MTD 17aa5abp766-02-06 Parts Manuals

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OPERATOR’S MANUAL

ZERO TURN TRACTOR

Model Numbers

RZT 42 w/42" Mower Deck RZT 50 w/50" Mower Deck

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

Warning:

covered, brush-covered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator. In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized service dealer or contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-0019.

PRINTED IN U.S.A.

This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-

Troy-Bilt LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

FORM NO. 769-02165B

(2/06)

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TABLE OF CONTENTS

TRACTOR PREPARATION ................................................................................................... 2

IMPORTANT SAFE OPERATION PRACTICES .................................................................... 4

SAFETY DECALS AND LABELS ........................................................................................... 7

RECORDING MODEL AND SERIAL NUMBER INFORMATION ........................................... 9

CUSTOMER SUPPORT ......................................................................................................... 9

SLOPE GAUGE .................................................................................................................... 10

SECTION 1: CONTROLS AND FEATURES ........................................................................ 11

SECTION 2: OPERATION ................................................................................................... 15

SECTION 3: ADJUSTMENTS .............................................................................................. 22

SECTION 4: MAINTENANCE .............................................................................................. 23

SECTION 5: MOWER DECK ............................................................................................... 28

SECTION 6: PARTS LIST .................................................................................................... 34

WARRANTY ......................................................................................................... BACK PAGE

TRACTOR PREPARATION

Remove the upper crating material from the shipping pallet, and cut any bands or tie straps securing the tractor to the pallet.

Use the lift handle to raise the deck to its highest position; engage the transmission bypass rods (Refer to SECTION 1, CONTROLS AND FEATURES); and carefully roll the tractor off the shipping pallet. Disengage the bypass rods.

INSTALL OPERATOR’S SEAT

The operator’s seat was partially inserted into the seat pivot bracket for shipping purposes. To install the seat proceed as follows:

1. Cut any straps securing the seat assembly and the drive control levers. Remove any packing material.

NOTE: The seat is partially inserted into the slots of the seat pivot bracket. If the seat does not become disengaged from the pivot bracket when removing the packaging material, the pivot bracket may be pivoted upward and the seat pushed into place as described in step 6. If the seat does disengage the pivot bracket, install the seat as instructed in steps 2 through 6.

2. Pivot the seat pivot bracket partially upward. Refer to Figure 1.

3. Note the grooves in the seat adjust spacers attached to the bottom of the seat, then lift the seat and position above and to the rear of the pivot bracket.

4. Align the grooves in the seat adjust spacers with the sides of the adjustment slots in the pivot bracket.

5. Slide the seat adjust spacers into the slots of the pivot bracket.

6. Continue to push the seat forward in the pivot bracket until the front/left shoulder bolt of the seat assembly passes forward of the stop bracket on the seat pivot bracket. See Figure 1.

Use the seat adjust lever to adjust the seat position. Refer to "Adjusting the Operator’s Seat" in Section 3 for seat adjustment instructions.

Seat

Adjust

Spacer

Front/Left

Shoulder Bolt

Adjustment

Slots

Stop Bracket

Figure 1

Seat Pivot Bracket

Seat Adjust Lever

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POSITION DRIVE CONTROL LEVERS

The drive control levers of the tractor are lowered for shipping purposes. To accomplish this, the flange lock nut, hex screw, and flat washer normally used to secure each control lever to its pivot bracket are removed. The hardware is then installed in the slotted hole of each control lever for shipment. The control levers must be moved to their operating position. To reposition the control levers for operation, proceed as follows:

• Remove the hex screw, flat washer, and flange lock nut from the slot of one of the drive control levers.

• Lift and swing that control lever upward until the slotted hole in the lever bracket aligns with one of the holes in the pivot bracket. Refer to Figure 2.

• Slide the flat washer onto the hex screw. From the outside, insert the hex screw w/washer through the control lever slot and the hole of the pivot bracket. Secure with the flange lock nut. See Figure 2.

Flange Lock Nut

Control Lever

Lift control lever upward

The tractor is shipped with an activated sealed battery, with the positive battery cable factory connected. The negative cable must be connected.

NOTE: Make sure the ignition switch is in the "OFF" position before attaching the battery cable.

1. Pull the protective cap off the negative terminal of the battery, and remove the hex cap screw and nut from the free end of the negative battery cable.

2. Connect the negative battery cable (heavy black) to negative terminal (NEG) of the battery using the hex cap screw and nut. Slide the black terminal cover over the negative terminal of the battery.

MODEL RZT42 ONLY Remove The Chute Stop

• Locate the chute stop on the right side of the mower, between discharge chute and cutting deck.

• While holding the discharge chute up, rotate the chute stop clockwise and remove.

• Discard the chute stop.

Flat Washer

Hex Screw

Pivot

Bracket

Slotted

Hole

Figure 2

• Note the relative position of the control lever to the pivot bracket, then repeat the previous steps to reposition the other control lever in approximately the same position.

• Refer to "Adjusting the Drive Control Levers" in Section 3 for instructions on final adjustment of the levers.

CONNECT THE BATTERY

WARNING: Battery posts, terminals and related accessories contain lead and lead compounds. Wash hands after handling.

Chute Stop

Figure 3

MODEL RZT50 ONLY Lower Deck Discharge Chute

WARNING: Never operate the mower deck without the discharge chute installed and in the down position.

Locate the cable tie holding the deck discharge chute in the up position for shipping purposes. Cut the cable tie and lower the discharge chute.

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WARNING

• The engine exhaust, some of its constituents, and certain vehicle components contain or emit chemicals known

to the State of California to cause cancer, birth defects or other reproductive harm.

• This unit is equipped with an internal combustion engine and should not be used on or near any unimproved

forest-covered, brush-covered, or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator.

• In the State of California, the above is required by law (Section 4442 of the California Public Resources Code).

Other States may have similar laws. Federal laws apply to federal lands. A spark arrester muffler is available at your nearest engine authorized service center.

IMPORTANT

THIS SYMBOL POINTS OUT IMPORTANT SAFETY INSTRUCTIONS WHICH, IF NOT FOLLOWED, COULD ENDANGER THE PERSONAL SAFETY AND/OR PROPERTY OF YOURSELF AND OTHERS. READ AND FOLLOW ALL INSTRUCTIONS IN THIS MANUAL BEFORE ATTEMPTING TO OPERATE YOUR UNIT. FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY. WHEN YOU SEE THIS SYMBOL— HEED ITS WARNING.

Your lawn mower was built to be operated according to the rules for safe operation

in this manual. As with any type of power equipment, carelessness or error on the

DANGER

I. GENERAL OPERATION

1. Read, understand and follow all instructions in the manual and on the machine before starting. Keep this manual in a safe place for future and regular reference.

2. Only allow responsible individuals familiar with the instructions to operate the machine. Know the controls and how to stop the machine quickly.

3. Do not put hands or feet under the cutting deck or near rotating parts.

4. Clear the area of objects such as rocks, toys, wire, etc. which could be picked up and thrown by the blades. A small object may have been overlooked and could be accidentally thrown by the mower in any direction and cause injury to you or a bystander. To help avoid a thrown objects injury, keep children, animals, bystanders and helpers at least 75 feet from the mower while it is in operation. Always wear safety glasses with side shields or safety goggles during operation or while performing an adjustment or repair, to protect eyes from foreign objects. Stop the blades when crossing gravel drives, walks or roads.

part of the operator can result in injury. This lawn mower is capable of amputating hands and feet or throwing objects. Failure to observe the following safety instructions could result in serious injury or death.

SAFE OPERATION PRACTICES

5. Be sure the area is clear of other people before mowing. Stop machine if anyone enters the area.

6. Never carry passengers.

7. Disengage the blades before shifting into reverse and backing up. Always look down and behind before and while backing.

8. Be aware of the mower and attachment discharge direction and do not point it at anyone. Do not operate the mower without either the entire grass catcher or the chute guard in place.

9. Slow down before turning. Operate the machine smoothly. Avoid erratic operation and excessive speed.

10. Never leave a running machine unattended. Always turn off the blades, place the transmission in neutral, set the parking brake, stop the engine and remove key before dismounting.

11. Turn off blades when not mowing.

12. Stop the engine and wait until the blades come to a complete stop before (a) removing the grass catcher or unclogging chute, or (b) making any repairs, adjusting or removing any grass or debris.

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13. Mow only in daylight or good artificial light.

14. Do not operate the machine while under the influence of alcohol or drugs.

15. Watch for traffic when operating near or crossing roadways.

16. Use extra care when loading or unloading the machine into a trailer or truck. This unit should not be driven up or down a ramp onto a trailer or truck under power, because the unit could tip over causing serious personal injury. The unit must be pushed manually on a ramp to load or unload properly.

17. Never make a cutting height adjustment while the engine is running if the operator must dismount to do so.

18. Wear sturdy, rough-soled work shoes and closefitting slacks and shirts. Do not wear loose fitting clothes or jewelry. They can be caught in moving parts. Never operate a unit in bare feet, sandals or sneakers.

19. Check overhead clearance carefully before driving under power lines, wires, bridges or low hanging tree branches, before entering or leaving buildings, or in any other situation where the operator may be struck or pulled from the unit, which could result in serious injury.

20. Disengage all attachment clutches, set the parking brake in the on position, and put the lap bars to the neutral or out position before attempting to start the engine.

21. Your mower is designed to cut normal residential grass of a height no more than 10”. Do not attempt to mow through unusually tall, dry grass (e.g. pasture) or piles of dry leaves. Debris may build up on the mower deck or contact the engine exhaust presenting a potential fire hazard.

22. Use only accessories approved for this machine by Troy-Bilt. Read, understand and follow all instructions provided with the approved accessory.

II. SLOPE OPERATION

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

For your safety, use the slope gauge included as part of this manual to measure slopes before operating this unit on a sloped or hilly area. If the slope is greater than 15° as shown on the slope gauge, do not operate this unit on that area or serious injury could result.

DO:

Mow across slopes, not up and down.

Remove obstacles such as rocks, limbs, etc.

Watch for holes, ruts or bumps. Uneven terrain could overturn the machine. Tall grass can hide obstacles.

Use slow speed. Choose a low enough speed so that you will not have to stop while on the slope.

Follow the manufacturer’s recommendations for counterweights with attachments to improve stability.

Use extra care with grass catchers or other attachments. These can change the stability of the machine.

Keep all movement on the slopes slow and gradual. Do not make sudden changes in speed or direction. Rapid acceleration or deceleration could cause the front of the machine to lift and rapidly flip over backwards, which could cause serious injury.

Avoid starting or stopping on a slope. If the tires lose traction, disengage the blades and proceed slowly

straight down the slope.

DO NOT:

Do not turn on slopes unless necessary; if mowing

slopes, turn slowly and gradually uphill, if possible.

Do not mow near drop-offs, ditches or embankments. The mower could suddenly turn over if a wheel is over the edge of a cliff or ditch, or if an edge caves in.

Do not mow on wet grass. Reduced traction could cause sliding.

Do not try to stabilize the machine by putting your foot on the ground.

Do not use the grass catcher on steep slopes.

III. CHILDREN

Tragic accidents can occur if the operator is not alert to the presence of children. Children are often attracted to the machine and the mowing activity. Never assume that children will remain where you last saw them.

1. Keep children out of the mowing area and in watchful care of an adult other than the operator.

2. Be alert and turn the machine off if children enter the area.

3. Before and when backing up, look behind and down for small children.

4. Never carry children, even with the blades off. They may fall off and be seriously injured or may interfere with safe machine operation.

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5. Never allow children under 14 years old to operate the machine. Children 14 years and over should only operate the machine under close parental supervision and proper instruction.

6. Use extra care when approaching blind corners, shrubs, trees or other objects that may obscure your vision of a child or other hazard.

7. Remove the key when the machine is left unattended to prevent unauthorized operation.

IV. SERVICE

1. Use extreme care in handling gasoline and other fuels. They are extremely flammable and the vapors are explosive.

a. Use only an approved container. b. Never remove fuel cap or add fuel with the en-

gine running. Allow the engine to cool at least two minutes before refueling.

c. Replace the fuel cap securely and wipe off any

spilled fuel before starting the engine as it may cause a fire or explosion.

d. Extinguish all cigarettes, cigars, pipes and oth-

er sources of ignition.

e. Never refuel the machine indoors because fuel

vapors will accumulate in the area.

f. Never store the fuel container or machine

inside where there is an open flame or spark, such as a gas hot water heater, space heater or furnace.

2. Never run a machine inside a closed area.

3. To reduce fire hazard, keep the machine free of grass, leaves or other debris build-up. Clean up oil or fuel spillage. Allow the machine to cool at least 5 minutes before storing.

4. Before cleaning, repairing or inspecting, make certain the blade and all moving parts have stopped. Disconnect the spark plug wire, and keep the wire away from the spark plug to prevent accidental starting.

5. Check the blade and engine mounting bolts at frequent intervals for proper tightness. Also visually inspect blades for damage (e.g., excessive wear, bent, cracked). Replace with blades which meet original equipment specifications.

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

7. Never tamper with safety devices. Check their proper operation regularly. Use all guards as instructed in this manual.

8. After striking a foreign object, stop the engine, remove the wire from the spark plug and thoroughly inspect the mower for any damage. Repair the damage before restarting and operating the mower.

9. Grass catcher components are subject to wear, damage and deterioration, which could expose moving parts or allow objects to be thrown. For your safety protection, frequently check the components and replace with manufacturer’s recommended parts when necessary.

10. Mower blades are sharp and can cut. Wrap the blades or wear gloves, and use extra caution when servicing blades.

11. Check the park brake operation frequently. Adjust and service as required.

12. Muffler, engine and belt guards become hot during operation and can cause a burn. Allow to cool down before touching.

13. Do not change the engine governor settings or overspeed the engine. Excessive engine speeds are dangerous.

14. Observe proper disposal laws and regulations. Improper disposal of fluids and materials can harm the environment and the ecology.

a. Prior to disposal, contact your local

Environmental Protection Agency to determine the proper method for disposing of the waste. Recycling centers are established to properly dispose of materials in an environmentally safe fashion.

b. Use proper containers when draining fluids.

Do not use food or beverage containers that may mislead someone into drinking from them. Properly dispose of the containers immediately following the draining of fluids.

c. DO NOT pour oil or other fluids into the

ground, down a drain or into a stream, pond, lake, or other body of water. Observe Environmental Protection Agency regulations when disposing of oil, fuel, coolant, brake fluid, filters, batteries, tires and other harmful waste.

15. We do not recommend the use of a pressure washer or garden hose to clean your unit. They may cause damage to electrical components; spindles; pulleys; bearings; or the engine. The use of water will result in shortened life and reduce serviceability.

WARNING - YOUR RESPONSIBILITY: Restrict the use of this power machine to persons who

read, understand and follow the warnings and instructions in this manual and on the machine.

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SAFETY DECALS AND LABELS

Keep product safety graphics clean. Replace any safety graphic that is damaged, destroyed, missing, painted over or can no longer be read. Replacement safety graphics are available through your authorized Troy-Bilt dealer.

BATT.

OIL

HOURS 1/10

O /

PARK

BLADE

BRAKE

STARTING

INSTRUCTI ON

To START, PARK BRAKE must be se

•

P.T.O. s

witch in OFF

(dow

n) pos

•

Lap bars in NEUTRAL and outward pos

•

Thro

ttle set properly, CHOKE position if "cold"

•

Turn key to ON, then START, release when engine runs

•

ition

FOR FIRST-TIME

OPERAT ORS

Start Off In A Flat, Open Area.

•

Keep Bystanders Away

•

Set Throttle At A Low Speed.

•

Practice Maneuvering, (Forward, Reverse,

•

Left, Right) Without Deck Engaged

GENERAL SAFETY INSTRUCTIONS

– LOCATED ON LEFT CONSOLE

ASIDE OPERATOR’S SEAT

START

REVERSE

NEUTRAL

FORWARD

START

EUTRAL

REVERSE

GENERAL OPERATING INSTRUCTIONS

– LOCATED ON RIGHT CONSOLE

ASIDE OPERATOR’S SEAT

OTICE

PTO Automatically

•

Disengages When

Both Lap Bars Are

Moved Into Reverse.

PTO Automatically

•

Reengages When

Levers Are Returned

o The Neutral

Or For

ward Positions.

DECK HEIGHT

INDICATOR

TO REDUCE THE RISK OF INJU R Y, DO NOT OPERATE GRASS CATCHER IS IN ITS PROPER PLACE.

DAMAGED, REPLACE IMMEDIATEL Y.

PARK BRAKE

INDICATOR

UNLESS DISCHARGE COVER OR

• Read The Operator's Manual.

• Go Across Slopes, Not Up And Down.

•

If Machine Stops Going Uphill, Stop Blade And Back Down Slowly.

• Avoid Sudden Turns.

• Do Not Mow When Children Or Others Are Around.

• Never Carry Children Even With Blades Off.

• Look Down And Behind Before And While Backing.

•

Keep Safety Devices (Guards, Shields, Sw itches, Etc.) In Place And Working.

• Remove Objects That Could Be Thrown By The Blade.

•

Do Not Operate Unit Where It Could Slip Or Tip.

BRAKE

PAR

• Know Location And Function Of All Controls.

•

Be Sure Blades And Engine Are Stopped Before Placing Hands Or Feet Near Blades.

•

Before Leaving Operator Position, Disengage Blades, Place In Neutral, Engage Parking Brake, Shut Off And Remove Key.

•

When Using The Optional Grass Bagging Attachment, The Fr ont Counter Weight Included With Bagger Must Be Installed.

WARNING

AVOID SERIOUS INJURY OR DEATH

WARNING

• Do not add fuel while the engine is hot or running.

•

Stop engine, disconnect spark plug before adjusting or servicing.

• Before leaving operator's position:

•

DISENGAGE IMPLEMENT DRIVE.

•

Place speed controls in neutral and set parking brake.

•

Wait for all movement to stop.

• Do not allow operation by untrained personnel.

OFF

GENERAL SAFETY INSTRUCTIONS WARNING – LOCATED IN CENTER

OF SEAT BOX FRAME

RZT42

CHOKE

FAST

RZT50

FAST

HANDS AND FEET SAFETY GRAPHIC

MOWER DECK

SAFETY GRAPHIC

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SLOW

THROTTLE CONTROL

INDICATOR – LOCATED ON

LEFT CONSOLE

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SAFETY DECALS AND LABELS

RZT42

READ OPERATOR'S MANUAL. KEEP SAFETY DEVICES WORKING.

SAFETY GRAPHIC – LOCATED ON

LEFT SIDE OF MOWER DECK

RZT50

KEEP HANDS AND FEET AWAY FROM ROTATING PARTS REMOVE OBJECTS THAT CAN BE THROWN BY THE BLADE IN ANY DIRECTION. WEAR SAFETY GLASSES. DO NOT MOW WHEN CHILDREN OR OTHERS ARE AOUND. NEVER CARRY CHILDREN USE EXTRA CAUTION ON SLOPES. DO NOT MOW SLOPES GREATER THAN 15°. MOW UP AND DOWN, NOT ACROSS AVOID SUDDEN TURNS, USE LOW GEAR

INFORMATION GRAPHIC – BELT

ROUTING LOCATED ON

LEFT SIDE OF MOWER DECK

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RECORDING MODEL AND SERIAL NUMBER

This Operator’s Manual is an important part of your new lawn tractor. It will help you assemble, prepare and maintain the unit for best performance. Please read and understand what it says.

Before you start assembling your new equipment, please locate the model plate under the seat of the tractor and copy the information in the space provided below. A sample model plate is also given below. This information will be necessary to use the manufacturer’s web site and/or help from the Customer Support Department or an authorized service dealer

Copy the model number here:

Copy the serial number here:

www.troybilt.com

TROY-BILT LLC P. O. BOX CLEVELAND, OH 44136 330-558-7220

866-840-6483

361131

CUSTOMER SUPPORT

Please do NOT return the unit to the retailer from where it was purchased, without first contacting Customer Support.

If you have difficulty assembling this product or have any questions regarding the controls, operation or maintenance of this unit, you can seek help from the experts. Choose from the options below:

1. Visit troybilt.com. Click on Customer Service at the bottom of the page.

2. To reach the Customer Support Line, please call 1-866-840-6483 or 1-330-558-7220.

3. The engine manufacturer is responsible for all engine-related issues with regards to performance, powerrating, specifications, warranty and service. Please refer to the engine manufacturer’s Owner’s/Operator’s Manual for more information.

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(Keep this sheet in a safe place for future reference.)

A CORNER OF A BUILDING

A POWER POLE

SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE

SLOPE GAUGE

OR A FENCE POST

15°

WARNING

USE THIS PAGE AS A GUIDE TO DETERMINE SLOPES WHERE YOU MAY NOT OPERATE SAFELY.

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Do not mow on inclines with a slope in excess of 15 degrees (a rise of approximately 2-1/2 feet every 10 feet).

A riding mower could overturn and cause serious injury. If operating a walk-behind mower on such a slope, it is

extremely difficult to maintain your footing and you could slip, resulting in serious injury.

Operate RZT zero turn tractors across the face of slopes rather than up and down. Begin with the first pass

across the bottom of the slope and turn uphill at the end of each pass whenever possible.

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SECTION 1: CONTROLS AND FEATURES

A. B.

Deck Lift Handle

RH and LH Drive Control Levers

Ignition Switch

PTO Switch

Transmission Bypass Rod (Not Shown)

G. Cup Holder

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Figure 4

H.Deck Height Index

O. Parking Brake Engagement Lever

Storage Tray Seat Adjustment Lever (Not Seen) Fuel Tank Cap Hour Meter /Indicator Panel Throttle Control Choke Control—Model RZT50 ONLY

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NOTE: References to LEFT, RIGHT, FRONT, and

REAR indicate that position on the tractor when facing forward while seated in the operator’s seat.

A. Deck Height Index

The deck height index consists of six index notches located on the front/right of the seat box frame. Each notch corresponds to a 1/2 inch change in the deck height position ranging from 1-1/2 inches at the lowest notch to 4 inches at the highest notch.

B. Deck Lift Handle

The deck lift handle is located on the front/right of the seat box frame, and is used to raise and lower the mower deck.

Pull the handle to the left out of the index notch and push downward to lower the deck, or pull upward to raise the deck. When the desired height is attained, move the lift handle to the right until fully in the index notch.

C. RH and LH Drive Control Levers

The RH and LH control levers are located to each side of the operator’s seat. These hinged levers open out to the side in the neutral position to permit the operator to be seated or to leave the tractor seat. The levers must be fully opened out in the neutral position to start the tractor engine.

Each lever controls the respective RH or LH transmission. Consequently, these levers control all of the movements of the tractor. Driving and steering utilizing these control levers is quite different from conventional tractors, and will take some practice to master. Refer to SECTION 2: OPERATION for instructions on using the control levers.

D. Ignition Switch

The ignition switch is located on the RH console to the right of the operator’s seat.

The ignition switch has three positions as follow:

OFF

STOP

NOTE: To prevent accidental starting and/or battery

discharge, remove the key from the ignition switch when the tractor is not in use.

E. Power Take-Off (PTO) Switch

The PTO switch is located on the RH console to the right of the operator’s seat.

Figure 6

The PTO switch operates the electric PTO clutch mounted on the bottom of the engine crankshaft. Pull the switch knob upward to engage the PTO clutch, or push the knob downward to disengage the clutch.

The PTO switch must be in the "disengaged" position when starting the engine.

F. Transmission Bypass Rods (Not Shown)

The transmission bypass rods (one for each the RH and LH transmission) are located beneath the frame platform, just inside each rear wheel.

When engaged, the two rods open a bypass within the hydrostatic transmissions, which allows the tractor to be pushed short distances by hand. Refer to SECTION 4: MAINTENANCE for instructions on using the bypass feature.

WARNING: Never tow your tractor. Towing the tractor with the rear wheels on the ground may cause severe damage to the transmissions.

G. Cup Holder

The cup holder is located toward the rear of the RH console to the right of the operator’s seat.

START

Figure 5

OFF - The engine and electrical system is turned off. ON - The tractor electrical system is energized. START- The starter motor will turn over the engine.

Release the key immediately when the engine starts

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H. Storage Tray

The storage tray is located at the rear of the RH console.

J. Seat Adjustment Lever (Not Seen)

The seat adjustment lever is located below the front/ left of the seat. The lever allows for adjustment of the fore to aft position of the operator’s seat. Refer to SECTION 3: ADJUSTMENTS for instructions on adjusting the seat position.

For Parts Call 606-678-9623 or 606-561-4983

K. Fuel Tank Cap

The fuel tank cap is located at the rear of the LH console. Turn the cap counterclockwise to unscrew and remove from the fuel tank. Always re-install the fuel cap tightly onto the fuel tank after removing.

WARNING: Never fill the fuel tank when the engine is running. If the engine is hot from recently running, allow to cool for several minutes before refueling. Highly flammable gasoline could splash onto the engine and cause a fire.

L. Hour Meter/Indicator Panel

The hour meter/indicator panel is located on the LH console to the left of the operator’s seat.

Battery

Indicator

PTO

Engaged

Indicator

Figure 7

Hour Meter Features

The hour meter records the hours that the tractor has been operated in the digital display (tenths of an hour-right most digit).

NOTE: The hour meter is activated whenever the igni- tion switch is turned to the "ON" position. Keep a record of the actual hours of operation to assure all maintenance procedures are completed according to the instructions in this manual and the engine manual.

• When key is turned to the "ON" position, the battery indicator light briefly illuminates and the battery voltage is briefly displayed. The display then changes to the accumulated hours.

• Every 50 hours a "change oil" message will flash on the display for 2 minutes every time the tractor is started. This message will repeat for the first two hours after each 50 hour interval. The oil pressure indicator light will also flash when this display is active. Follow the oil change intervals

provided in the engine manual.

Oil Pressure Indicator RZT50 only

Hour Meter

Parking Brake Engaged

Indicator

Indicator Panel Feature

Battery Indicator (Refer to Figure 7)

• Illuminates and the battery voltage is displayed briefly when the ignition switch it turned to the "ON" position.

• Illuminates to indicate the battery voltage has dropped below 11.5 (+0.5/-1.0) volts. The battery voltage is also displayed on the hour meter. If this indicator and display come on during operation, check the battery and charging system for possible causes and/or contact your authorized TroyBilt Service Dealer.

Oil Pressure Indicator - RZT50 ONLY (See Figure 7)

• This warning lamp indicates low engine oil pressure. If the indicator comes on while the engine is running, stop the engine immediately and check for possible causes. Do not run the engine while this indicator is illuminated. Contact your authorized Troy-Bilt Service Dealer to have the tractor and engine inspected.

NOTE: The oil pressure indicator may illuminate when the ignition switch is in the ON position, but should turn off when the engine is started.

PTO Engaged Indicator (Refer to Figure 7)

• This indicator illuminates when the PTO switch is pulled upward in the "ENGAGED" position and the ignition switch is turned to the "START" position. Check this indicator if the engine will not crank with the ignition switch in the "START" position. If necessary, move the PTO switch to the "DISENGAGED" position.

Parking Brake Engaged Indicator (Refer to Figure 7)

• This indicator illuminates when the parking brake is in the DISENGAGED position and the ignition switch is turned to the "START" position. Check this indicator if the engine will not crank with the ignition switch in the "START" position. If necessary, move the parking brake to the ENGAGED position. This indicator also illuminates when the ignition switch is turned to the "START" position and the RH and/or LH drive control levers are in a position other than the fully out in neutral position. Move the control levers fully outward.

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M. Throttle Control

The throttle control is located on the LH console to the left of the operator’s seat. When set in a given position, a uniform engine speed will be maintained.

RZT42

CHOKE

RZT50

• Push the throttle control handle forward to increase the engine speed. The tractor is designed to operate with the control handle in the fast position (full throttle) when the tractor is driven and the mower deck is engaged.

• Pull the throttle control handle rearward to decrease the engine speed.

This symbol indicates the fast position.

This symbol indicates the slow position.

This symbol indicates the choke position.

This symbol indicates the fast position.

This symbol indicates the slow position.

Figure 8

• Model RZT42 ONLY — When starting the engine, push the control handle fully forward into the "CHOKE" position. See Figure 8. After starting and warming the engine, move the control handle rearward until you feel it move past the choke detent.

N. Choke Control - Model RZT50 ONLY

The choke knob controls the position of the engine choke. Pull the knob out to choke the engine; push the knob in to open the choke.

O. Parking Brake Engagement Lever

The parking brake engagement lever is located on the front/left of the seat box frame, and is used to engage the parking brake.

• Pull the lever fully upward and to the left and lower into the "J" slot to engage the parking brake.

• Pull the lever up out of the "J" slot and to the right; then lower completely to disengage the parking brake.

IMPORTANT: If the LH and RH drive control levers are not fully opened out in the neutral position when engaging the parking brake, the engine will stop. The parking brake must be placed in the engaged position when starting the tractor engine.

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SECTION 2: OPERATION

GENERAL SAFETY

• RECEIVE INSTRUCTION - Read the operator’s manual. Learn to operate this machine SAFELY. Don’t risk INJURY or DEATH. Allow only those who have become competent in its usage to operate this tractor .

• Familiarize yourself with the operations of all the instruments and controls.

• Before starting the engine or beginning operation, be familiar with the controls. The operator should be in the operator’s seat. The PTO switch must be in the disengaged position, the parking brake engaged, and the RH and LH drive control levers moved fully outward in the neutral position.

• Keep all shields in place. Keep away from moving parts.

• NO RIDERS! Keep all people and pets a safe distance away. Look behind and down to both sides of the tractor before and while backing up.

• DO NOT direct the mower discharge at people.

• Avoid slopes where possible. Never operate on slopes greater than 15°. Slopes with a greater incline present dangerous operating conditions. Tractors can be rolled over.

• Before leaving the operator’s seat: Shut off the PTO, move the RH and LH drive control levers fully outward in the neutral position, engage the parking brake, shut off the engine and remove the ignition key. Wait for all movement to stop before servicing or cleaning.

• Operate the drive control levers smoothly and avoid any sudden movements of the levers when starting and stopping. Keep a firm grip on the control levers; do not allow the levers to return to neutral on their own.

• Be careful when operating near roadways. Stop the tractor motion and wait for vehicles to pass before operating along the road.

• Do not operate the tractor with the mower deck removed. Removal of the deck will change the balance of the tractor, and could contribute to a tractor rollover.

• Avoid operation on traction surfaces that are unstable; use extreme caution if the surface is slippery.

• Slow down before turning and come to a complete stop before any zero turn maneuver.

• Do not stop the tractor or park the tractor over combustible materials such as dry grass, leaves, debris, etc.

• Do not fill the fuel tank when the engine is running or while the engine is hot. Allow the engine several minutes to cool before refueling. Tighten the fuel cap securely.

BEFORE OPERATING YOUR TRACTOR

• Before you operate the tractor, study this manual and the engine manual carefully. They have been prepared to help you operate and maintain your tractor efficiently.

• Familiarize yourself with the operations of all the instruments and controls.

• This engine is certified to operate on unleaded gasoline. For best results, fill the fuel tank with only clean, fresh, unleaded gasoline with a pump sticker octane rating of 85 or higher. Unleaded gasoline is recommended because it leaves less combustion chamber deposits. Some fuels are gasoline blended with alcohols or ethers. Excessive amounts of the these blends can damage the fuel system or cause engine performance problems. If undesirable operating symptoms occur, use gasoline with a lower percentage of alcohol or ether. Do not use gasoline that contains Methanol.

• Check the engine oil level. See Engine Manual. IMPORTANT: Your tractor is shipped with motor

oil in the engine. However, you MUST check the oil level before operating. The capacity of the engine is approximately 48 oz. (1.4 liters) for the model RZT42 and 64 oz. (1.9 liters). for the model RZT50 (with oil filter). Do not to overfill.

• Clean the air cleaner element if necessary. See Engine Manual.

• Check the tire inflation pressures.

• Adjust the seat for operator’s maximum comfort, visibility, and for maintaining complete control of the tractor.

SAFETY INTERLOCK SYSTEM

This tractor is equipped with a safety interlock system for the protection of the operator. If the interlock system should ever malfunction, do not operate the tractor. Contact your authorized Troy-Bilt Service Dealer.

• The safety interlock system prevents the engine from cranking or starting unless the RH and LH drive control levers are moved fully outward in the neutral position, the parking brake is engaged, and the PTO is disengaged.

• To avoid sudden movement when disengaging the parking brake, the safety interlock system will shut off the engine if the RH and/or LH drive control levers are moved to a position other than the fully out in neutral position when the parking brake is engaged

• The safety interlock system will shut off the engine if the operator leaves the seat before engaging the parking brake.

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• The safety interlock system will shut off the engine if the operator leaves the seat with the PTO engaged, regardless of whether the parking brake is engaged.

NOTE: The PTO switch must be moved to the “OFF” position to restart the engine.

• The safety interlock system will shut off the PTO and the mower blades will stop if both drive control levers are moved into the reverse position. The PTO will re-engage when one or both of the levers are moved back to the neutral or forward position.

STARTING THE ENGINE

WARNING: For personal safety, the operator must be sitting in the tractor seat when starting the engine.

WARNING: This unit is equipped with a safety interlock system designed for the protection of the operator. Do not operate the tractor if any part of the interlock system is malfunctioning. Periodically check the functions of the interlock system for proper operation.

• Move the RH and LH drive control levers fully outward in the neutral position. Refer to Figure 9.

• Operator must be sitting in the tractor seat.

• Engage the parking brake. Refer to Figure 9.

• Make certain the PTO switch is in the disengaged (down) position. Refer to Figure 9.

• Model RZT42 ONLY

1. Move the throttle control lever fully forward

into the "CHOKE" position. NOTE: If the

engine is warmed up, it may not be necessary to place the throttle control in the choke position.

2. Turn the ignition key clockwise to the “START”

position and release it as soon as the engine starts; however, do not crank the engine continuously for more than 5 seconds at a time. If the engine does not start within this time, turn the key to “OFF” and wait a minute to allow the engine’s starter motor to cool. Try again after waiting. If after a few attempts the engine fails to start, do not keep trying to start it with the choke closed as this will cause flooding and make starting more difficult.

3. As the engine warms up, gradually pull the

throttle control lever rearward past the choke detent position. Do not use the choke to enrich the fuel mixture, except as necessary to start the engine.

• Model ZT50 ONLY

1. Pull the choke control knob upward to the full choke position. NOTE: If the engine is warmed

up, it may not be necessary to choke the engine.

2. Move the throttle control lever fully forward to the "fast" position.

LH Control Lever

Out in Neutral

RZT42 - Move Throttle

Control to Choke

RZT50 - Move Throttle

Control to "FAST"

3. Turn the ignition key clockwise to the “START” position and release it as soon as the engine starts; however, do not crank the engine continuously for more than 5 seconds at a time. If the engine does not start within this time, turn the key to “OFF” and wait a minute to allow the engine’s starter motor to cool. Try again after waiting. If after a few attempts the engine fails to start, do not keep trying to start it with the choke closed as this will cause flooding and make starting more difficult.

4. As the engine warms up, gradually push the choke knob downward to open the choke. Do not use the choke to enrich the fuel mixture, except as necessary to start the engine.

• Allow the engine to warm up before putting the engine under load.

• Observe the hour meter/indicator panel. If the battery indicator light or oil pressure light (RZT50 only) come on, immediately stop the engine. Have the tractor inspected by your authorized Troy-Bilt Service Dealer dealer.

Parking Brake Engaged

RZT50 - Pull Choke

Figure 9

RH Control Lever

Out in Neutral

PTO Switch in Down

(Disengaged) Position

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MTD 17aa5abp766-02-06 Parts Manuals

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