Operator’s Manual Riding Mower Internal Bagging System Model 13B-325-401 IMPORTANT: Read safety rules and instructions carefully before operating equipment. Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forestcovered, 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 368022 Cleveland, Ohio 44136-9722. MTD PRODUCTS INC. P.O. BOX 368022 CLEVELAND, OHIO 44136-9722 ECO No. 2420 PRINTED IN U.S.A. FORM NO. 770-10077C.fm (1/2001) TABLE OF CONTENTS Content Page Important Safe Operation Practices................................................................... 3 Slope Gauge...................................................................................................... 6 Assembling Your Riding Mower ......................................................................... 7 Know Your Riding Mower................................................................................... 9 Operating Your Riding Mower............................................................................ 11 Making Adjustments .......................................................................................... 13 Servicing Your Rider Mower .............................................................................. 16 Maintaining Your Riding Mower ......................................................................... 17 Off-Season Storage ........................................................................................... 19 Troubleshooting ................................................................................................. 20 Parts List............................................................................................................ 22 FINDING MODEL NUMBER This Operator’s Manual is an important part of your new riding mower. 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 on the equipment and copy the information from it in the space provided below. The information on the model plate is very important if you need help from our Customer Support Department or an authorized dealer. • You can locate the model plate by pivoting the cover upward and looking under the frame. A sample model plate is explained below. For future reference, please copy the model number and the serial number of the equipment in the space below. (Model Number) (Serial Number) Copy the model number here: Copy the serial number here: MTD PRODUCTS INC CLEVELAND, OHIO 44136 CALLING CUSTOMER SUPPORT If you have difficulty assembling this product or have any questions regarding the controls, operation or maintenance of this unit, please call the Customer Dealer Referral Line. Call 1- (330) 220-4MTD (4683) or 1- (800)-800-7310 to reach a Customer Support representative. Please have your unit’s model number and serial number ready when you call. See previous section to locate this information. You will be asked to enter the serial number in order to process your call . 2 SECTION 1: IMPORTANT SAFE OPERATION PRACTICES 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 rider mower. Failure to comply with these instructions may result in personal injury. When you see this symbol—heed its warning. Your rider 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 part of the operator can result in serious injury. If you violate any of these rules, you may cause serious injury to yourself or others. WARNING: Engine exhaust, some of its constituents, and certain vehicle components contain or emit chemicals known to State of California to cause cancer and birth defects or other reproductive harm. General Operation • • • • • • • • • • • 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 and for ordering replacement parts. Only allow responsible individuals familiar with the instructions to operate the machine. Know controls and how to stop the machine quickly. Do not put hands or feet under cutting deck or near rotating parts. Clear the area of objects such as rocks, toys, wire, etc., which could be picked up and thrown by the blade. 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, bystanders and helpers at least 75 feet from the mower while it is in operation. Always wear safety glasses or safety goggles during operation or while performing an adjustment or repair, to protect eyes from foreign objects. Stop the blade(s) when crossing gravel drives, walks or roads. Be sure the area is clear of other people before mowing. Stop machine if anyone enters the area. Never carry passengers. Disengage blade(s) before shifting into reverse and backing up. Always look down and behind before and while backing. 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. Slow down before turning. Operate the machine smoothly. Avoid erratic operation and excessive speed. Never leave a running machine unattended. Always turn off blade(s), place transmission in neutral, set park brake, stop engine and remove key before dismounting. Turn off blade(s) when not mowing. • • • • • • • • Stop engine and wait until blade(s) comes to a complete stop before (a) removing grass catcher or unclogging chute, or (b) making any repairs, adjusting or removing any grass or debris. Mow only in daylight or good artificial light. Do not operate the machine while under the influence of alcohol or drugs.Watch for traffic when operating near or crossing roadways. 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. Never make cutting height adjustment while engine is running, if operator must dismount to do so. 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. 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. Disengage all attachment clutches, thoroughly depress the brake pedal, and shift into neutral before attempting to start engine. 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. Slope Operation • 3 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 in that area or serious injury could result. • • • • Do: • • • • • • • • Mow up and down slopes, not across. 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 gear so that you will not have to stop or shift while on the slope. Always keep machine in gear when going down slopes to take advantage of engine braking action. Follow the manufacturer’s recommendations for wheel weights or counterweights 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 engagement or braking 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 tires lose traction, disengage the blade(s) and proceed slowly straight down the slope. • Service • • • Do Not: • • • • • Do not turn on slopes unless necessary; then, turn slowly and gradually downhill, 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 grass catcher on steep slopes. • • Children • • • Before and when backing, look behind and down for small children. Never carry children. They may fall off and be seriously injured or interfere with the safe machine operation. Never allow children under 14 years old to operate the machine. Children 14 years and over should only operate machine under close parental supervision and proper instruction. Use extra care when approaching blind corners, shrubs, trees or other objects that may obscure your vision of a child or other hazard. Remove key when machine is unattended to prevent unauthorized operation. • 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. Keep children out of the mowing area and in watchful care of an adult other than the operator. Be alert and turn machine off if children enter the area. • • 4 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 engine running. Allow engine to cool at least two minutes before refueling. c. Replace 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 other 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. Never run a machine inside a closed area. To reduce fire hazard, keep the machine free of grass, leaves or other debris build-up. Clean up oil or fuel spillage. Allow machine to cool at least 5 minutes before storing. 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. Check the blade and engine mounting bolts at frequent intervals for proper tightness. Also, visually inspect blade for damage (e.g., excessive wear, bent, cracked). Replace with blade which meets original equipment specifications. Keep all nuts, bolts and screws tight to be sure the equipment is in safe working condition. Never tamper with safety devices. Check their proper operation regularly. Use all guards as instructed in this manual. 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. • • • • • • 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 components and replace with manufacturer’s recommended parts when necessary. Mower blades are sharp and can cut. Wrap the blade(s) or wear gloves and use extra caution when servicing blade(s). Check brake operation frequently. Adjust and service as required. Muffler, engine and belt guards become hot during operation and can cause a burn. Allow to cool down before touching. Do not change the engine governor settings or overspeed the engine. Excessive engine speeds are dangerous. • Observe proper disposal laws and regulations. Improper disposal of fluids and materials can harm the environment and the ecology. a. Prior to disposal, determine the proper method to dispose of waste from your local office of Environmental Protection Agency. 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. Illustrated below are the representation of the safety labels on the equipment. For a full list of part numbers and location of all the labels, see page 38. 5 SECTION 2: SLOPE GUAGE USE THIS PAGE AS A GUIDE TO DETERMINE SLOPES WHERE YOU MAY NOT OPERATE RIDER MOWER SAFELY: FO LD O N D OTT ED 15° SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE A POWER POLE A 15 ° SL OPE OR A FENCE POST A CORNER OF A BUILDING L I N E , REP R E S ENT ING WARNING 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 RIDING mowers up and down slopes, never across the face of slopes. Operate WALK-BEHIND mowers across the face of slopes, never up and down slopes. 6 SECTION 3: UNPACKING & ASSEMBLING YOUR RIDER MOWER • • • • • Remove all screws and staples from crate. Holding the sides of the crate firmly, lift the top of the crate up and keep it aside. Avoid tire punctures. Remove and discard plastic bag covering the unit. Lift the rear of the mower and clear the bottom of the crate. Repeat for the front. Be sure parking brake is disengaged. See Figure 8 for location of parking brake. Roll unit out of the crate’s way. • • • • Loose Parts • 1. 2. 3. 4. 5. • Remove loose parts from the grass catcher and/or the crate very carefully. Compare with list and illustration (Figure 1) below. Mulching plug & side-discharge chute Oil drain sleeve Bumper (optional) Ignition keys (not shown) Operator’s manual (not shown) WARNING: Press the battery cables against side of battery so that these do not make contact with flange of rider frame when it is opened or closed. • Side-Discharge Chute • Oil Drain Sleeve Mulching Plug Remove both wing nuts securing the battery and cover to the battery hold-down rods. See Figure 3 . Remove red and black insulation caps from battery terminals. See Figure 3 Remove battery terminal screws with a Phillips screw driver or a 10 mm. socket wrench. Attach the red battery cable to the positive terminal (marked +), and the black battery cable to the negative terminal (marked -) on the battery. See Figure 3 . Align the cables with the slots in the battery cover and tighten the screws on the battery terminals. Reassemble the battery cover to the hold-down rods on two ends with the two wing nuts removed earlier. Check to ensure that the cables pass easily through slots in cover. Place right hand on the left side of the seat and slowly lower the hood assembly untill fully closed. CAUTION: Do not place your hand around the bottom edge of the hood assembly; it may get pinched between the hood assembly and grass catcher or the frame rail. Bumper Figure 1 Battery Cover Attaching Battery Cables Wing Wing Nut Nut Negative Positive Terminal Terminal The battery is located under the hood assembly above the left rear wheel. Refer to Figure 3 . • To access the battery, lift the hood assembly from the left side of the hood only. Stand on the right side of the unit and pivot the hood assembly towards you until fully opened. See Figure 2 . CAUTION: Do not lift the hood assembly by the two vent openings located behind the seat. Battery Cable Rider Frame Vent Opening Figure 3 WARNING: Battery posts, terminals and related accessories contain lead and lead compounds. Wash hands after handling. Attaching Side-Discharge Chute Your riding mower is shipped to you with the grass catcher fully assembled on the unit. A side-discharge chute and a mulching plug are included as loose parts. Follow the instructions below to attach the sidedischarge chute. Hood Assembly Figure 2 7 WARNING: Do not operate the mower if any one or more of the grass catcher, discharge chute or mulching plug is not firmly installed on the mower. • • • • • • • Pivot the hood assembly up and lower the cutting height adjustment lever to the lowest position. Remove the two wing nuts (A and B in Figure 4 ) from two ends of the grasscatcher chute. Loosen the wing nut (C in Figure 4 ) in the middle of the chute. Do not remove. Slide the grasscatcher chute to the right and out of the deck frame. Slide the side-discharge chute in and place it on the deck so that the three wing nut positions align with those on the deck. Reinsert wing nuts A and B. Tighten all three. • To attach the mulching plug now to the unit, follow instructions on previous page to attach sidedischarge chute to the deck. Place wing nut on each of the hex bolts and thread a few turns. See Figure 5 . Check that the mulch plug is aligned correctly within the discharge chute. Tighten both wing nuts Attaching Bumper (If equipped) • • • Grass Catcher Chute • Remove bumper from the grass catcher inside which it was shipped. Loosen and remove the two hex bolts and lock nuts from the front rail on the rider mower. See Figure 6 . Align the two holes on the bumper tube with the corresponding holes on the rider frame (from where you removed the hardware). See Figure 6. Re-insert the two hex bolts through the bumper and the rider frame and secure with the two lock nuts. Lock Nut SideDischarge Wing Chute Nut B Bumper Rider Frame Rail Wing Nut C Hex Bolt Figure 6 Wing Nut A Attaching Hitch Plate (If equipped) Figure 4 The hitch plate, if so equipped, was loosely attached to the rear frame of the rider for shipping purposes. Attaching Mulch Plug • While operating your rider mower, you have three options: (i) to collect grass clippings in the grass catcher, (ii) to discharge grass clippings on the side, or (iii) to mulch grass and recirculate clippings back to the lawn. For the third option, attach the mulching plug to the side-discharge chute and then to the deck. • • • • Put two hex bolts through the mulching plug at the respective openings. See Figure 5 . Place speed nuts over the hex bolts. • Side Discharge Chute Wing Nut Hitch Plate B Speed Nut Loosen the nut attaching the hitch plate to the frame and swing the plate outward. Make sure that the wider side of the hitch plate aligns with the rear frame as shown in Figure 7 . Remove the hex bolt, lock washer and hex nut from the other end of the rear frame. Save the hardware. Align the hole on the hitch plate with the corresponding hole on the rear frame assembly (from where you removed the hardware). Re-insert the hex bolt through the hitch plate and the rear frame. Secure with lock washer and hex nut removed earlier. See Figure 7 . Tighten both sets of hardware. Hex Bolt A Rear Frame Mulching Plug Hex Bolt Lock Washer Figure 5 • Hex Nut Insert the plug into the side-discharge chute aligning the two slots on two sides of the sidedischarge chute with those on the mulching plug. Figure 7 8 SECTION 4: KNOW YOUR RIDER MOWER Compare the illustrations in Figure 8 with your rider mower to familiarize yourself with the location of various controls and adjustments. The operation of any rider mower can result in foreign objects being thrown into the operator’s eyes, causing severe eye damage. Always wear safety glasses before operating the mower, or while performing any adjustments or repairs on it. Seat Steering Wheel Throttle/Choke Control Shift Lever Grass Fill Level Indicator Cutting Height Adjustment Lever Blade Engagement Pedal Ignition Switch Side Discharge Chute “Go” Pedal Cutting Deck Brake Pedal Hood Assembly Parking Brake Grass Catcher Engine Blade Engagement Pedal Blade Lock Battery Figure 8 Throttle/Choke Control Grass Fill Level Indicator Use to regulate the engine speed and to start the engine. Use to determine the level of grass clipping in the bag and when to stop and empty it. “Go” Pedal Parking Brake Use to regulate the ground speed of the rider mower. Use to stop the mower from moving while parked. Ignition Switch Blade Engagement Pedal Use to turn the engine ON or OFF. Use to engage or disengage the blade. Shift Lever Blade Lock Use to change direction of the mower. Use to lock blade at the engaged position. 9 Cutting Height Adjustment Lever Use to raise and lower the cutting deck which determines the cutting height. Brake Pedal Use to stop the mower’s forward or reverse motion. Stopping Mower • • • • • Release blade engagement pedal all the way. Release the "Go" Pedal and depress the brake pedal. When the mower comes to a complete stop, place the shift lever in neutral. Engage the parking brake by pulling up on the parking brake knob. Turn the ignition key to OFF position and remove the key. CHOKE Cutting Height Shift Lever Safety Interlock This unit is equipped with a safety interlock system for your protection. The interlock safety switches are connected to the brake pedal, the blade engagement pedal, the shift lever, and the seat. Figure 9 • The purpose of the safety interlock system is threefold: a. to prevent the engine from starting unless the brake pedal is depressed and the blade engagement pedal is disengaged; b. to shut off the engine if the blade pedal is not disengaged when the shift lever is put into reverse; and c. to shut the engine off when the operator leaves the seat without engaging the parking brake. • • WARNING: To avoid the risk of serious injury, do not operate the rider mower if the interlock system is malfunctioning. • • • • Move the lever outwards (left) to remove the locking pin from the lever and slide the lever to the position desired. Look at the rear and make sure the path is free of obstacles before positioning the shift lever to the reverse. Do not force the shift lever. If it does not shift, release the brake pedal slightly to line up the shifting collar in the transmission, then try to move the shift lever. Slowly release the brake pedal and take your foot off the pedal. Always make sure that there is no one in the way when you run the mower. Grass Fill Level Indicator This indicator (Figure 10 ) was designed to add convenience to your riding mower. While the mower is running, air will flow through the discharge chute and into the grass catcher. If the grass catcher is empty, air flows through easily pushing the ball up. If the grass catcher is full, air does not flow through it allowing the ball to fall. So if you see the ball in the grass catcher fill level indicator falling down, you should stop the mower and empty the bag. Remove objects that could be thrown by the blade(s). Know location and function of all controls. Be sure blade(s) and engine are stopped before placing hands or feet near blade(s). Before leaving operator's position, disengage blade(s), place the shift lever in neutral, engage parking brake, shut engine off and remove key. Using Shift Lever The shift lever is used to regulate the direction of your rider mower. It can be set at forward, neutral, or reverse settings. These settings, marked as F, N,and R respectively, are located next to the shift lever on the unit. See Figure 9. • Grass Fill Level indicator Before you move the shift lever to any of the positions, depress the brake pedal and stop the unit. Keep your foot on the brake pedal. Figure 10 10 SECTION 5: OPERATING YOUR RIDER MOWER Using Throttle/Choke Control • The throttle/choke control is used to increase or decrease the speed of the engine.The FAST and the SLOW positions are marked with illustrations of a rabbit and a turtle respectively. See Figure 9. • • Starting Mower • • • For normal operation and when using a grass catcher, move the throttle/choke control to the FAST position. For maximum charging of the battery and also for a cooler engine while running, move the throttle/ choke control to the FAST position. For transport and to tow pull-behind attachments, move the throttle/choke control to the SLOW position. Do not adjust the governor to increase or decrease the engine speed. The governor is set at the factory for maximum engine performance, and should not be altered. • • • • • • Using Parking Brake • • • Completely push the brake pedal down and stop the unit. With your right foot on the brake pedal, move the shift lever to the neutral position. Continuing to hold down the brake pedal with your right foot, pull up the parking brake knob. Make sure the parking brake holds the unit. Release the brake pedal. Stop the engine and remove the ignition key. Now your rider mower is parked. • Depress the brake pedal. The parking brake will be automatically disengaged. Stopping Mower Before Starting • • Service the engine with gasoline as described in the engine manual. Check the oil level. • WARNING: Never fill fuel tank indoors, or when engine is running or hot. Do not smoke while filling up the gasoline tank. • • • Release blade engagement pedal all the way. Release the "Go" Pedal and depress the brake pedal. When the mower comes to a complete stop, place the shift lever in neutral. Engage the parking brake by pulling up on the parking brake knob. Turn ignition key to OFF position and remove key. NOTE: Do not leave the key in the ON position when you are not operating the mower. Such action will drain the battery dead. Starting Engine • • • To engage the blade lock: While pressing down on the blade pedal, push the blade lock down with your heel. It should click into the “blade engaged” position. To disengage the blade lock, simply push down on the blade pedal and release the lock. WARNING: When the blades are engaged, keep hands and feet away from the discharge opening, the blades or any part of the deck. To release the parking brake • Depress the brake pedal so that the parking brake is disengaged. Place the shift lever in either the FORWARD or the REVERSE position as you desire. Look to the rear and check before backing up. Release the brake pedal. Depress the "Go" Pedal. To stop, release the "Go" Pedal and depress the brake pedal. Press the blade engagement pedal downward until the blades are turning.The blades can be engaged either while the mower is in motion or while it is standing. NOTE: Your rider mower is equipped with a blade lock to keep the blade engaged without the operator having to depress the blade pedal continuously. See Figure 8. To engage parking brake • Turn the ignition key to the START position. As soon as the engine starts, let the key return to the ON position. Move throttle/choke control out of CHOKE position and into FAST throttle position. Attach the wire to the spark plug. Depress the brake pedal with your right foot. Set throttle/choke control in the CHOKE position (all the way forward). Place the shift lever in the NEUTRAL position. To Empty Grass Catcher • 11 Stop the mower completely, pull up on the parking brake knob and take the ignition key out. Get off the operator’s seat. • • • • Pivot the hood assembly up. Pull up the grasscatcher bag by the handle and take it to the proper disposal site. See Figure 11 . Hold the bag away from your body. Push down on the bag lever and let the bottom section of the bag fall downwards. The grass clippings will be disposed of from the bottom. See Figure 11 . Tap the bag on the ground so that the three legs of the bag press against the ground. The bag lever should snap close while you push the bag downwards. Replace the bag on to the mower making sure the bag is placed on the flange on top of the discharge chute. Pivot the hood assembly down. • • • • When mowing an area for the first time, watch out for objects lying on the grass. If you strike a foreign object, stop the engine. Remove wire from spark plug and thoroughly inspect the mower for any damage. Repair the damage before operating it again. Avoid scalping the lawn by adjusting the cutting height upwards and/or sharpening the blades. Mow at full throttle. Learn the terrain on which you are mowing. For best mowing results, mow only when the grass is dry. The recommended mowing pattern is given below: Bag Handle Grass Catcher Bag • Push here • Hood Assembly • Figure 11 • Using The Mower Observe safety rules listed on pages 3-5 of this manual for safe operation of your mower. • • • Before mowing, make sure that the cutting deck is leveled. For deck adjustment, refer to page 14. You can engage the blade by pressing on the blade engagement pedal with your left foot while sitting on the operator’s seat. • 12 Mow grass often and in regular intervals so that you can cut only 1/3 of the grass blade in one mowing. To empty grass bag, stop the mower completely, engage the parking brake, and turn the ignition off. This will prevent the hot engine exhaust gas from browning the grass. Many communities no longer haul grass clippings to landfills. Composting the clippings from your grass catcher is a viable solution. For this you will have to empty the grass catcher at the designated composting site. Your rider mower is equipped with a mulching plug to mulch the grass and recycle into the lawn instead of collecting in the grasscatcher bag. Mulch only when the grass is dry. Mulching wet grass may damage the underside of the deck because wet grass tends to stick to it. Clean deck thoroughly if you mulch wet grass. For effective mulching, overlap mowing paths so that the clippings are distributed evenly. SECTION 6: MAKING ADJUSTMENTS “Go” Pedal WARNING: Do not at any time make any adjustment to riding mower without first stopping engine and disconnecting spark plug wire. Adjustment to the "Go" Pedal is made at the cable end. See Figure 12 . • • • Brake Pedal During normal operation of the rider mower, the brake is subject to wear and tear. Check the brake periodically by carrying out the following test: • • • Release the parking brake and place the rider mower in neutral. Depress the brake pedal and try to roll the rider mower. The tractor should not move. If the tractor moves, adjust the brake. • • WARNING: Do not adjust the brake while the engine is running. Be sure to block the wheels of the rider mower before making any adjustments on the brake cable. • Cutting Height Adjustment to the brake pedal is made at the cable end. See Figure 12 . • • • • • • • • Set the parking brake and turn ignition key off. Shift the cutting height lever to the lowest position. Pivot the hood assembly up and remove the grasscatcher bag and the side-discharge chute or the mulching plug from the mower. Disconnect wire from the spark plug. Locate the speed control cable under the front housing. See Figure 12 . Loosen the jam nuts and back the cable out to tighten or thread inward to loosen as shown. Retighten the jam nuts when proper tension is reached. Reconnect the spark plug wire and pivot the hood assembly down. The deck cutting height adjustment lever is located on the hood assembly. For a representation of the cutting height positions, refer to Figure 9. Set the parking brake and turn ignition key off. Shift the cutting height lever to the lowest position. Pivot the hood assembly up and remove the grasscatcher bag and the side-discharge chute or the mulching plug from the mower. Disconnect wire from the spark plug. Locate the brake cable on the right side under the front housing. See Figure 12 . Using a pair of 1/2” wrenches, loosen the jam nuts and back the cable out to tighten or thread inward to loosen. See Figure 12 inset. Retighten the jam nuts when proper tension is reached. Unlock the parking brake and repeat the test described above. Readjust if necessary. • • • • Pull the lever out of the slot and slide it upward or downward to the desired cutting height. Lower the cutting height to mow close to the ground. Raise the deck height to the highest position when you ride on a sidewalk or a road. To mow tall or thick grass, move the cutting height adjustment lever to the highest position and cut. Then move the lever to a lower position and cut again. Frame Brake Cable Lock Washer Speed Control Cable Cable* Jam Nuts Tighten Loosen *Same type of adjustment on both cables (only one shown here) Figure 12 13 Seat Position • The seat position on the rider mower can be adjusted to maximize the operator’s convenience. • • • • • Stop the mower completely and engage the parking brake. Turn ignition off. Pivot the hood assembly up. Loosen the four self-tapping screws on the bottom of the seat. Slide the seat forward or backward in the slot, and position it as desired. Retighten the four screws. • • If the belt is slipping when you depress the blade engagement pedal about 3/4”, loosen the two hex nuts on the cable. See Figure 13. If the belt is engaging sooner than when the blade engagement pedal is 3/4” from the PTO switch, tighten both hex nuts on the cable. See Figure 13. Repeat the blade engagement test and readjust if necessary. Pivot the hood assembly back. Wheel Alignment Blade Brake/PTO The front wheels should toe-in 1/16-5/16 inch. To adjust toe-in, follow these steps: The blade engagement pedal should be adjusted so that if you depress it about 3/4” from the front of the slot, it should start engaging the deck belt. The PTO (power take off) switch is located in the blade brake slot on the left side of the upper frame. See Figure 13 . The brake engagement pedal needs to make contact with the PTO switch for the engine to start. • • • Under normal operation, the blade engagement pedal should not require frequent adjustment. However, perform the following test periodically and make sure that it is in fine working condition. • • • Hex Nut Pivot the hood assembly up and check if there is enough slack on the deck engagement cable. Depress the blade engagement pedal (about 3/4 inch) and check if the belt is engaging. If the cable is tight or too loose or the belt is not engaging, adjust the deck engagement cable. Steering Segment NOTE: The deck engagement cable will be correctly adjusted when the cable moves approximately 1/2” off center line in both directions. Lock Washer A Tie Rod Ball Joint Adjustment to the blade brake will have to be made at the cable end. See Figure 13. front B 1/16-5/16’’ less than A Figure 14 Hex Nut Deck Engagement Cable Remove the 3/8’’ hex nut which holds the ball joint to the steering segment. See Figure 14. Adjust the ball joint in or out until the wheels toe-in approximately 1/16-5/16" (Dimension ‘‘B’’ should be approximately 1/16-5/16" less than dimension ‘‘A’’). See Figure 14. Replace the ball joint into the steering segment, and replace the 3/8’’ hex nut. Adjusting the Deck There are three tests for checking deck levelling on the rider mower. The results of each test will determine what kind of levelling, if at all, the equipment needs. IMPORTANT: Perform adjustments to the deck on a flat, level surface. Before continuing with deck adjustment, check air pressure in all four tires. Recommended air pressure is 12 psi. Please note that the valve stems on this rider mower are on the inside of the front wheels and on the outer side of the rear wheels. Blade Engagement Pedal Test 1: Checking Rear Deck Height Adjustment • PTO Switch • Figure 13 14 Lift the hood assembly and remove grass catcher from the rider mower. Place the deck in the highest position. Inspect rear of deck. If the deck is contacting the cable bracket on the front of the transmission, you will have to adjust the rear deck height. Test 2: Checking Front to Rear Levelling • • • Adjusting Rear Deck Height • • Place the deck in the highest position. Wearing a pair of heavy work gloves to prevent injury, rotate the cutting blade so that it is pointed front to back and parallel to the rider. Depress and lock the deck engagement pedal. Measure the distance from the front and the rear tips of the blade to the ground.The front should be approximately 1/4” to 3/8” lower than the rear. If the distance is higher, level the deck front to rear. • • Completely loosen, but do not remove, the top hex nut out of the three hex nuts that hold the hex bolt and the ferrule on the deck hanger link assembly. See Figure 15 . IMPORTANT: Do not try to loosen/ tighten the bottom nut. • • Test 3: Checking Side to Side Levelling • • If the two distances are unequal , level the deck side to side. Place the deck in the highest position. Wearing a pair of heavy work gloves to prevent injury, rotate the cutting blade so that it is pointed side to side and perpendicular to the rider. Depress and lock the deck engagement pedal. Measure the distance from the tips of the blade to the ground. • • Thread the middle nut as far down as possible. Locate the lower links at the rear of the deck. Working on one side at a time, disconnect the helper springs from them. Remove each lower link by removing both hair pin clip and washers. Reattach the lower links as shown in Figure 15 inset. Loosen hex nuts to adjust Helper Spring Do not adjust hex nut Remove Hairpin Clips and Washers Deck Lower Link Height Lever Ferrule Hanger Link Figure 15 Front to Rear Levelling • • • • • Place the deck in the highest position. Wearing a pair of heavy work gloves to prevent injury, rotate the cutting blade so that it is pointed front to back and parallel to the rider. Depress and lock the deck engagement pedal. Completely loosen, but do not remove, the top hex nut out of the three hex nuts that hold the hex bolt and the ferrule on the deck hanger link assembly. See Figure 15 . Side to Side Levelling • • • • IMPORTANT: Do not try to loosen/ tighten the bottom nut. • • Thread the middle nut up against the base of the ferrule. See Figure 15 . Tighten the upper nut against the top of the ferrule to lock adjustment. Thread the middle nut as far down as possible. Keeping an equal number of threads above each of the nuts, thread the upper nut down until the front tip of the blade is 1/4” to 3/8” lower than the rear tip of the blade. Note that threading this nut down will raise the front of the deck. • 15 Place the deck in the highest position. Wearing heavy work gloves to prevent injury,rotate the cutting blade so that it is pointed side to side and perpendicular to the rider. Depress and lock the deck engagement pedal. Loosen the middle hex nut. Thread the top hex nut up or down in order to set both tips of the blade at an equal height from the ground. Remember to thread the nut down to raise the deck, and thread up to lower the deck. Once the deck is level, thread the middle hex nut to tighten against the ferrule. Make sure the cut is even and the lift lever moves to all cutting heights. SECTION 7: SERVICING YOUR RIDER MOWER Fuse Replacement The fuse is located next to the spark plug under the rear frame. Fuses seldom fail without a reason. If the fuse blows, the source problem must be corrected or the new fuse will blow again. • • • • • • Deck Belt Cover Check for loose connections in the fuse holder and replace holder if necessary. A dead short may be in the cranking or charging circuit where insulation may have rubbed through and exposed bare wire. Replace the wire or repair with electrician’s tape if the wire strands have not been damaged. Also look for a wire pinched between body panels, burned by the exhaust pipe or muffler, or rubbed against a moving part. Stop the rider mower and engage the parking brake. Remove ignition key. Pivot the hood assembly up. Disconnect the spark plug wire and ground it. Pull the fuse out of the lead wire. Replace with new automotive fuse. Self-Tapping Screw • • 1. The lower drive belt goes from the variable speed pulley to the transmission pulley. 2. The upper drive belt goes from the variable speed pulley to the upper sheave of engine pulley. 3. The deck belt goes from the deck pulley to the lower sheave in engine pulley. • Periodically check to see if these belts are too loose or damaged through wear and tear. If so, replace with new belt. • Deck Pulley Remove belt from around deck pulley, idler pulley, and the engine pulley. Place the new belt around the deck pulley and the engine pulley making sure that the belt is routed inside the belt keepers. There are two belt keepers under the grass catcher, one on the idler and the other under the deck belt cover. See Figure 16. Reinstall deck belt cover and secure with two selftapping screws, lock washer and hex nut. NOTE: Belt keeper “A” must be mounted on the outside of the belt. • Deck Belt • Idler Pulley Figure 16 There are two drive belts and one deck belt in your rider mower; follow the description below to identify the belts. • Hex Nut Lock Washer Belt Replacement • Belt Keeper “A” Hex Nut Make sure to reconnect the spark plug wire before pivoting the hood assembly back. • Imaginary Line Belt Keeper Make sure to align the belt keeper in line with the frame. See Figure 16. NOTE: An imaginary line between the belt keeper and idler pulley should be parallel to frame. See Figure 16. Engage the parking brake and turn the ignition off. Pivot the hood assembly up and remove the grass catcher. Remove the spark plug wire. Put the deck at the lowest cutting height by adjusting the cutting height adjustment lever to the lowest position. Using a 1/2” socket wrench, remove two selftapping screws, lock washer and hex nut that hold the deck belt cover to the deck. See Figure 16 . For this, you will have to work from the top left side of the mower. Remove the belt cover. Using a 9/16” wrench, loosen the hex nut on the idler pulley. See Figure 16. • Replace the grass catcher and pivot the hood assembly back. Lower Variable Speed Belt • • 16 Remove the rear deck belt guard following first five steps for deck belt removal. Remove belt from the engine pulley. Push the spring loaded idler, located on the left side of the transmission, to the right. Remove belt from around the idler and then the transmission pulley. See Figure 17 . • Using a 9/16” socket, remove bolt, spacer and the flat washer from the variable speed pulley. See Figure 17 . • • • Variable Speed Pulley Spring Loaded Idler Spring Loaded Idler Upper Variable Speed Belt • • • • Transmission Pulley Drop the pulley down and remove the belt. Replace new belt and reassemble following above instructions in reverse order. Make sure that the belt is routed inside of belt keeper, and the belt keeper is reassembled in the same location from where it was removed. Remove the engine pulley using a 5/8” socket wrench with a 6” extension. The engine pulley is located in front of the transmission. Drop the engine pulley down and remove the belt from around it. Push the idler bracket to the right and remove the belt. See Figure 17 . Replace belt and reassemble in reverse order. Engine Pulley Deck Belt Figure 17 SECTION 8: MAINTAINING YOUR RIDER MOWER General Recommendations • • • • Remove blade from the spindle. See Figure 18. Deck Always observe safety rules when performing any maintenance. The warranty on this rider mower does not cover items that have been subjected to operator abuse or negligence. To receive full value from the warranty, operator must maintain the rider mower as instructed in this manual. We do not recommend the use of pressure washers or garden hose to clean your unit. These may cause damage to electrical components, spindles, pulleys, bearings or the engine. The use of water may shorten life of your rider mower and reduce its serviceability. Spindle Flange Nut WARNING: Always stop engine and disconnect spark plug wire before any maintenance or adjustments. Blade Figure 18 Sharpening Cutting Blade • Removal WARNING: Protect your hands by wearing heavy gloves or using a rag to grasp the cutting blade. • Remove the 5/8’’ hex flange nut which holds the blade to the blade spindle. 17 When sharpening the blade, follow the original angle of grind as a guide. It is extremely important that each cutting edge receives an equal amount of grinding to prevent an unbalanced blade. An unbalanced blade will cause excessive vibration when rotating at high speeds, may cause damage to the mower and/or cause personal injury. • Lubrication The blade can be tested for balance by balancing it on a round shaft screwdriver. Remove metal from the heavy side until it balances evenly. See Figure 20 for an illustration of the lube points described below. Reassembly • • • • Before reassembling the blade to the unit, lubricate the spindle with light oil (or engine oil). Be sure to properly align “star” fitting on blade with “star” on spindle. When replacing the blade, be sure to install the blade with the side of the blade marked “Bottom” (or with part number) facing the ground when the mower is in the operating position. Blade Mounting Torque: 70/90 foot-pounds maximum. Lube NOTE: To ensure safe operation, all nuts and bolts must be checked periodically for correct tightness. Lube Oil Drain Sleeve Lube Your rider mower has a plastic oil drain sleeve, packed with the loose parts, for draining oil from the crankcase. • • Lube To drain the oil, snap small end of the oil drain sleeve onto oil sump. See Figure 19. Remove drain plug and drain oil into a suitable container. Lube Oil Drain Sleeve Figure 19 Lube (before reassemby) Engine Refer to the separate engine manual for engine maintenance instructions. • • • Viewed from the bottom Maintain engine oil as instructed in the separate engine manual packed with your unit. Read and follow instructions carefully. Poor engine performance and flooding usually indicates that the air cleaner should be serviced. Service air cleaner as per the engine manual. Clean frequently under extremely dusty conditions. The spark plug should be cleaned and the gap reset once a season. Spark plug replacement is recommended at the start of each mowing season. Check engine manual for correct plug type and gap specifications. Figure 20: Lubrication Chart Blade Assembly • Lubricate blade assembly and deck spindle only while reassembling the blade either after sharpening or replacement. Pivot Points • Lubricate pivot points with light oil once a season. Steering Shaft and Gear • 18 Lubricate steering shaft and spline at least once a season with light oil. • Lubricate teeth of the external steering gears with automotive multi-purpose grease every 25 hours of operation or once a season. • Linkage • Lubricate all deck linkage and height adjustment linkage with a light oil. • Front Wheels • • Lubricate at least once a season with automotive multi-purpose grease. Engine • Maintain the engine as recommended in the separate engine manual. Fuel Filter Cleaning Engine • • Using a brush or cloth, remove grass, chaff or debris from the finger guard on the engine daily to prevent overheating of the engine. Do not clean with a forceful spray of water since water contaminates the fuel system. Keep the governor linkage, springs and controls free of debris. If engine muffler is equipped with spark arrester screen, remove and clean the screen regularly. Replace if damaged or plugged with debris.Clean muffler area and remove any grass or other debris before operating the unit. Your unit is equipped with a replaceable in-line fuel filter. Replace filter whenever contamination or discoloration is noticed. Order replacement filter through your engine authorized service dealer. Promptly wipe off any fuel or oil spilled on the machine with clean cloth. Clean the underside of the blade housing after each mowing. Do not let clippings or debris accumulate around the blade which may cause rust on the deck. SECTION 9: OFF-SEASON STORAGE If the machine is to be inoperative for a period longer than 30 days, prepare for storage as follows. Rider Mower • • • • • Clean the engine and the entire unit thoroughly. Lubricate all pivot points. Wipe the entire machine with an oiled rag to protect the surfaces. Store unit in a clean, dry area. Do not store next to corrosive materials, such as fertilizer. When storing any type of power equipment in an unventilated or metal storage shed, care should be taken to rustproof the equipment. Using a light oil or silicone, coat the equipment, especially any chains, springs, bearings and cables. • Engine • Battery • NEVER store battery without a full charge. Recharge battery before returning to service or every two months, whichever occurs first. When storing unit for extended periods, disconnect battery cables and remove the battery from the unit. Clean dirt and chaff from cylinder, cylinder head fins, blower housing, rotating screen and muffler area. Charge battery fully. The battery loses some of its charge each day when the unit is not used. 19 Refer to the engine manual for storage instructions. Make sure to store the engine properly so that your equipment can work smoothly afterwards. SECTION 10: TROUBLE-SHOOTING Trouble Excessive vibration Mower will not discharge grass or leaves uncut strips Broken Belt Belt comes off Belt shreds Possible Cause Remedial Action 1. Bent or damaged blade 1. 2. Bent blade. 2. 1. 2. Engine speed low. Speed selection. 1. 2. 3. 4. Cutting height set too low. Blades short or dull. 3. 4. 1. Sudden stop or shock load to belt 1. 2. Incorrect belt used 2. 3. Belt engaged abruptly 3. 4. Defective or damaged belt 4. 1. Belt too loose; stretched 1. 2. Broken or weak idler spring 2. 1. Belt guides or guards incorrectly adjusted 1. 2. Pulleys not aligned 2. 3. Pulley rusted or in otherwise bad condition; frozen bearing 3. 20 Stop engine immediately. Check all pulleys, blade adapters, keys and bolts for tightness and spindle damage. Tighten or replace any damaged parts. Stop engine immediately. Replace damaged blade. Only use original equipment blades. Throttle must be set at full throttle. Use lower ground speed. Slower the ground speed, better the quality of cut. Raise the deck. Sharpen or replace blades (uncut strip problem only). Inspect rider for cause such as foreign objects stuck in between deck and frame or belt path. Remove obstruction and check for damage. Replace belt if needed. Replace with proper belt. Check Parts list in this manual for correct part number. Engage belt slowly by depressing the blade engagement pedal slowly. Replace with proper belt. Follow instructions in Service and Adjustments section. Readjust belt. Replace if needed. Follow instructions for belt replacement in the Service and Adjustments section. Replace. Order with correct part number from Parts List in this manual. Adjust belt guides and guards so that these are approximately 1/16 to 1/8 inch from belt when engaged. Realign pulleys to be within approximately 1/16 inch of each other. Check with straight edge. Make sure fastening hardware is tight. Replace pulleys. Order with correct part number from the Parts List in this manual. Adjust new pulleys to 1/16 inch. Trouble Engine will not crank Engine cranks but will not start Engine smokes Possible Cause Remedial Action 1. Safety switch button not depressed 1. 2. Battery installed incorrectly 2. 3. Battery dead or weak. 3. 4. Blown fuse or circuit breaker 4. 5. Engine ground wire loose. 5. 1. Throttle/choke not in starting position. 1. 2. 3. No fuel to the carburetor Fuel line or in-line fuel filter plugged 2. 3. 4. No spark to spark plug 4. 5. Faulty spark plug 5. 6. Dirty air cleaner 6. 1. 2. 3. Engine oil has been overfilled Dipstick not seated or broken Engine loses crankcase vacuum 1. 2. 3. There are two switches in the starting circuit of your unit. Make sure that the actuator is fully depressing both switch buttons. Brake pedal must be depressed and blade engagement pedal disengaged. Install the battery with negative terminal attached to the black ground wire. Attach the positive terminal to the red wire which goes to the solenoid. Charge the battery fully before installation. Check fluid level in battery. If fluid level is low, fill to just below split rings with water. Charge with 6 Amp. charger until fully charged. If this does not work, replace battery. Replace fuse following instructions on page 17. Make sure the black ground wire runs from engine to frame or mounting bolt. Check owner's guide for correct position for throttle control/choke for starting. Gasoline tank empty. Fill with gasoline. Remove and clean fuel line. Replace filter if necessary. Spark plug lead disconnected. Connect lead. Hold spark plug lead away from engine block about 1/8". Crank engine. There should be a spark. If not, have engine repaired at authorized engine service dealer. To test, remove spark plug. Attach spark plug lead to spark plug. Ground the spark plug body against the engine block. Crank the engine. The spark plug should fire at the electrode. Replace if it does not. If the air cleaner is dirty, the engine may not start. Clean or replace as recommended by the engine manufacturer. Check oil level. Replace defective part. Engine breather defective. Replace. For repairs beyond those listed in the Trouble-Shooting chart above, please contact an authorized service dealer or call Yard-Man Customer Service at 1- (330) 220-4MTD (4683) or 1- (800)-800-7310. 21 SECTION 11: PARTS LIST FOR SERIES 320 2 1 Ref. No. Part No. Description 1 731-1869 Steering Wheel: 4 Spoke 2 731-1904 Steering Wheel Cap 1 Ref. No. 2 4 3 7 Part No. Description 1 731-1877 Steering Column: Green 2 731-1918 Control Knob 3 712-0142 Hex Nut 8-32 4 710-3217 Pan Head Machine Screw #8-32 5 710-0599 Hex Screw TT 1/4-20 x .50” 6 710-0514 Hex Screw 3/8-16 x 1.0” 7 712-0431 Lock Nut 8 749-1099 Bumper Tube*: Front * If equipped NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part numbered 700-xxxx is painted Yard-Man Green, the part number to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 0674 Powder Black: 0637 5 7 5 8 6 22 Model 320 Series 24 26 48 25 27 12 8 34 25 2 12 10 42 1 6 47 13 19 11 18 29 1 6 40 7 33 28 16 45 35 3 32 44 14 22 37 41 20 39 30 41 9 17 17 32 5 37 31 31 36 21 4 43 7 15 23 23 Model 320 Series Ref. No. Part No. Description Ref. No. Part No. Description 1. 17962 Switch Plate 25. 731-0511 Trim Strip 2. 650-0007 Steering Tube Assembly 26. 735-0265A Floor Pad: LH 3. 683-0033A Steering Support Bracket 27. 735-0266A Floor Pad: RH 4. 683-0178A Front Axle Assembly: RH 28. 736-0105 Bell Washer 5. 683-0179A Front Axle Assembly: LH 29. 736-0119 Lock Washer 6. 710-0224 Hex Screw AB 30. 736-0160 Flat Washer 7. 710-0459A Hex Screw 3/8-24 x 1.5” Gr.5 Sp. 31. 736-0169 Lock Washer 8. 710-0643 Lock Screw 5/16-18 x 1.0” Gr.5 32. 736-0187 Flat Washer 9. 710-0689 Hex Screw 1/2-13 x 0.75” 33. 736-0196 Flat Washer 10. 710-0837 Oval C-Sunk Screw #10-16 x 0.625” 34. 736-0242 Belleville Washer 11. 710-0958 Hex Screw 1/4-20 x 1.25 Gr.5 Sp. 35. 736-0272 Flat Washer 12. 710-1017 AB Screw 1/4-14 x 0.625” 36. 736-0320 Flat Washer 13. 710-1611B Self-Tapping Screw 5/16-18 x 0.75” 37. 736-3078 Flat Washer 14. 710-3008 Hex Screw 5/16-18 x 0.75” 38. 737-3007 Grease 15. 712-0116 Lock Nut 3/8-24 39. 738-0541 Spacer 16. 712-0206 Hex Nut 1/2-13 40. 738-3089A Steering Adapter 17. 712-0241 Hex Nut 41. 741-0225 Hex Flange Bearing 18. 712-0267 Hex Nut 42. 741-0356 Bearing: Steering Column 19. 712-0324 Lock Nut 1/4-20 43. 747-0955 Tie Rod 20. 712-0411 Lock Nut 44. 748-0290 Pinion Gear 21. 712-0711 Jam Nut 45. 750-0532 Spacer 22. 714-0470 Cotter Pin 46. 783-0411 Gear: Steering Segment 23. 723-0156 Ball Joint 47. 783-0565C Upper Frame Cover 24. 726-3046 Ratchet Clip 48. 783-0566A Lift Plate NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part numbered 700-xxxx is painted Yard-Man Green, the part number to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 0674 Powder Black: 0637 24 Model 320 Series 22 17 44 14 16 21 5 43 51 10 33 27 23 39 53 12 6 12 11 13 2 49 24 37 26 34 3 12 30 42 9 32 8 18 19 25 11 29 15 52 48 20 30 38 3512 13 4 40 47 28 50 28 34 36 31 11 1 40 12 40 45 46 28 28 25 7 41 40 28 Model 320 Series Ref. No. Part No. 1. 683-0155A Ref. No. Part No. Brake Pedal Assembly 28. 736-0187 Flat Washer Flat Washer Description Description 2. 683-0156A Variable Pedal Assembly 29. 736-0262 3. 683-0161 Shift Cam Assembly 30. 736-0272 Flat Washer .510 X 1.00 X .060 Flat Washer Lock Washer 4. 683-0275A Deck Pedal Assembly 31. 736-0300 5. 710-1017 Ab Screw 1/4-14 X .625 32. 736-0329 6. 711-0701 Clevis Pin 33. 736-0608 Spring Washer Flat Washer 7. 711-1156 Shaft 34. 736-3000 8. 712-0287 Hex Nut 1/4-20 35. 736-3019 Flat Washer .531 X 1.062 X .134 9. 712-0324 Lock Nut 1/4-20 36. 736-3020 Flat Washer .271 X .630 X .065 10. 712-3017 Hex Nut 3/8-16 37. 738-0255 Shoulder Screw .375 Dia X .18 Shoulder Screw 11. 714-0104 Internal Cotter Pin 38. 738-0373 12. 714-0111 Hairpin Clip 39. 738-0974 Shoulder Screw .375 X .380 X 1/4-20 13. 714-0470 Hairpin Clip 40. 741-0591 Flange Bearing 14. 720-0166 Ball Knob 41. 746-0935A Shift Cable 15. 726-0100 Push Cap 42. 746-0936 Variable Drive Cable 16. 726-0450 Plug Cap 43. 746-0937 Brake Cable 17. 731-0405 Snap-on Bushing 44. 746-0940 Deck Cable 18. 731-1913 Stop Lever 45. 746-0964 Throttle Choke Cable: 67” 19. 732-0815A Extension Spring 46. 747-0963A Brake Rod 20. 732-0865 Torsion Spring 47. 747-0964 Brake Lock Out Rod 21. 735-0261 Drive Pad 48. 750-0736 Shoulder Spacer 22. 735-0262 Deck Pad 49. 783-0473 Brake Lock Out Bracket 23. 735-0263 Brake Pad 50. 783-0525 Self-Propelled Pedal Link Shift Lever 24. 736-0117 Flat Washer 3/8 X .620 X .033 51. 783-0593A 25. 736-0133 Flat Washer.411 x 1.25” x .100 52. 783-0794 Bracket: Lock-Out Pedal 26. 736-0159 5/16 Washer 53. 726-0157 Cable Tie 27. 736-0169 Lock Washer NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part numbered 700-xxxx is painted Yard-Man Green, the part number to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 0674 Powder Black: 0637 26 Model 320 Series 27 8 25 27 5 22 14 3 19 16 26 28 12 13 23 19 6 29 18 1 21 10 2 21 7 17 24 11 13 20 4 Ref. No. Part No. Description Ref. No. Part No. Description 1. 683-0152 Pivot Link Assembly 16. 732-0829 Extension Spring 2. 683-0194A Lift Arm Assembly 17. 732-0837 Torsion Spring 3. 710-0376 Hex Screw 5/16-18 X 1.00 Gr.5 18. 736-0119 Lock Washer 5/16 4. 710-3230 Hex Bolt 1/2-13 X 2.75 Gr.5 Special 19. 736-0140 Flat Washer .385 I.D. x .620 O.D. 5. 711-0332 Lift Bracket Pin 20. 736-0169 Lock Washer 6. 711-1120 Lift Rod 21. 736-0257 Flat Washer 7. 711-3319 Ferrule 22. 736-0275 Flat Washer 5/16 8. 712-0266 Jam Nut 23. 736-3019 Flat Washer 9. 712-3008 Jam Nut 3/8-16 Gr. 5 24. 738-0145 Shoulder Screw 10. 712-3010 Hex Nut 5/16-18 25. 738-0183 Shoulder Screw 11. 712-3048 Jam Nut 26. 738-0958 Shoulder Spacer 12. 714-0104 Cotter Pin 27. 783-0435 Upper Deck Link 13. 714-0147 Cotter Pin 28. 783-0437 Axle Bracket: Rear 14. 714-3010 Cotter Pin 29. 783-0440 Lower Link 15. 720-0298 Handle Grip 27 9 15 Model 320 Series 4 9 12 8 14 3 6 7 10 11 5 13 1 2 Ref. No. 2 NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part numbered 700-xxxx is painted Yard-Man Green, the part number to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 0674 Powder Black: 0637 28 Part No. Description 1 629-0865 Harness Assembly Adapter 2 710-1208 Hex TT Screw 5/16-18 x 3.50 3 710-0227 Hex Washer Head Self-Tap.Scew 4 710-0805 Hex Screw 5/16-18 x 1.5 Gr. 5 5 710-0642 Thd. Forming Scr. 1/4-20x .75 6 712-3010 Hex Nut 5/16-18 7 714-0115 Cotter Pin 8 726-0320 Insulator Nut Plate 9 736-0289 Shoulder Bushing 10 736-0119 Lock Washer 5/16 11 736-0173 Flat Washer .28 I.D. x .74 O.D. x .083 12 750-1064 Spacer 13 783-0591 Transaxle Bracket 14 783-0433A Shift Lever Model 320 Series 2 8 30 15 32 20 15 6 22 7 13 9 10 19 17 23 27 5 12 2 14 31 25 1 25 22 24 18 29 26 23 7 9 4 Ref. No. 15 28 Part No. Description 11 1 683-0147 Idler Bracket Assembly 2 710-0191 Hex Screw 3/8-24 x 1.25 3 710-0314 Hex Screw 7/16-20 x 1.0” 4 710-0902 Cap Screw 3/8-24 x 3.75 16 5 710-1611B TT Screw 5/16-18 x .75 3 6 710-3096 Hex Screw 3/8-16 x 2.0 Special 7 712-0116 Jam Lock Nut 3/8-24 8 712-0241 Hex Nut 3/8-24 Ref. No. 9 712-3017 Hex Nut 3/8-16 21 737-0288 Grease 10 712-3035 Hex Jam Nut 9/16-18 (Gr. 5) 22 738-0968 Shoulder Spacer 11 714-0114 Square Key 23 741-0405 Bearing 12 717-0884 Variable Speed Pulley Assembly 24 750-0705 Spacer 13 732-0814 Extension Spring 25 754-0453 V-Belt 14 732-0815A Extension Spring 26 756-0116 Idler Pulley 15 736-0169 Lock Washer 27 756-0650 Transmission Pulley 16 736-0171 Lock Washer 7/16 I.D. 28 756-0658 Engine Pulley 17 736-0219 Bell Washer .406 I.D. x 1.13 O.D. 29 756-0981 Flat Idler Pulley 18 736-0247 Flat Washer 3/8 x 1.25 O.D. 30 783-0528 Idler Bracket 19 736-0427 Belleville Washer .567 x 1.125 x .06 31 783-0529 Cable Bracket 20 737-0167 Grease 32 683-0149B Frame 21 29 Part No. Description Model 320 Series 30 20 8 27 17 18 17 30 17 21 30 26 17 9 32 30 18 31 5 15 10 25 31 34 22 16 31 29 6 30 33 12 31 23 11 19 30 3 14 25 1 35 28 4 32 Ref. No. 1 3 4 5 6 8 9 10 11 12 14 15 16 17 18 19 Part No. 783-0605 783-0564A 783-0811 683-0264A 783-0554 783-0414A 783-0413 783-0412A 747-0985 736-3019 736-0275 736-0187 736-0101 735-0271 735-0199A 732-0829 Ref. No. Description Deck Stabilizing Bracket Front Frame: Upper Steering Gear Cover Front Channel Assembly Cam Bracket Frame Rail: Rear Frame Rail—L.H. Frame Rail—R.H. Deck Rod Flat Washer .531 X 1.062 X .134 Flat Washer 5/16 Flat Washer .64 I.D. X 1.24 X .06 Flat Washer 3/8 X 1.00 X .030 Rubber Bumper Rubber Bumper Extension Spring 20 21 22 23 25 26 27 28 29 30 31 32 33 34 35 30 Part No. 726-0272 725-0157 714-0470 714-0147 714-0104 712-0271 712-0265 711-1165 711-0332 710-1611 710-1017 710-0599 683-0163A 683-0160 683-0142 Description Clamp: 9/16 dia. Cable Tie Hairpin Clip Hairpin Clip Hairpin Clip Hex Nut Hex Nut 1/4-20 Clevis Pin Lift Bracket Pin TT Screw 5/16-18 x .75 Torx Mach. AB Scr. 1/4-14 x 0.625” Hex TT Screw 1/4-20 Steering Support Bracket Pivot Bracket Assembly: Hood Pivot Bar Assembly Model 320 Series 45 46 A 46 B 28 47 26 36 39 11 28 33 5 11 41 11 12 4 3 23 42 35 27 45 32 46 10 20 7 19 44 34 31 29 21 38 8 9 16 OIL 22 37 47 30 13 16 25 2 43 29 30 40 6 21 31 13 Model 320 Series Ref. No. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. Part No. Ref. No. Description 683-0149B 683-0190A 683-0191A 683-0192 710-0148 710-0157 710-0599 710-0624 710-0654A 710-0751 710-0871 710-1237 710-1611B 710-1653 711-0222A 712-0271 712-0291 712-0397 712-3017 712-3057 725-0157 726-0205 726-0209 731-0708 731-1682A 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. Frame Assembly Frame Rail Support: RH Frame Rail Support: LH Muffler Pipe Extension Hex Fl. Screw #8-32 x 0.375 Hex Screw 5/16-24 x .75” Gr.5 Self-Tapping Screw Hex Screw 5/16-24 x 1.5” Gr.5 TT Screw 3/8-16 x 1.0” Hex Screw 1/4-20 x 0.5” Hex Slot Sems Screw #10-32 x 0.38 TT Screw #10-32 x 0.625” TT Screw 5/16-18 x 0.75” Machine Screw #10-32 x 0.5” Battery Hold-Down Rod Hex Sems Nut 1/4-20 Lock Nut 1/4-20 Wing Nut with Bell Washer Hex Nut Hex Nut 5/16-24 Gr.5 Cable Tie Hose Clamp Cable Tie Battery Cover Oil Drain Sleeve 48 49 50 3 Ref. No. 1 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 5 8 10 11 4 6 7 13 9 14 12 5 2 32 Part No. 731-1945A 732-3080 735-0273 736-0119 736-0123 736-0159 736-0169 736-0188 736-0222 736-0329 736-0400 736-0607 737-0169 738-0960 741-0516 741-0591 751B213146 751-0535 751-0656 783-0624 783-0630 783-0809B 783-0561 710-3008 712-0267 Description Engine Duct Compression Spring Rubber Washer Lock Washer Flat Washer 5/16 Washer Lock Washer Flat Washer Lock Washer Lock Washer Flat Washer Lock Washer Motor Oil Shoulder Screw Flange Bearing Flange Bearing Throttle Casing Clamp Fuel Line Hose Fuel Tank Battery Bracket Fuel Tank Bracket Transaxle Support Bracket Hitch Plate (Optional) Hex Bolt Hex Nut Part No. Description 634-0139 Rear Wheel Compl. 634-0169 Front Wheel Compl. 734-1727 Rear Tire 734-1382 Front Tire 734-0255 Valve: Tubeless Air 737-0211A Grease Fitting 741-0353 Flange Bearing 634-0138 Rim Assembly 734-1455A Rim Assembly 710-0627 Hex Bolt 5/16-24 x .75” 736-0242 Beleville Washer 714-0115 Cotter Pin 736-0285 Flat Washer 736-0156 Flat Washer 731-0484A Hub Cap (not shown) Model 320 Series NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part numbered 700-xxxx is painted Yard-Man Green, the part number to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 0674 Powder Black: 0637 17 11 15 6 3 7 1 9 1 11 10 8 4 2 1 1 1 3 3 12 13 16 3 Ref. No. Part No. Description 1. 710-0599 TT Screw 1/4-20 x 0.5 2. 710-0870 3. Ref. No. Part No. Description 10. 783-0446 Plate: Hood TT Screw 3/8-16 x 0.62 11. 783-0447 Hood Bracket 710-1017 Torx AB Screw 1/4-14 x 0.625 12. 783-0448 Hood Bracket: Reinforcement 4. 720-0238 Rod End Grip 13. 783-0449A Hinge Bracket: Rear 6. 731-0511 Trim Strip 14. 783-0451A Pivot Plate: Rear Hood 7. 731-1691A Grass Bag Lens 15. 783-0545 Hood Screen 8. 783-0410 Bracket Reinforcement: Hood 16. 783-0562 Hinge Bracket: Front 9. 783-0445 Hood 17. 757-0364A Seat 33 Model 320 Series 13 6 MTD 7 12 10 7 9 7 14 4 3 5 8 2 11 1 Ref. No. Part No. Description 1. 618-0232 Differential Assembly: Single Speed 2. 618-0248 Drive Shaft assembly: LH Brake 3. 618-0072B Upper Housing Assembly 4. 611-0114 Detent Shaft Assembly 5. 661-0006 Brake Yoke Assembly: LH 6. 710-1206 Hex Washer Hd. TT Screw 1/4-20 x 2.37 Gr.5 7. 710-1325 Hex Washer Hd. TT Screw 1/4-20 x 1.65 8. 717-0678 Brake Puck 9. 719-0313B Lower Housing 10. 732-0863 Spring Detent 11. 737-0148 Grease 12. 741-0862 Ball Detent 13. 761-0202 Brake Disc 14. 777-6318 Label 34 Model 320 Series Ref. No. 17 23 4 34 26 16 9 24 35 21 19 27 8 36 6 8 33 31 25 29 3 37 26 32 22 7 18 39 9 20 38 14 5 2 14 11 20 20 28 14 5 9 22 24 13 12 10 1 30 15 NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part numbered 700-xxxx is painted Yard-Man Green, the part number to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 0674 Powder Black: 0637 35 Part No. Description 1. 618-0250 Spindle Assembly 2. 683-0150C Deck Assembly 3. 683-0159 Brake Bracket Assembly 4. 683-0173 Deck Belt Cover 5. 710-0134 Carriage Screw 1/4-20 x .62 6. 710-0191 Hex Bolt 3/8-24 x 1.25 Grade 8 7. 710-0347 Hex Screw 3/8-16 x 1.75 Gr. 5 8. 710-0599 Self-Tapp. Screw 1/4-20 x .5 9. 710-0650 Self-Tapp. Screw 5/16-18 x .75 10. 710-0672 Hex Cap Scr. 5/16-24 x 1.25 11. 710-0932 Carriage Screw 12. 710-1611B Torx Screw 5/16-18 x .75 13. 712-0241 Hex Nut 3/8-24 14. 712-0397 Wing Nut With Bell Washer 15. 712-0417A Flange Nut 5/8-18 16. 712-3017 Hex Nut 3/8-16 17. 712-3057 Hex Nut 5/16-24 18. 714-0115 Cotter Pin 19. 726-0201 Speed Nut 20. 726-0233 Push Nut 21. 732-0429A Extension Spring 22. 736-0101 Flat Washer 3/8 x 1.00 x .030 23. 736-0119 Lock Washer 5/16 24. 736-0169 Lock Washer 3/8 25. 736-0289 Bushing 26. 736-0300 Flat Washer .406 x .875 x .059 27. 736-0343 Flat Washer .330 x 1.25 x .120 28. 736-3020 Flat Washer 29. 738-0968 Spacer 30. 742-0651 Three-in-one Blade 31. 747-0957 Link Rod 32. 747-0972 Belt Keeper 33. 747-1172 Belt Keeper 34. 754-0754 V Belt 35. 756-0627 Flat Idler Pulley 36. 783-0463 Idler Bracket 37. 783-0529 Cable Bracket 38. 783-0569A Deck Plate 39. 783-0781 Deck Skirt 40. 783-0594 Deck Cable Bracket Model 320 Series 9 Ref. No. 16 9 3 23 3 9 9 22 23 25 1 2 23 23 23 23 11 14 5 11 11 26 20 11 7 21 4 10 27 24 17 23 13 12 23 24 15 18 6 19 8 36 Part No. Description 1 631-0060 Flow Indicator Assembly 2 631-0080 Grass Bag Assembly 3 710-0166 Machine Screw 1/4-20 x 1.0 4 710-0286 Machine Screw 1/4-20 x 0.5” 5 710-0456 Hex Screw #10-16 x 0.5” 6 710-0564 Hex Screw 1/4-20 x 2.75” 7 710-0642 Self-Tapping Screw 1/4-20 x 0.75” 8 710-0825 Hex Screw 1/4-20 x 3.75” 9 710-0924 Machine Screw 1/4-20 x 0.75” 10 711-0415 Clevis Pin 11 712-0271 Hex Sems Nut 1/4-20 12 712-0298 Jam Nut 13 712-0397 Wing Nut 14 714-0115 Cotter Pin 15 726-0271 Speed Nut 16 731-1441 Bag Handle 17 731-1743A Discharge Chute: Grass Bag 18 731-1744 Side-Discharge Chute 19 731-1745A Mulching Plug 20 732-0839 Bag Release Lever 21 732-0841 Torsion Spring 22 732-0854 Clip Spring 23 736-0173 Flat Washer 24 736-0329 Lock Washer 25 783-0544A Grass Bag Screen 26 783-0575A Pivot Bracket 27 783-0645 Deflector Plate Model 320 Series 6 A B C D E 5 6 A B C DE 6 9 10 A B C D E 9 1 8 2 3 4 9 11 9 Ref. No. Part No. Description 1. 629-0945 Harness Assembly w/o relays 2. 725-0267 Ignition Switch: 5 Pin 3. 725-1426 Solenoid: 12 V. 100 amp. 4. 725-1462 Seat Switch 5. 725-1643 Spring Switch 6. 725-1657A Interlock Switch 7. 725-1381 Fuse: 20 amp. 8. 725-1726 Battery Cover 9. 725-3237 Battery Cover: Red 10. 729-0357 Fuse Holder w/Clip 11. 729-0359 Harness Clip 37 7 Safety & Decorative Labels 38 Your Notes Date Comments 39 MANUFACTURER’S LIMITED WARRANTY FOR: The limited warranty set forth below is given by MTD PRODUCTS INC (“MTD”) with respect to new merchandise purchased and used in the United States, its possessions and territories. MTD warrants this product against defects in material and workmanship for a period of two (2) years commencing on the date of original purchase and will, at its option, repair or replace, free of charge, any part found to be defective in material or workmanship. This limited warranty shall only apply if this product has been operated and maintained in accordance with the Operator’s Manual furnished with the product, and has not been subject to misuse, abuse, commercial use, neglect, accident, improper maintenance, alteration, vandalism, theft, fire, water or damage because of other peril or natural disaster. Damage resulting from the installation or use of any accessory or attachment not approved by MTD Products Inc. for use with the product(s) covered by this manual will void your warranty as to any resulting damages. Normal wear parts or components thereof are subject to separate terms as follows: All normal wear part or component failures will be covered on the product for a period of 90 days regardless of cause. After 90 days, but within the two year period, normal wear part failures will be covered ONLY IF caused by defects in material or workmanship of OTHER component parts. Normal wear parts and components include, but are not limited to, belts, blades, blade adapters, grass bags, rider deck wheels, seats, snow thrower skid shoes, shave plates and tires. Batteries are covered by a 90-day limited replacement warranty. HOW TO OBTAIN SERVICE: Warranty service is available, WITH PROOF OF PURCHASE THROUGH YOUR LOCAL AUTHORIZED SERVICE DEALER. To locate the dealer in your area, please check for a listing in the Yellow Pages or contact the Customer Service Department of MTD PRODUCTS INC by calling 1-800-800-7310 or writing to P.O. Box 368022, Cleveland, Ohio 44136-9722. This limited warranty does not provide coverage in the following cases: a. The engine or component parts thereof. These items carry a separate manufacturer’s warranty. Please refer to the applicable manufacturer’s warranty on these items. b. Log splitter pumps, valves and cylinders have a separate one year warranty. c. Routine maintenance items such as lubricants, filters, blade sharpening and tune-ups, or adjustments such as brake adjustments, clutch adjustments or deck adjustments; and normal deterioration of the exterior finish due to use or exposure. d. MTD does not extend any warranty for products sold or exported outside of the United States of America, its possessions and territories, except those sold through MTD authorized channels of export distribution. No implied warranty, including any implied warranty of merchantability or fitness for a particular purpose, applies after the applicable period of express written warranty above as to the parts as identified. No other express warranty or guaranty, whether written or oral, except as mentioned above, given by any person or entity, including a dealer or retailer, with respect to any product shall bind MTD. During the period of the Warranty, the exclusive remedy is repair or replacement of the product as set forth above. (Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.) The provisions as set forth in this Warranty provide the sole and exclusive remedy arising from the sales. MTD shall not be liable for incidental or consequential loss or damages including, without limitation, expenses incurred for substitute or replacement lawn care services, for transportation or for related expenses, or for rental expenses to temporarily replace a warranted product. (Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above exclusion or limitation may not apply to you.) In no event shall recovery of any kind be greater than the amount of the purchase price of the product sold. Alteration of the safety features of the product shall void this Warranty. You assume the risk and liability for loss, damage, or injury to you and your property and/or to others and their property arising out of the use or misuse or inability to use the product. This limited warranty shall not extend to anyone other than the original purchaser, original lessee or the person for whom it was purchased as a gift. How State Law Relates to this Warranty: This limited warranty gives you specific legal rights, and you may also have other rights which vary from state to state.