.

Please review all the safety precautions outlined on the following pages satisfactory use of this product.

SAFETY Page 2

SAFETY REMINDERS: READ CAREFULLY BEFORE OPERATION

1. Wear appropriate, safe clothing when mowing - close fitting jeans or slacks and heavy leather or safety shoes with rough soles. Never operate this mower with bare feet or open sandals.

2. Do not operate on wet or slippery grass.

3. Always mow at the slowest speed that will cut satisfactorily.

4. Keep hands and feet away from the blade at all times.

5. Keep persons clear of the discharge chute. Do not operate mower unless deflector is in place.

6. When mowing hills or slopes, use extreme caution. Reduce speed, do not make sudden starts, stops or turns.

7. Always disengage blades before taking the mower across walks or objects that project above the surface.

8. Stay alert for holes, rocks and roots in the terrain, and other hazards. Keep away from drop-offs.

9. When the mower is not in use, turn the engine off and remove key. Never leave the engine running unattended. Your Dixon mower is equipped with a weight-sensitive switch that kills the engine when operator leaves the seat while blades are engaged.

"Test this important safety feature before each time mower is used.

This may be done by starting engine, engaging blades and then rising slightly from seat. If engine does not stop, see your dealer for necessary repair."

10. Before adjusting or servicing your mower, turn off the engine and let it cool. Be sure all moving parts are stopped. Never run the 502 with the body open.

11. Never run the engine indoors; the fumes are dangerous.

12. Before backing your Dixon Mower; stop, turn around and look.

13. Handle gasoline with care - it is highly flammable.

A. Use approved gasoline container.

B. Never remove the fuel cap of, or add gasoline to, a running or hot engine, or an engine that has not been allowed to cool after running. Never fill the tank indoors and always clean up spilled gasoline.

C. Never store the mower, with gasoline in the tank, inside the building where fumes may reach an open flame or spark. Allow the engine to cool before storing in any enclosure.

14. Never lift lawnmower by the body; lift only by the frame.

15. Never carry passengers.

Page 3

SAFETY REMINDERS: (continued)

16. Use care when pulling loads or using heavy equipment.

A. Use only approved drawbar hitch points.

B. Limit loads to those you can safely control.

C. Do not turn sharply. Use care when backing.

17. Watch out for traffic when crossing or near roadways.

18. Keep the mower in good operating condition, and keep safety devices in place and

19. Keep all nuts, bolts and screws tight to be sure the mower is in safe working condition.

20. To reduce fire hazard, keep the engine free of grass, leaves or excessive grease.

21. The mower should be stopped and inspected for damage after striking a foreign object or if it starts vibrating, and any damage should be repaired before restarting and operating the mower.

22. When mowing, proceed as follows:

A. Mow only in daylight or in good artificial light.

B. Shut the engine off when removing the grass catcher or unclogging chute.

C. Check the blade mounting bolts for proper tightness at frequent intervals.

D. Never operate the machine when using medication or under the influence of alcohol or drugs.

Page 5

SPECIFICATIONS

Chassis: 11 GA - rectangular tube.

Body: Two piece - made of DR acrylic reinforced with fiberglass, color fast, scratch and impact resistant. Front body contains access panels for battery service and engine to mower deck belt removal. Rear body tilts up to allow service on the entire drive system.

Seat: Economically designed for operator comfort by use of high density closed cell foam, contoured back rest and arm rests. Seat is adjustable fore and aft.

Mower Deck: 12 GA stamped steel construction, (3) blades, 50" cut width, cut height 1" to 4" via 7 position lift handle. Self cleaning design, smoothly curved front, aides discharge of grass.

Blade Drive: Warner electric clutch.

Drive System: (2) Sundstrand BDU - 10 L hydrostatic transmissions driven by a

Engine: 18 HP Kohler twin cylinder with cast iron cylinder, pressure lubrication and mechanical fuel pump.

Starting System: Electric by key switch operation with safety interlocks on parking brake and blade drive clutch.

Tires: Front 11 x 4.10 x 5 smooth tread. Rear 20 x 10 x 8 turf savers.

Capacities: Fuel - 4.8 gallons total (dual tanks) with fuel gauges.

Hydrostat oil tank - 3 quart with inline 10 micron filter.

Hydrostat oil recommendation - name brand SAE (10-W-30) motor oil.

Dimensions: Width - 60" Height -

45" Length - 72"

Weight - 665 lbs.

NOTE: Additional information provided in service instruction under the individual component.

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE........................

SET UP AND SERVICE

1. Seat assembly instructions.

2. Upper control lever installation.

3. Mower deck installation.

4. Deck leveling procedure.

5. Final preparation.

Page 6

Page 7

SEAT ASSEMBLY INSTRUCTIONS

1. Assemble seat as shown in picture. Do not fully tighten the bolts which secure left and right arm rest brackets to seat bottom until seat back and tool box are installed. This will aid alignment of all parts.

2. Place seat assembly on rear body cover, connect seat safety switch.

3. Insert the (2) rear studs of the seat slide into the rear holes of the body cover. Firmly hold seat assembly against body cover with one hand while rear body is raised to fully open position. Continue to hold seat against body to prevent damage to seat safety switch wiring.

4. Install (1) flat washer and (1) nylok nut on (1) of the rear studs extending through body cover and seat frame, tighten a few threads to hold seat assembly in place.

5. Position seat on front holes and install all remaining washers and nylok nuts.

Tighten all nuts fully.

SEAT ASSEMBLY INSTRUCTIONS

SEAT PACKAGE

• NOTE: HARDWARE FOR CONTROL LEVER ASSEMBLY

UPPER CONTROL LEVER INSTALLATION

1. Raise rear body cover to fully open position.

2. Install flat washer on right hand swivel plate weldment. Next install right hand control lever, then second flat washer.

3. Push control lever into the neutral slot and install (2) cup washers,

(1) flat washer and jam nut. (See Illustration)

4. Tighten jam nut. Proper tightness or tension on jam nut is achieved when swing out movement of upper control levers requires some pressure.

Levers should not fall to the side or be sloppy in movement.

5. Repeat above procedure on left side.

Page 8

MOWER DECK INSTALLATION Page 9

1. To remove front body from chassis, disconnect headlights and remove acorn hut in middle of body.

2. Install rear hanger rods on lift frame, as shown in the diagram. Slide lift plate on hanger rods, small holes in lift plate will face rear of mower, and start nylok nuts on each hanger rod until approximately 1/4 inch of threads are exposed.

3. Position mower deck under chassis.

4. Place lift lever in 3rd hole from highest cut, position #5 on quadrant.

5. Using (1) of the deck support rods, insert the rod at the corner of the lift frame and the front of the mower chassis in the groove provided on the lift frame. Pry backwards on the lift frame enough to connect the brake link into the hole on the tab of the lift lever. This will allow for belt installation in step #7.

6. Raise mower deck at the rear and slide (1) of the deck support rods through the mower deck lift plate and the tabs of the mower deck. "Note" A length of 2 x 4 board turned on end and placed under the mower deck for support will make this task easier if the installation is being done by one person, due to the weight of the mower deck.

7. Raise front of mower deck and slide front support rod through lift frame and tabs on mower deck. Install hair pin clips on front and rear support rods.

8. Move lift lever to lowest cut position, install engine to mower deck drive belt on top center pulley. Check belt routing after installation to make certain that belt is centered in groove of electric clutch pulley.

9. Move lift lever toward high cut position and remove brake link from hole on lift lever.

10. Install deflector chute on mower deck by using nuts and bolts provided.

Never operate mower without deflector chute in place.

Page 10

MOWER DECK LEVELING PROCEDURE

Leveling Principals:

A. There are a total of (4) threaded adjusters which will control the attitude or pitch of the mower deck. The adjusters have lock nuts on the bottom which can be turned up or down to raise or lower the front and rear of the mower deck. Deck should be level or pitched slightly higher in rear.

Leveling the Deck:

A. Place the mower on a smooth level surface, check tire pressures to insure the mower has a correct stance. Inflate tires as required:

Front - (40 - 46 lbs. maximum)

Rear - (20 - 24 lbs. maximum)

B. Remove the discharge chute from the mower deck. Rotate or turn each outer blade tip to align with the edge of the deck or side to side.

C. Measure from the surface up to the bottom of the blade tip on the discharge side of the mower deck. Retain this measurement. Move to the opposite side and check that measurement is the same. If adjustment is required, turn the nut on the bottom of the front threaded adjuster up or down until both side to side measurements are equal. Retain measurement.

D. Rotate or turn both outer blades to align with the deck in a front to rear manner. Move to the left rear threaded adjuster, "left rear is designated from operator position on the mower". Turn adjuster nut up or down until rear of mower deck is positioned level to l/8th of an inch higher than the side to side measurement. At this time, the mower deck will hang or be suspended on (3) points. Move the right rear adjuster and take out the slack which will be present by turning adjuster lock nut up. Confirm the measurement used on the left rear of the deck. Re-install discharge chute.

NOTE:

This will place the mower deck in a base measurement position. Additional adjustment may be required to achieve desired cut for the type of grass or conditions being mowed.

(1) - (2) Adjustment Points

Page 11

FINAL PREPARATION

1. Remove battery from chassis.

2. Fill each cell with electrolyte (acid) to ring at bottom of fill cap.

3. Allow battery to sit for (10) minutes, re-check acid level and top off any cells that are low.

4. Trickle charge battery using a charger of less than (6) amps until all cells are gassing freely. Hydrometer readings may be taken, if desired.

5. Install permanent battery caps and wash any accumulated acid from battery before re-installation on chassis.

6. Observe proper battery polarity when re-connecting leads on chassis. Always connect positive lead first.

Engine Service:

1. Final preparation of engine should be completed using engine service manual provided with mower.

Initial Start and Hydrostat Transmission Check:

1. Final hydrostat checks have been performed at the factory, however, it is necessary to check that the pressure relief bypass on each hydrostatic transmission is completely released before attempting to drive mower.

2. Each hydrostat has a bypass relief pin located at the bottom front of each hydrostatic unit. A bypass keeper is provided to allow the mower to be rolled around without complete servicing of the unit. To accomplish this, the bypass keeper must be positioned to depress the bypass relief pin.

After the use of bypass keeper, each must be removed from the bypass relief pin before the unit can be operated.

Page 12

OPERATION INSTRUCTIONS

The safe and successful operation of the Model 502 will depend upon the operator having the correct knowledge of all controls used on the mower and making good judgments about the terrain to be mowed. Never allow anyone to operate the mower without complete knowledge of all controls and their functions.

Sound judgment by the owner will prevent accidents.

Controls and their functions. All controls described from operators position.

PARKING BRAKE:

The parking brake used on the Model 502 is designed to hold the mower from moving and is not intended for use in stopping the mower while it is in motion. An additional safety feature of the parking brake is that the engine cannot be ''•'-. started unless the brake is applied.

THE HYDROSTATIC DRIVE SYSTEM:

Allows the mower to turn on its own axis (zero radius). Each lever controls one side of the mower. The pressure required to operate the mower is very light and a minimum of 1/2 hour should be spent simply driving the mower in a non-mowing application to gain the confidence necessary to mow like a pro.

LEVER MOVEMENTS:

No shifting or clutching required.

TO GO FORWARD:

Release parking brake. From neutral position, gently puch both drive levers forward; to increase speed, move levers farther forward.

TO GO BACKWARD:

From neutral position, gently pull both drive levers toward you.

TURNING:

Turning is controlled by moving one drive lever slightly forward or rearward of the other. To turn left, move left lever rearward of right lever. To turn "square corners" move lever of desired direction to neutral. To turn on mower's own axis

(zero radius) reduce speed and move one lever to reverse position and the other to forward position.

BRAKING:

To brake mower, move both levers in direction opposite of travel, release levers to neutral, set parking brake. When stopping on incline, it may be necessary to hold slight pressure on levers in direction opposite of slope until parking brake is set.

GROUND SPEED:

Ground speed (controlled by movement of hand levers) must be carefully controlled for safety and best mowing results. Never operate at high speed in unfamiliar areas or on slopes.

CHOKE CONTROL LEVER:

Used to start a cold engine. (Engine has not been operated for a length of time)

Located on control panel to operators right.

Page 13

OPERATION INSTRUCTIONS (continued)

THROTTLE CONTROL LEVER:

Controls engine speed. (Engine should be operated at full throttle when use.d in a mowing application, this will insure adequate cooling of the engine as well as maintaining mower deck blade speed) Located on control panel on operators right.

MOWER DECK CUT HEIGHT LIFT LEVER:

Controls the cutting height of the mower deck. Seven positions of adjustment in which the very top, or highest notch, is used for transporting the mower in a non-mowing situation. Located in front of operator on the right side of mower.

BLADE DRIVE:

To engage the mower deck cutter blades, lift switch up lightly and push forward. To disengage blades, pull switch backward. Switch is clearly marked "on and off".

LIGHT SWITCH:

The headlights are activated by pushing the switch forward. Failure to turn off the lights, once the engine is stopped, will result in rapid discharge of the battery.

FUSE BLOCK:

Protection of the electrical system is by (1) 15 AMP fuse. To remove the fuse for inspection, just simply lift upon fuse block lid. If fuse burns quickly, please consult your dealer for inspection and repair. Never attempt to bypass the fuse by any method.

Page 14

CARE AND MAINTENANCE - MODEL 502

This portion of the Model 502 owners manual deals with normal service items which can be performed by the owner. Please remember that if you are in doubt as to the correct service procedures to be followed, these and other service situations can be handled by a Dixon ZTR

Dealer who is familiar with the service of your mower.

NOTE:

, The disassembly and repair of the Sundstrand BDU 10 L hydrostatic transmissions is best left to a qualified Sundstrand repair and service facility. These repair centers are equipped with the necessary tools and service information to accurately perform all service required. Due to the precision nature of these transmissions, field repairs cannot be recommended.

MAINTENANCE SCHEDULE:

To insure a long and trouble free service life on all the components used on the Model 502 a regular and thorough maintenance schedule should be followed.

As with any type of precision made equipment, a certain amount of initial bedding in or seating of the components will take place. The following items should be checked after the first (10) hours of operation and on a weekly basis, or each (40) hours of use:

1. Drive system chains, belts and controls.

2. Mower deck belts

3. Tire pressures.

4. Hydrostat oil.

5. Tightness of all nuts and bolts.

Refer to engine service manual provided with your mower for maintenance schedules and procedures to be used on the engine.

Page 15

CARE AND MAINTENANCE - MODEL 502

MOWER DECK SERVICE: CUTTER BLADE REMOVAL - BELT TENSION.

"CAUTION" The removal of the cutter blades for either sharpening or replacement is best accomplished by removing the deck assembly from the mower. Do not attempt to raise or lift the front of the mower unless proper safety equipment is available to support the mower. If you do not have the necessary equipment, entrust this task to your dealer.

DECK REMOVAL:

1. Remove front belt access cover from body. Stand in front of the mower, grasp lift quadrant lever with left hand. Move lever to align with the (5th) hole from the bottom on the quadrant plate. At this time, connect *• brake link into hole on lift lever. Move lift lever toward lowest cut position and remove belt from the top of center deck hub assembly.

2. Remove the hair pin cotters from the ends of the deck support rods. Slide deck support rods from deck while supporting deck assembly with a suitable brace, or by the use of an assistant to hold the deck while rods are removed. Slide deck from under chassis.

3. Reverse procedure to re-install deck assembly.

CUTTER BLADE REMOVAL:

1. Carefully place deck assembly in a manner which will allow access to the blade bolts. Hold blade from turning while bolt is removed from the center of each hub assembly. "Caution" wear heavy, thick gloves when holding onto cutter blade, avoid the sharp edge of the blade.

2. When re-assembling blades to hub assemblies, fully tighten blade bolts to a minimum of (35 ft. lbs.) torque. The use of air impact tools is recommended for installation to insure bolt tightness.

BELT TENSION:

1. The engine to mower deck drive belt on the Model 502 is automatically held in proper tension by springs which push the deck assembly forward, and does not require any additional adjustment to be made. Both the belt and the idler system should be periodically inspected due to the nature of the job they perform.

2. Serpentine deck belt tension is maintained by a manual adjustment rod which is located on the top of the mower deck assembly. Proper belt tension is critical to insure cut quality. If adjustment is required, tighten lock nut on adjustment rod until belt free play or movement between pulleys is approximately 1/4 of an inch.

Page 16

CARE AND MAINTENANCE - MODEL 502

DRIVE SYSTEM ADJUSTMENTS: Hydrostat Chains - Belts - Cable - Controls

Refer to the diagrams on the following pages for the location of adjustment points.

Step 1. Loosen the front and rear mounting bolts of the hydrostat, turn the rear adjustment bolt downward, which will tension the final drive chain to the rear wheel. Chain is correctly tensioned when at a point mid-way between the sprockets chain free play or movement is approximately l/16th of an inch up and down. Re-tighten mounting bolts.

Step 2. Loosen the (2) bolts which secure the front chain adjustment, refer to diagram, turn the front adjustment bolt downward using a 5/16th alien •; wrench. Correct tension is as in step #1. Re-tighten bolts.

Step 3. Repeat above procedures on opposite hydrostat.

Step 4. Tighten the (2) J-bolts on the T-box mounting plate until each belt has l/8th to l/4th of an inch free play or movement at a mid-point between the pulleys on the hydrostats and T-box.

Step 5. Position parking brake lever in the off or disengaged position. This will allow the belt idler used on the engine to T-box to swing fully and apply tension to the belt. At this time, check that the cable which pulls the idler to a neutral position has approximately 1-1/2 to 2 inches of free play. If adjustment is required, loosen the lock nuts on the cable block and turn cable sleeve in or out to achieve desired measurement. Re-tighten lock nuts. "NOTE" Cable must have the above dimension with parking brake released or drive belt may slip, causing a loss of power.

Step 6. Neutral adjustment must be checked at this time which will require the engine to be started and the parking brake released. Swing upper control levers outward and into neutral slots, start engine, use caution when releasing parking brake as mower may tend to creep or move prior to re-adjustment of neutral settings on each hydrostat. If adjustment is required, loosen lock nuts at each end of the control rods and back off the tension bolt on each spring block. Turn control rod in or out until neutral is obtained on each hydrostat. Re-tighten lock nuts and tension bolts on spring blocks.

Step 7. Stop engine, move levers to drive position. Lightly push each upper control lever forward until a resistance is felt on the lever. At this time, check that the forward lever stops are hitting against stop block. "NOTE: Do not allow levers to travel to completely forward without hitting stop blocks as damage to hydrostats could result. If adjustment is required, loosen lock nut on lever stop and turn bolt in to allow lever to hit the stop before resistance is felt in the hydrostat.

Step 8. Start engine. Drive mower forward and observe driving condition. If mower tends to pull to either side, re-adjust lever stop on fast side to slow that hydrostat down and even out the ground speed. Do not speed up slow side as over stroking of the hydrostat could result in damage to the unit. If upper control levers are slightly off-set after this adjustment, they can be realigned by bending them into alignment.

(1) HYDROSTAT MOUNTING BOLTS

(2) THREADED ADJUSTERS TO TENSION CHAINS

Page 17

(1) ADJUSTMENT POINTS FOR T-BOX BELT TENSION Page 18

(1) Forward lever stop adjustment Page 19

Page 20

CARE AND MAINTENANCE - MODEL 502

LUBRICATION:

CHASSIS AND MOWER DECK: Number of grease zerks used (2)

LOCATIONS: (1) each front wheel caster

SERVICE INTERVALS: Every (50) hours of operation

RECOMMENDED GREASE: Name brand wheel bearing or multi-purpose grease

CAUTION: The use of compressed air pressure greasing methods is not recommended as damage to seals and bearings could occur.

Using a hand pressure grease gun, lubricate each front caster to allow even distribution of grease within the caster, rotate or spin each front wheel caster after (3) pumps of the grease gun. Repeat process until the appearance of grease is noted completely around each caster.

DRIVE CHAINS:

RECOMMENDED LUBRICANT:

SERVICE INTERVALS:

Primary and final drive

Name brand aerosol chain spray

As required for operating conditions

Remove excess dirt from chains, lubricate each chain completely by applying the lube to the inside of each connecting link. Applying lube directly to the top of the chain will only allow the lube to be thrown off in operation. The chains are of special construction which use o-rings to seal a factory lubricant inside of the chain.

Additional lubrication will cushion chain to sprocket engagement. Avoid the use of any lubricants which may damage the o-rings used on this chain.

ENGINE OIL CHANGES: "Refer to separate owners manual furnished by the OIL

RECOMMENDATIONS: engine manufacturer."

SERVICE INTERVALS:

Please dispose of used oils at proper collection centers. Protect your environment.

' • " * • ' " , • " .

Page 21

CARE AND MAINTENANCE - MODEL 502

CLEANING THE MOWER:

A clean machine is a source of pride to the owner. However, cleaning by use of high pressure commercial washes is not recommended. The high water pressure, combined with solvents or alkaline detergents, can lead to corrosion of electrical components or damage to the sealed bearings used on your mower. A better approach is the use of mild household soaps and low water pressure. A stiff brush can be used to loosen excess grass and dirt build up. Avoid directing water pressure onto the mower deck hub assemblies, electrical wiring and engine components such as air filter openings. Never wash or clean the Sundstrand BDU 10 L hydrostatic transmissions, as damage to these units could result. To remove excess water which accumulates during washing of the mower either blow off with compressed air, if available, or start the engine, allowing a long enough operation time to dry thoroughly. It is advisable to engage the mower deck for a short time to disperse all water from pulleys and belts.

Please help protect the environment by avoiding all chemicals which may damage or cause harm to plants and animals in your area.

TROUBLE SHOOTING

Page 22

MOWER CUT QUALITY:

There are many variables that can effect the cut quality of any multi blade mower. Type and condition of grass, ground speed, blade speed, and conditions are some of the variables that interact creating differences in cut quality results. In most cases, a smooth, even cut will be achieved without further adjustment.

The Trouble Shooting Chart suggests practices and adjustments that may be helpful in improving cut quality. Your Dixon ZTR Dealer is also available to provide assistance to you.

SITUATION

Poor cut quality

Poor cut quality

Poor cut quality

Poor cut quality

Poor cut quality

Poor cut quality

Poor cut quality

Poor cut quality

CAUSES

Ground speed

Loose belts

Grass build-up under mower deck

Engine RPM too low

Dull or bent blades

Unlevel mower deck

Improper blades

Uneven tire pressures

REMEDY

Reduce mowing speed

Adjust per operators manual

Increase engine RPM to maximum

Sharpen or replace as required

Adjust per operators manual

Clean out underside of mower deck

Replace with original equipment blades which are designed for the

Model 501

Check and adjust as required per operators manual

DRIVE SYSTEM:

TROUBLE SHOOTING

SITUATION

Mower pulls to one

Loss of drive power on one side or the other

CAUSES

Drive adjustment

T-Box belts slipping

Loss of power on both wheels after being operated for a length of time

Poor driving performance

Oil leaks

Belt from engine to

T-Box is slipping

Operation of mower

Loose or missing hose clamps

Page 23

REMEDY

Adjust per operators manual

Consult your dealer for repair

Adjust per operators manual

Consult your dealer for repair

Adjust per operators manual

Consult your dealer for

Review operators section of owners manual

Tighten or replace as required

TROUBLE SHOOTING

Page 24

ELECTRICAL SYSTEM:

SITUATION

Starter will not

Starter will not turn engine over

Battery discharge

Battery discharge

Battery discharge

Electric clutch will not engage mower deck blades

Head lights do not operate

CAUSE Blown fuse

Dead battery

Poor connections on battery

Battery water low

Wrong battery installed in

Engine electrical system not functioning correctly

Engine being operated at too low an RPM

Low battery condition

Poor connections on clutch switch

Broken wiring

Poor connection on lights

Broken wiring

Bad bulb

REMEDY

Inspect and replace fuse

If fuse continues to burn consult your dealer for repair

Charge battery

Tighten or renlace as required

Have electrical system checked by your dealer

Increase engine RPM

Consult your dealer for information

Repair or replace as required

Consult your dealer for repair

Repair or replace as required

Note: obvious first and then move onto the more complicated parts used. Poor battery than component failure.

DECK ASSEMBLY (MODEL 5O2)

Body Assembly (Model 502)

T-BOX AND HYDROSTATS ASSEMBLY (MODEL 502)

CHASSIS ASSEMBLY (MODEL 502)

FUEL & HYDRAULICS TANKS & FITTINGS ASSEMBLY (MODEL 502)

1 a

1

C a t

WIRING ASSEMBLY (MODEL 502)

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•

1991 ZTR 502 Parts List

1300 Belt 36" Mower Drive

1384 Tank Mount Bracket (Short)

1385 Tank Mount Bracket (Long)

1469 LH Slide Angle

1470 RH Slide Angle

1471 Seat Slide

1657 Spring - Belt Idler

1668 Drive Pulley

1675 Clutch Anchor

1682 L-Rod

1701 Wheel/Deck Hub Bearing

1714 T-Box Drive Belt

1715 Rear Wheel & Tire

1732 Pulley - T-Box

1733 Pulley - T-Box Drive

1734 Pulley Hydrostat

1739 Hydrostat Idler Bracket

1743 Hydrostat Flat Idler Pulley HD

1744 Hydrostat Drive Belt

1745 Pulley

1801 Seat Strap

2128 Sleeve

2164 Support Sprocket Spacer

2173 Bushing

2823 Oil Drain Assembly

3005 5/16"-18 UNO Hex Nut

3006 5/16"-18 X 1 1/4" HH Bolt Gr 5

3007 1/4" -20 UNC Hex Nut

3008 1/4" ID X 3/4" OD Flat Washer

3009 5/16"-18 UNC X 1 3/4" HH Bolt Gr 8

3014 l/4"-20 UNC X 3/4" HH Bolt Gr 5

3019 5/16" Helical Lock Washer

3020 5/16" Std Flat Wahser

3023 1/4" Helical Lock Washer

3029 Front Grommet

3031 5/16"-18 UNC Acorn Nut

3033 1/2" SAE Flat Washer

3048 3/8"-16 UNC X 1 1/2" HH Bolt

3052 3/32" Dia X 1" Cotter Pin

3054 3/16" Dia X 1" Roll Pin

3056 5/16" Fender Washer

3057 3/8" Std Flat Washer

3061 5/16"-18 UNC X 3/8" Soc Set Screw

3066 3/16" Std Flat Washer

3072 1/8" X 1 3/4" Hair Pin Cotter

3074 5/16"-24 UNF Hex Jam Nut

3081 #6-32 UNC Hex Nut

3082 #6 Lock Washer

3087 5/16"-18 UNC X 3/4" HH Bolt Gr 5

3091 l/2"-20 UNF Hex Lug Nut

3093 5/16"-18 UNC X 1" HH Bolt Gr 5

3106 1/4" X 1" Spirol Pin

3118 Disc Spring

3130 1/2" COntact Bellville Spring

3133 #8-32 X 1/2" TR 3 Screw

3145 #6 Std Flat Washer

3161 5/16"-24 UNF LH Thread

3163 1/2" Int Tooth Lock Washer

3169 3/8"-16 X 1" HH Bolt Gr 5

3182 Flip Lock Bushing

Page 31

3186 #12-24 X 3/4" Drill & Tap Screw

3187 #10-32 Hex Nut

3188 #10 Ext Tooth Lock Washer

3193 Washer .43 X 1.38 X .25

3195 Face Nut l/2"-27

3196 Face Nut 7/16"-28

3198 l/4"-20 Wing Nut w/Nylok

3199 5/16"-18 X 2 1/4" HH Bolt Gr 5

3204 l/4"-20 Hex Nut w/Nylok

3205 5/16"-18 Hex Nut w/Nylok

3206 3/8"-16 Hex Nut w/Nylok

3207 l/2"-13 Hex Nut w/Nylok

3208 #10-24 Hex Nut w/Nylok

3220 7/16"-20 X 2 3/4" HH Bolt Gr 5

3224 5/16"-18 X 1" HH Bolt w/Nylok Gr 5

3225 3/8"-16 X 2 1/4" HH Bolt

3231 9/16" Std Flat Washer

3235 #10-24 X 5/8" Phillips Pan Hd Screw

3243 5/16"-18 X 3 1/4" HH Bolt Gr 5

3245 3/8"-16 Thin Profile Nylok Nut

3247 #6-20 X 1/2" Phillips Pan Hd Screw

3248 5/16" ID X 1/8" Thick Washer

3249 5/8" Int Tooth Lock Washer

3256 Snap Ring

3257 7/16" Int Tooth Lock Washer

3258 5/16"-18 X 4 3/4" HH Bolt Gr 8

3259 5/16"-18 X 5" HH Bolt Gr 8

3260 l/4"-20 X 1/2" HH Bolt Gr 5

3262 3/4"-16 Thin Profile Nylok Nut

3263 5/8"-ll Thin Profile Nylok Nut

3264 5/16" Disc Spring HD

3265 #10-24 X 3/4" Truss Hd Phillips Screw

3266 1/4" Int Tooth Lock Washer (Not Shown)

3267 5/16"-18 X 1 3/8" HH Bolt Gr 5

3268 3/8"-24 X 1 1/4" HH Bolt Gr 8 w/Nylok

3269 5/16"-18 X 1" Soc HB

3270 5/16"-18 X 3" Soc HB

3274 #6-32" X 1/2" Truss Hd Ph Screw

3281 Clip

3298 Washer .515 X .874 X .031

3300 Foam Pad

3315 1/2-20 Hex Nut W/Nylok

3318 3/8-16 X 2 1/4: HHB Gr 8

3319 Idler Shock Mount

3331 M6 X PI X 8MM HHB Gr 8.8

3338 M8 X 1.25P HWH Tap Screw

3343 Hub Bolt-Drilled

3344 Grease Zerk

3347 Washer 1.033 X 1.5 X .06

3348 5/16-18 X 3/4" Tap Screw

3511 Adhesive Bumper Pad

3531 Decal - OPERATING INSTRUCTIONS

3536 Decal - DANGER

3554 Fuel Cap/Gauge

3558 2 Gal Tank w/Cap-Gauge

3585 Decal - CUTTING HEIGHT

3589 Spacer (Electric Clutch)

3590 Key 1/4" Sq X 1/2"

3599 ISO Mount Assembly

3600 Rebound Mount

1991 ZTR 502 Parts List

3601 Load Mount

3602 Spacer Tube

3603 ISO Mount Insert

3617 Decal - DIXON

3635 Tee-Fuel Line

3644 Fuel Line 5 1/2"

3645 Fuel Line 18"

3646 Fuel Line 20"

3649 Fuel Line Clamp

3653 Floor Pad Left Front

3654 Floor Pad Right Front

3655 Floor Pad Left Rear

3656 Floor Pad Right Rear

3669 Decal - CAUTION

3695 J-Bolt

3702 Pulley

3705 Velcro Strip - Hook

3706 Velcro Strip - Latch

3710 Handle Grip

3711 Hour Meter

3712 Handle Grip

3713 Foam Tube

3715 End Cap

3717 3/8" Hose Clamp

3718 5/8" Hose Clamp

3719 Heat Shield Deflector

3720' Tie Wrap

3721 Decal - DANGER

3723 Decal - RESERVOIR

3731 Control Panel

3747 Deflector Spring

3772 By-Pass Keeper

3773 LH Rod End

3774 RH Rod End

3791 Model Decal

3812 Ignition Nut

3813 Protective Cap

3848 Cap Nut

3852 Spring

3876 Caster Spring

3878 Caster Plug

3887 Chrome Lug Nut

3890 Bearing

3896 Hub Cover

3897 Decal - DIXON

4013 Wire Tie

4075 15 Amp Fuse

4124 Solenoid w/Hardware

4197 Ignition Switch

4198 Blade Drive Clutch Switch

4199 Light Switch

4201 Switch Key (Used w/4197)

4216 Battery Ground Cable

4217 Battery

4242 Deck Switch

4256 Utility Box

4274 Choke Cable

4276 Headlight Assembly

4446 Cover - Flex Guard

4453 Access Cover Assembly

Page 32

4467 Fuse Holder

4568 Throttle

4569 Lower Wiring Loom

4687 Battery Cover Assembly

4701 Michigan Seat 50"

4714 Upper Wire Loom

5070 Key 3/16" Sq X 7/8"

5085 Brake Band

5087 Spacer 3/8" X 1/2"

5101 Brake Link

5112 Key-Sq 3/16" X 1 1/2"

5170 Spring

5283 Link

5500 T-Box

5501 Mount Plate

5502 Mount Shim

5503 T-Box Guide Left

5504 T-Box Guide Right

5507 Brake Plate Bracket Left

5508 Brake Plate Bracket Right

5510 Sprocket 10T

5511 Sprocket 30T

5512 Sprocket 10T w/Brake Drum

5514 Brake Rod 5/16" X 2 5/8"

5515 Idler Cable

5516 Swivel

5522 Brake Link Right

5525 Brake Link Left

5530 Control Pivot Shaft

5531 Adjustable Collar

5537 Control Arm Bracket

5539 Hydrostat Support Rod

5540 Neutral Adjust COllar

5549 Brake Handle

5550 Hydrostat Left

5551 Hydrostat Right

5553 Spacer

5554 Spacer

5558 Hose Fitting

5560 Elbow - Male

5561 Adapter-Male (For 3/8" ID Hose)

5562 Adapter-Male (For 5/8" ID Hose)

5563 Tee-Cast Iron

5564 Filter Head

5565 Oil Filter

5566 Hose 3/8" X 8"

5567 Hose 3/8" X 14"

5568 Chain-Primary (Short)

5575 Shaft 3/4" X 8 1/4"

5576 Spacer

5577 Drive Chain-Secondary

5580 Jack Shaft Bracket Left

5581 Jack Shaft Bracket Right

5582 Pivot Shaft Bracket

5583 Hose 5/8" X 19"

5585 Tab

5591 Reservoir Assembly

5595 Hose 5/8" X 14"

5608 Brake Arm Left w/Bushing

5609 Brake Arm Right w/Bushing

1991ZTR 502 Parts List

5615 Connector/Elbow Assembly

5623 Electric Clutch

5624 Tank Cap

5627 Left Fan

5628 Right Fan

6011 Mower Deck Bearing

6100 Outer Shaft Key

6101 Center Shaft Key

6111 Deck Drive Belt

6113 Blade Washer

6168 Trash Guard

8171 Frame 502

8174 Upper Body Asm 502

8176 Lower Body Asm 50"

8177 Caster Tire 50"

8178 Caster Rim 50"

8179 Caster Bearing 50"

8180 Bearing Retainer 50"

8188 Wiring Kit 50"

8328 Greasable Shaft 9225

8329 Greasable Shaft 9224

8572 Headlight Bulb

8573 Headlight Bulb Socket

8576 Rear Rim

8577 Rear Tire

8648 Chain Connecting Link

8689 Mower Blade 50" Std

9017 Seat Frame

9023 Engine Mount Plate - Fwd

9024 Engine Mount Plate - Rear

9031 Lift Tube

9035 Lift Frame

9049 Lift Bushing Bracket

9055 Lift Cam Left

9056 Lift Cam Right

9065 Lift Handle

9066 Lift Shaft

9067 Control Rod

9076 Seat Frame Cable

9082 Seat Frame Pivot Rod

9089 Control Rod Assembly

9098 Hanger Rod

9110 Tank Cover

9142 Rear Lift Rod

9156 Right Swivel Plate

9157 Left Swivel Plate

9158 Control Lever w/Grip Left

9159 Control Lever w/Grip Right

9190 Sprocket Assembly

9212 Spring (Belt Tensioner)

9219 Deck Hub

9226 Deck Hub Sub Assembly

9228 Deck Hub Bearing Spacer

9230 Outer Hub Assembly

9231 Center Hub Assembly

9242 Pulley Guard

9254 Lift Plate

9261 Deflector

9262 Rod

9264 Deflector Sub Assembly

9273 Mower Deck

9274 Mower Deck Assembly

9276 Idler Arm

9298 Caster Tube Assembly

9300 Wheel Hub Assembly

9309 Caster Axle LH

9310 Caster Axle RH

9312 Bumper Weldment

9315 Caster Wheel & Tire

Page 33