OPERATOR’S MANUAL Chipper - Shredders Model Series 462 thru 465 (Model 465A shown) IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY 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 PRINTED IN U.S.A. FORM NO. 770-0371A SECTION 1: IMPORTANT SAFE OPERATION PRACTICES WARNING: 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 CHIPPER-SHREDDER. FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY. WHEN YOU SEE THIS SYMBOL: HEED ITS WARNING. WARNING: The Engine Exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. DANGER: Your chipper-shredder 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. This chipper-shredder is capable of amputating fingers and hands and throwing objects. Failure to observe the following safety instructions could result in serious injury or death. 1. GENERAL OPERATION • Always wear safety glasses or safety goggles, during operation and while performing an adjustment or repair, to protect eyes from foreign objects that may be thrown from the machine. • Read this operator's manual carefully in its entirety before attempting to assemble this machine. Read, understand, and follow all instructions on the machine and in the manual(s) before operation. Be completely familiar with the controls and the proper use of the machine before operating it. Keep this manual in a safe place for future and regular reference and for ordering replacement parts. • Never place your hands, feet, or any part of your body into the shredder hopper, chipper chute, discharge opening, or near any moving part while the engine is running. Keep clear of the discharge opening at all times. If it becomes necessary to push material into the chipper chute or shredder hopper, use a small diameter stick, NOT YOUR HANDS. • Your chipper-shredder is a powerful tool, not a plaything. Therefore, exercise extreme caution at all times. Your unit has been designed to perform two jobs; to chip and shred vegetation found in a normal yard. Do not use it for any other purpose. • If it is necessary for any reason to unclog the feed intake or discharge openings or to inspect or repair any part of the machine where a moving part can come in contact with your body or clothing, stop the machine, allow it to cool, disconnect the spark plug wire from the spark plug and move it away from the spark plug before attempting to unclog, inspect or repair. • Never allow children under age 16 to operate the unit. Children 16 years and older should only operate the unit under close parental supervision. Only responsible individuals who are familiar with these rules of safe operation should be allowed to use your unit. • Keep the area of operation clear of all persons, particularly small children and pets. Stop the engine when they are in the vicinity of the unit. Keep work area clean and clear of branches or obstacles which could cause you to stumble or fall. • Do not operate unit while under the influence of alcohol or drugs. • The machine should only be operated on a level surface. Never operate your unit on a slippery, wet, muddy or icy surface. Keep your work area clean and clear of branches or obstacles which could cause you to stumble and fall. Do not overreach. Maintaining proper footing and balance is essential to preventing accidents. • When feeding material into this equipment, be extremely careful that pieces of metal, rocks, bottles, cans or other foreign objects are not included. Personal injury or damage to the machine could result. • Do not allow an accumulation of processed material to build up in the discharge area as this will prevent proper discharge and can result in kickback from the chipper chute. • Wear sturdy, rough-soled work shoes and close fitting slacks and shirt. Shirt and slacks that cover the arms and legs and steel-toed shoes are recommended. Do not wear loose fitting clothes or jewelry and secure hair so it is above shoulder length. They can be caught in moving parts. Never operate a unit in bare feet, sandals or sneakers. Wear gloves when feeding material in the chipper chute or shredder hopper. • Keep your face and body back from chipper chute to avoid accidental bounce back of any material. • Do not transport machine while engine is running. 2 3. SERVICE • If the cutting mechanism strikes a foreign object or if your machine should start making an unusual noise or vibration, immediately stop the engine and allow the machine to come to a complete stop. Disconnect the spark plug wire and move it away from the spark plug. Take the following steps. • Use extreme care in handling gasoline and other fuels. They are extremely flammable and the vapors are explosive. • Store fuel and oil in approved containers, away from heat and open flame, and out of the reach of children. Check and add fuel before starting the engine. Never remove gas cap or add fuel while the engine is running. Allow engine to cool at least two minutes before refueling. • Inspect for damage. • Repair or replace any damaged parts. • Check for any loose parts and tighten to assure continued safe operation. • Replace gasoline cap securely and wipe off any spilled gasoline before starting the engine as it may cause a fire or explosion. • Never attempt to attach or remove catcher bag when engine is running. Shut the engine off and wait for the impeller to come to a complete stop. The impeller continues to rotate for a few seconds after the engine is shut off. Never place any part of the body in the impeller area until you are sure the impeller has stopped rotating. • Extinguish all cigarettes, cigars, pipes and other sources of ignition. • Never refuel unit indoors because flammable vapors will accumulate in the area. • Muffler and engine become hot and can cause a burn. Do not touch. • Never store the machine or fuel container inside where there is an open flame or spark such as a gas hot water heater, space heater, clothes dryer or furnace. • Do not allow leaves or other debris to build up on engine's muffler. The debris could ignite and cause a fire. • Do not attempt to shred or chip material larger than specified in this manual. Personal injury or damage to the machine could result. • Never run your machine in an enclosed area as the exhaust from the engine contains carbon monoxide, which is an odorless, tasteless and deadly poisonous gas. • Do not operate engine if air cleaner or cover over carburetor air intake is removed, except for adjustment. Removal of such parts could create a fire hazard. • To reduce fire hazard, keep engine and muffler free of leaves, grass, and other debris build-up. Clean up fuel and oil spillage. Allow unit to cool at least 5 minutes before storing. • Only use accessories approved for this machine by the manufacturer. Read, understand, and follow all instructions provided with the approved accessory. • Before cleaning, repairing, or inspecting, make certain the impeller and all moving parts have stopped. Disconnect the spark plug wire and keep wire away from spark plug to prevent accidental starting. Do not use flammable solutions to clean air filter. • If situations occur which are not covered by this manual, use care and good judgment. Contact your dealer for assistance. • Check the blade and engine mounting screws at frequent intervals for proper tightness. Also visually inspect blades for wear and/or damage (e.g., bent, cracked). Replace with blades which meet original equipment specifications. • Keep discharge chute deflector, chipper chute door, and all other guards and safety devices in place and operating properly. • Only operate unit in good daylight. Do not operate unit at night or in dark areas where your vision may be impaired. • Keep all nuts, bolts, and screws tight to be sure the equipment is in safe working condition. 2. CHILDREN • Never tamper with safety devices. Check their proper operation regularly. Tragic accidents can occur if the operator is not alert to the presence of small children. Children are often attracted to the chipper-shredder and the chipping and shredding activity. Never assume that children will remain where you last saw them. • After striking a foreign object, immediately stop the engine, disconnect the spark plug wire from the spark plug, and thoroughly inspect the unit for any damage. Repair damage before starting and operating unit. • Keep children out of the work area and under the watchful eye of a responsible adult other than the operator. • Do not alter or tamper with the engine's governor setting. The governor controls the maximum safe operating speed of the engine. Overspeeding the engine is dangerous and will cause damage to the engine and to other moving parts of the machine. • Be alert and turn the unit off if a child enters the area. • Never allow children under the age of 16 to operate the chipper-shredder. 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. 3 SECTION 2: SAFETY LABELS FOUND ON YOUR UNIT: DANGER TO AVOID SERIOUS INJURY: • DO NOT DEPOSIT BRANCHES LARGER THAN 1/2 INCH DIAMETER INTO THIS HOPPER. • WEAR APPROVED SAFETY GLASSES, GLOVES AND EAR PROTECTION. AVOID LOOSE FITTING CLOTHING. • Read the Owner's Manual before starting and using this chipper/shredder. • Keep hands, feet, face and clothing out of shredder hopper inlet and chipper chute inlet. • Keep hands, feet, face and clothing away from discharge area and moving parts. • Keep hands and feet out of discharge opening when chipper/shredder is running. The rotating cutting blades inside opening will cause serious personal injury. • Do not transport unit with engine running. • Keep bystanders, children, and pets away from operating and discharge • If chipper/shredder jams or becomes clogged, shut engine off right away and wait for all moving parts to come to a complete stop. Disconnect the spark plug wire and prevent it from touching the spark plug. Use only a long wooden stick (or long-handled shovel) to clear away discharged materials or blockages. • Keep all shields and guards in place and securely attached. • DO NOT use hands or feet to clear material from the discharge area or discharge opening. • DO NOT install parts, or remove, adjust, or service the discharge screen or any other part while the chipper/shredder is running. DO NOT operate the chipper/shredder on uneven ground, or on a paved, gravel, or hard surface. DO NOT run engine in an enclosed area-exhaust gas contains poisonous carbon monoxide fumes. WARNING TO AVOID A FIRE HAZARD, KEEP LEAVES, GRASS, AND OTHER COMBUSTIBLE MATERIALS AWAY FROM HOT ENGINE AND MUFFLER. AC AC 0158A 0158A WARNING: DO NOT OPERATE THIS MACHINE UNLESS THE CHUTE DEFLECTOR HAS BEEN PROPERLY INSTALLED AND IS SECURED WITH THE HAND KNOBS. ! DANGER ROTATING CUTTING BLADES. KEEP HANDS AND FEET OUT OF OPENING WHILE MACHINE IS RUNNING. 9342 AC 4 SECTION 3: FINDING YOUR MODEL NUMBER This Operator’s Manual is an important part of your new chipper-shredder. It will help you assemble, prepare and maintain your chipper-shredder. Please read and understand what it says. Before you prepare your chipper-shredder for its first use, please locate the model plate and copy the information from it in this Operator’s Manual. The information on the model plate is very important if you need help from your dealer or the MTD Customer Support Department. • Every chipper shredder has a model plate. You can locate it by standing behind the unit in the operating position and looking down at the frame next to the engine. • The model plate will look like this. This is where your model number will be. XXX-X-XXX-X-XXX XXXXXXXXXXX This is where your serial number will be. Copy the model number here: MTD PRODUCTS INC CLEVELAND, OHIO 44136 Copy the serial number here: SECTION 4: CALLING CUSTOMER SUPPORT If you are having difficulty assembling this product or if you have any question regarding the controls, operation or maintenance of this chipper shredder, please call the Customer Support Department. You can reach them by calling: 1-800-800-7310 Before you call, make sure that you have both your model and serial number ready. By having the model and serial number ready, you help the Customer Support Representative give you faster service. To find your units model and serial number, see SECTION 3: FINDING YOUR MODEL NUMBER. SECTION 5: UNPACKING INSTRUCTIONS REMOVE UNIT FROM CARTON • Remove staples, break glue on top flaps, or cut tape at carton end and peel along top flap to open carton. • Remove loose parts included with unit (i.e., owner’s manual, etc.). • Cut along dotted lines and lay carton down flat. • Remove packing material. • Roll or slide unit out of carton. Check carton thoroughly for loose parts. 5 SECTION 6: SET-UP INSTRUCTIONS This guide covers models 462B 5 H.P. thru 465A 8 H.P. chipper shredders. Much of this guide pertains to both models. However, there are some areas where only one model is covered. Use only the information that is appropriate for your model. Spark Plug Wire Start with Step 1 to set-up you new chipper shredder. All models. 1. Pull the spark plug wire off of the spark plug. See Figure 1 2. Remove six hex nuts (A) and six washers (B) from the weld studs on the flail housing. Leave the support plate in place on the weld studs. See Figure 2 3. Place hopper assembly into position in front of flail housing. Align holes in hopper assembly collar with weld studs on flail housing. 4. Slide hopper assembly onto weld studs. 5. Replace the washers (B) and the hex nuts (A). 6. Tighten the hex nuts (A). 7. Lift hopper until it clicks into the raised position. 8. Remove wing knobs (C) from each side of the discharge chute opening on the chipper shredder. See Figure 3 9. Use two 7/16" wrenches to remove hex lock nut (D). Remove two spacers (E), and hex bolt (F) from top of the housing assembly. For easy assembly, do not remove the second spacer from the hex bolt. 10. Place the discharge chute in position on the discharge opening. Insert hex bolt (F) and spacer (E) through hinge on discharge chute and housing (spacer fits inside of hinge). 11. Place second spacer (E) over hex bolt (F) inside the other half of the hinge. Secure with hex lock nut (D). Tighten securely. 12. Secure both sides of discharge chute to flail housing using wing knobs (C). Tighten wing knobs. Figure 1 Flail Housing Weld Stud Washer (B) Hex Nut (A) Hopper Assembly Support Plate Figure 2 Hex Lock Nut (D) Hex Bolt (F) Spacer (E) Hinge Wing Knob (C) Discharge Chute Figure 3 6 ATTACHING THE CHIPPER CHUTE (Model 465A 8 H.P. chipper shredder only) ALL MODELS 1. To attach the bag, place the opening of the bag over the chute deflector so it completely covers the chute deflector. See Figure 5 2. Depress the plunger on the drawstring, and pull on the drawstring until the bag is tight around the chute opening. Release plunger to lock it into position. See Figure 5 Chipper Chute Weld Stud (A) Weld Stud (A) Hex Bolt Flat Washer Hex Nut Frame Brace Weld Stud (A) 1. 2. 3. 4. 5. 6. 7. 8. 9. Figure 4 Remove the three cupped washers and hex nuts from the weld studs beside (A) the opening on the left side of the housing. See Figure 4 Remove the two hex bolts, lock nuts, and flat washers from the two holes on the upper end of the brace. Place the chipper chute over the weld studs so the slot on the chute is towards the bottom. Align the three holes on the chute with the three weld studs. Replace the three cupped washers (cupped side against the chipper chute) and hex nuts that you removed in step 1. Do not tighten the nuts at this time. Make sure to place the cupped side of the washer against the chipper chute. Your unit is shipped with one end of the brace already secured to the lower frame. Loosen the bolts securing the brace to the frame. Align the holes on the chute with the holes on the brace. Attach brace to chipper chute with the hardware removed earlier from the brace. See the illustration above for proper order. Tighten. Tighten the bolts securing the brace to the frame. Tighten the three nuts on the weld studs holding the chipper chute to the flail housing. Figure 5 3. Fill engine with oil as instructed in separate engine manual included with your unit. 7 SECTION 7: CONTROLS SECTION 8: OPERATION STOPPING ENGINE Move throttle control lever to STOP position. Disconnect spark plug wire and move away from spark plug to prevent accidental starting. WARNING: Before using your chippershredder, again refer to practices of this manual. careful. Release Knob the safety Always be GASOLINE AND OIL FILL-UP See engine manual included with your unit • If the unit runs out of gas as it is shredding or chipping, it may be necessary to unclog the unit before it can be restarted. Refer to Removing the Flail Screen in Maintenance section. Choke Lever Throttle Control Starter Handle STARTING ENGINE WARNING: Be sure no one other than the operator is standing near the chippershredder while starting or operating. Do not operate this chipper-shredder unless the chute deflector has been properly installed and is secured with the hand knobs. Figure 6 Release Knob: Used to release the hopper when raising or lowering. NOTE: To prevent the unit from sliding, place your Choke Lever: Used to enrich the fuel mixture in foot firmly against the wheel. 1. Attach spark plug wire and rubber boot to spark plug. 2. Move starter switch to ON position. 3. Move choke lever to CHOKE position. 4. If restarting a warm engine after a short shutdown, move choke lever to No Choke position. 5. Grasp starter handle and pull rope out slowly until engine reaches start of compression cycle (rope will pull slightly harder at this point). Let the rope rewind slowly. 6. Pull rope with a rapid full arm stroke. Let rope return to starter slowly. 7. When engine starts, move choke lever to half choke position until engine runs smoothly and then to No Choke position. 8. If engine fails to start after three pulls, move choke lever to No Choke position and pull starter rope again. 9. If engine fires, but does not continue to run, move choke lever to Full Choke position and pull rope again. the carburetor when starting a cold engine. Starter Handle: Used to manually start the engine. Hopper Assembly: Allows leaves and small branches up to 1” diameter to be fed into the impeller for chipping and shredding. Lower the hopper to collect raked material for shredding. Throttle Control (if equipped): Regulates speed of the engine. Chipper Chute: Allows bulky vegetation like stalks or heavy branches to be fed into the impeller for chipping and shredding. Maximum diameter is 3” on model 465A and 2” on model 462B. Catcher Bag (Not Shown): Used to collect the shredded material. 8 IMPORTANT: There is a flail screen located 10. Move choke lever to OFF position as engine warms up. inside the housing in the discharge area. If the flail screen becomes clogged, remove and clean as instructed in the Maintenance section. NOTE : A noise will be heard when finding the start of the compression cycle. This noise is caused by the flails and fingers which are part of the shredding mechanism falling into place, and should be expected. In addition, the flails and fingers will be noisy after the engine is started, until the impeller reaches full speed. WARNING: The chipper-shredder discharges materials with considerable velocity. Keep away from the area around the discharge chute. Always stop the engine and disconnect spark plug wire when removing or attaching the bag, changing containers, or removing the shredded material. Wear safety glasses and gloves whenever using your chippershredder. USING YOUR CHIPPER-SHREDDER WARNING: Do not attempt to shred or chip any material other than vegetation found in a normal yard (i.e., branches, leaves, twigs, etc.). SECTION 9: MAINTENANCE • Leaves and small branches up to 1/2" diameter (maximum) can be fed into the hopper assembly when it is in the raised or lowered position. GENERAL RECOMMENDATIONS • Always observe safety rules when performing any maintenance. • For model 462B (5 H.P.), bulky material, such as stalks or heavy branches, up to 2” in diameter should be fed into the chipper chute. • The warranty on this chipper shredder does not cover items that have been subjected to operator abuse or negligence. To receive full value from the warranty, operator must maintain the chipper shredder as instructed in this manual. • For model 465A (8 H.P.), bulky material, such as stalks or heavy branches, up to 3” in diameter should be fed into the chipper chute. WARNING: Do not put material larger • Periodically check all fasteners and make sure these are tight. than is specified into the hopper, and/or into the chipper chute. Personal injury or damage to the machine could result. WARNING: Always stop the engine and disconnect the spark plug wire before performing any maintenance or adjustments. Never remove discharge chute till the engine has completely stopped. • If it becomes necessary to push material into the chipper-shredder, use a small diameter stick -- NOT YOUR HANDS. The stick should be small enough that it will be ground up if it gets into the impeller assembly. WARNING: Temperature of muffler and LOWERING THE HOPPER ASSEMBLY nearby areas may exceed 150o F(65oC). Avoid these areas. 1. To lower the hopper assembly, use one hand to grasp the hand-hold at the top of the hopper assembly and lift slightly. 2. Pull out on the release knob, and lower the hopper assembly to the ground. LUBRICATION Lubricate the pivot points on the release knob bracket, hopper assembly, chute deflector and once a season using a light oil. NOTE: For best performance, it is important to keep the shredding blade and the chipper blades sharp. If the composition of the material being discharged changes (becomes stringy, etc.) or if the rate at which the material is discharged slows down considerably, it is likely that the shredding blade and/ or chipper blades are dull and need to be sharpened or replaced. Refer to Maintenance section. CLEANING • Clean engine periodically. Remove dirt and debris with a cloth or brush. • Frequently remove leaves, dirt and debris from cooling fins, air intake screen and levers and linkage. This will help ensure adequate cooling and correct engine speed. 9 SPARK PLUG • Clean the chipper shredder by running water from a hose through the hopper assembly and chipper chute with the engine running. Allow the chipper-shredder to dry thoroughly. • Service the spark plug according to the separate engine owner’s guide supplied with your chipper shredder. NOTE: Cleaning with a forceful spray of water is REMOVING THE FLAIL SCREEN (See Figure 7) not recommended as water could contaminate the fuel system. • Wash the bag periodically with water. Allow to dry thoroughly in the shade. Do not use heat. If the discharge area becomes clogged, remove the flail screen and clean area as follows: 1. Stop engine, make certain the chipper-shredder has come to a complete stop and disconnect spark plug wire from the spark plug before unclogging the chute. 2. Remove the two hand knobs on each side of the discharge chute (also called the chute deflector). 3. Lift the discharge chute up, and keep it out of the way. 4. Remove two hairpin clips from the clevis pins which extend through the housing. Remove the clevis pins. 5. Pull the flail screen from inside the housing. 6. Clean the screen by scraping or washing with water. 7. Reinstall the screen. 8. Put the discharge chute back to its original position and tighten the hand knobs. ENGINE OIL The engine oil is the most important “insurance policy” your new chipper shredder has. It protects it from excess wear and tear and helps the cooling process. It is important that you maintain the engine oil at the proper level and that it is changed on a regular basis. • Service the engine oil according to the separate engine owner’s guide supplied with your chipper shredder. AIR CLEANER The air cleaner prevents damaging dirt, dust, etc., from entering the carburetor and being forced into the engine and is important to engine life and performance. Never run the engine without air cleaner completely assembled. NOTE: Be certain to reassemble the flail screen • Service the air cleaner according to the separate engine owner’s guide supplied with your chipper shredder. with the curved side down CARBURETOR WARNING: If any adjustments are made to the engine while the engine is running (e.g. carburetor), keep clear of all moving parts. Be careful of heated surfaces and muffler. Hex Nuts Washers Hairpin Clip Clevis Pin Discharge Chute Flail Screen Chipper Chute • Service the carburetor according to the separate engine owner’s guide supplied with your chipper shredder. Hand Knobs ENGINE SPEED Figure 7 • The engine speed on your chipper-shredder has been set at the factory. Do not attempt to increase engine speed or it may result in personal injury. If you believe the engine is running too fast or too slow, take your chippershredder to the nearest service center for repair and adjustment. SHARPENING OR REPLACING THE CHIPPER BLADES (See Figure 8) All models 1. Disconnect spark plug wire and move it away from spark plug. 2. Remove the flail screen as instructed in previous section. 10 3. Using a 1/2” wrench, remove the chipper chute by removing three hex nuts and washers. Model 465A only Allen Screws 4. Use a 7/16” wrench, to remove the brace holding the chipper chute to the frame by removing the hex bolts. Weld Bolt All models Pipe 5. Rotate the impeller assembly by hand until you locate one of the two chipper blades in the chipper chute opening. Remove the blade, using a 3/16" allen wrench on the outside of the blade and 1/2" wrench on the impeller assembly (inside the housing). Torque Wrench Blade Figure 9 3. Remove the six hex lock nuts and lock washers from the housing weld bolts using a 1/2" wrench. Separate the chipper-shredder into two halves. 4. Remove the support plate. Slot Blade NOTE: When reassembling, make certain the embossed tab faces inward towards the impeller, and opening on the support plate is toward the bottom of the unit. 6. 7. 8. 9. 10. 5. Remove the two hand knobs and cupped washers which secure the discharge chute. Raise the discharge chute. 6. Insert a 1/2" or 3/4" diameter pipe through the flail screen into the impeller to keep it from turning, or remove the flail screen and insert a piece of wood (2 x 4) into the chute opening. 7. Remove the two outside screws on the blade, using a 3/16" allen wrench and a 1/2" wrench. 8. Remove the blade by removing the center bolt, lock washer and flat washer. Figure 8 Remove the other blade in the same manner. Replace or sharpen blades. If sharpening, make certain to remove an equal amount from each blade. Reassemble in reverse order. Make certain blades are reassembled with the sharp edge facing the direction shown in Figure 8 (sharp edge is assembled toward the slotted opening at the bottom). Torque bolts and nuts to 250-350 inch-pounds. WARNING: Use caution when removing the blade to avoid contacting the weld bolts on the housing. 9. 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. 10. An unbalanced blade will cause excessive vibration when rotating at high speeds and may cause damage to the unit. The blade can be tested for balance by balancing it on a round shaft screwdriver or nail. Remove metal from the heavy side until it is balanced evenly. See Figure 10 SHARPENING OR REPLACING THE SHREDDER BLADE The shredder blade may be removed for sharpening or replacement as follows. See Figure 9 1. Disconnect spark plug wire and move it away from spark plug. 2. Lower the hopper assembly. Block up the housing. 11 11. When reassembling the blade, tighten center bolt to between 550 and 650 inch-pounds and the two outer bolts to between 250 and 350 inch-pounds, or lacking torque wrench, tighten securely. SECTION 10: OFF-SEASON STORAGE Prepare your chipper-shredder for storage at the end of the season or if the unit will not be used for 30 days or more. The following steps should be taken to prepare your shredder for storage. 1. Clean and lubricate the shredder thoroughly. 2. Refer to engine manual for correct engine storage instructions. 3. If storing an unventilated or metal storage shed, coat metal parts with a light oil or silicone to prevent rust. 4. Store in a cool dry place. Do not store next to corrosive materials such as fertilizer. 1. Insert screw driver through hole 2. Blade should be parallel to ground Screw Blade Driver Ground Figure 10 SECTION 11: TROUBLE SHOOTING GUIDE Trouble Possible Cause(s) Corrective Action Engine fails to start Dirty air cleaner. Choke not in ON position. Spark plug wire disconnected. Cannot pull recoil cord. Refer to the engine manual packed with your unit. Move switch to ON position. Connect wire to spark plug. Obstruction lodged in impeller. Stop immediately and disconnect spark plug wire. Remove lodged object. Fill tank with clean, fresh gasoline. Fuel will not last over thirty days unless a fuel stabilizer is used. Open fuel shut-off valve. Fuel tank empty, or stale fuel. Fuel shut-off valve closed (if so equipped). Faulty spark plug. Spark plug wire loose. Unit running on CHOKE. Blocked fuel line or stale fuel. Clean, adjust gap or replace. Connect and tighten spark plug wire. Move choke lever to OFF position. Clean fuel line; fill tank with clean, fresh gasoline. Fuel will not last over thirty days unless a fuel stabilizer is used. Disconnect fuel line at carburetor to drain fuel tank. Water or dirt in fuel system. Refill with fresh fuel. Refer to the engine manual packed with your unit. Carburetor out of adjustment. Refer to the engine manual packed with your unit. Dirty air cleaner. Engine overheats Carburetor not adjusted properly. Refer to the engine manual packed with your unit. Dirty air cleaner. Refer to the engine manual packed with your unit. Engine oil level low. Fill crankcase with proper oil. Too much vibration Loose parts or damaged Stop engine immediately and disconnect spark plug impeller. wire. Have unit serviced by an authorized service dealer. Unit does not discharge Discharge chute clogged. Stop engine immediately and disconnect spark plug wire. Clean flail screen and inside of housing. See Maintenance section of this manual. Always run engine at full throttle Low engine RPM. Stop engine immediately and disconnect spark plug Foreign object lodged in wire. Remove lodged object. impeller. Low engine RPM. Always run engine at full throttle Rate of discharge slows considerably or composition Shredding blade and/or chipper Replace shredding and chipper blades or see your blades dull. authorized service dealer. of discharged material changes Loss of power; operation erratic Note: For repairs beyond the minor adjustments above, contact your local authorized service dealer. 12 SECTION 12: ILLUSTRATED PARTS LIST TOW HITCH KIT Model Number 290-010-000 For Models 462B, 463C, 465A REF. NO. 1 2 3 4 5 6 7 8 9 PART NO 681-0133 681-0134 710-3001 711-0299 711-0835 712-0798 732-0194 736-0133 736-0169 N N DESCRIPTION Tow Bar Tongue Tow Bar Base Hex Hd. Cap Scr. 3/8-16:.880 Lg. Pin, Clevis - .625 x 2.40 Lg. Pin, Clevis - .500 Dia. x 4.62 Lg. Hex Nut 3/8-16 Spring Pin Fl. Wash. .411 x 1.25 x 1.00 Lock Wash. 3/8 Reg. 13 Model 462B, 463C, 465A 14 Model 462B, 463C, 465A REF. NO. 1 2 4 5 6 8 10 12 13 14 15 16 17 19 20 22 24 25 26 27 29 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 PART NO. 742-0571 710-1254 736-0217 736-0247 719-0329 711-0833B 715-0166 681-0030 781-0490 710-1054 712-0411 736-0119 710-0825 750-0793 711-0835 712-3027 781-0457 714-0149B 681-0094 712-3010 681-0048 681-0095 736-0170 712-3004A 781-0510B 710-0157 736-0119 710-3008 710-0442 681-0004A 681-0117 735-0639 — 681-0104 681-0123 710-0118 710-0376 711-1128 712-0429 714-0104 REF. NO. 52 Blade 53 Hx Patch Bolt 3/8-24 x 2.25" (Gr. 8) 54 L-Wash. 3/8" I.D. H.D. 55 Fl-Wash. .406" I.D. x 1.25" O.D. Hdn. 56 Flail Blade 57 Clevis Pin .496" Dia. 58 Spring Roll Pin 1.00" Lg. Impeller Ass’y. Comp. (Incl. Ref. 1, 6, 8, 59 60 10, 12, 13, 14) 61 Chipper Blade 62 Flat Hd. Scr. 5/16-24 x .75" Lg. Hex Top L-Nut 5/16-24 (Gr. 5) 63 L-Wash. 5/16" I.D. Hex Bolt 1/4-20 x 3.75" Lg. 64 Chute Hinge Spacer 1.66" Lg. 65 Clevis Pin .5" Dia. x 4.62" Lg. 66 Hex Flg. L-Nut 1/4-20 Thd. 67 Shredder Screen 68 Internal Cotter Pin 3/8" Dia. 69 Chute Deflector Ass’y. 70 Hex Nut 5/16-18 Thd. (Gr. 5) 71 Hand Knob Ass’y. 72 Chipper Chute Ass’y.† 73 Spec. L-Wash. 5/16" I.D. 74 Hex Nut 5/16-18 Thd. (Gr. 5) 75 Shredder Frame 76 Hex Bolt 5/16-24 x .75" Lg. 77 L-Wash. 5/16" I.D. 78 Hex Bolt 5/16-18 x .75" Lg. (Gr. 5) 79 Hex Bolt 5/16-18 x 1.50" Lg. — Flail Housing Ass’y.—L.H. Flail Housing Ass’y.—R.H. 80 Spark Plug Boot (Optional) 81 Engine 82 Bracket Ass’y. - R.R. 83 Bracket Ass’y. - Frt. 84 Hex Bolt 5/16-18 x .75" Lg. (Gr. 2) 85 Hex Bolt 5/16-18 x 1.0" Lg. (Gr. 5) 86 Lock Rod 87 Hex L-Nut 5/16-18 88 Internal Cotter Pin .072 x 1.12 Lg. DESCRIPTION N N N N N N N PART NO. 731-1707 731-1710 732-0306 736-0117 736-0264 736-0362 750-0785 726-0214 737-0195 750-0786 738-0814 738-0813 734-1600 734-1597 734-1455A 741-0487A 734-0255 737-0211 681-0068 710-0106 710-0258 712-3027 728-0175 731-1899 735-0249 736-0173 749-1004 781-0633 781-0515 781-0574 764-0199A 723-0400 726-0211 781-0735 710-0599 710-1502 712-3004A 7360329 751-0447 751-0632 751-0646 N N N N † Model 462B only †† Modle 462B/463C ††† Model 465A xx Model 463C/465A 15 DESCRIPTION Hopper Collar—Hopper Compression Spring Flat Wash. 3/8 x .620 x .033 Flat Wash. .330 x .630 x .06 Flat Wash. .320 I.D. x 1.25 O.D. Spacer .382 I.D. x .50 O.D. x 1.12 Push Cap 5/8" Dia. Rod Drain Elbow† Spacer .64 I.D. x .38" Lg. Shredder Axle†† Shredder Axle††† Wheel Ass’y. Comp.†† Wheel Ass’y. Comp.††† Rim Only††† Flange Bearing .632" I.D.††† Air Valve††† Grease Fitting xx Chute Ass’y. xx Hex Bolt 1/4-20 x 1.25 xx Hex Bolt 1/4-20 x 0625 xx Lock Nut 1/4-20 xx Pop Rivet xx Chipper Chute xx Chute Flap xx Flat Wash. .28 I.D. xx Chute Support xx Flat Strip xx Front Support Bracket Back Up Plate Bag (Not Shown) Safety Glasses (Not Shown) U-Nut Spring Clip Scr. TT. 1/4-20: .5” Scr. AB 8-18:.375 Nut-Lock Hx. Flg. 5/16-18 Lockwasher Deflector Guard - Muffler Bracket - Muffler Guard MANUFACTURER’S LIMITED WARRANTY FOR: For TWO YEARS from the date of retail purchase within the United States of America, its possessions and territories, MTD PRODUCTS INC will, at its option, repair or replace, for the original purchaser, free of charge, any part or parts found to be defective in material or workmanship. This warranty covers units which have been operated and maintained in accordance with the operating instructions furnished with the unit, and which have not been subject to misuse, abuse, commercial use, neglect, accident, improper maintenance or alteration. products sold or exported outside of the United States of America, its possessions and territories, except those sold through MTD PRODUCTS INC’s authorized channels of export distribution. Normal wear parts or components thereof are subject to separate terms as noted below in the “No Fault Ninety Day Consumer Warranty” clause. 3. Log splitter pumps, valves and cylinders or component parts thereof are covered by a one year warranty. All normal wear part failures will be covered on this product for a period of 90 days regardless of cause. After 90 days, but within the two year period, normal wear parts failures will be covered ONLY IF caused by defects in material or workmanship of OTHER component parts. Normal wear parts are defined as batteries*, belts, blades, blade adapters, grass bags, rider deck wheels, seats, snow thrower skid shoes, shave plates and tires. 4. All other warranties, express or implied, including any implied warranty of merchantability or fitness for a particular purpose, are hereby expressly disclaimed in their entirety. 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 the yellow pages or contact the Customer Service Department of MTD PRODUCTS INC, P. O. Box 368022, Cleveland, Ohio 44136-9722. Phone 1 (800) 800-7310. The return of a complete unit will not be accepted by the factory unless prior written permission has been extended by the Customer Service Department of MTD PRODUCTS INC. Transportation charges: Transportation charges for the movement of any power equipment unit or attachment are the responsibility of the purchaser. Units exported out of the United States: MTD PRODUCTS INC does not extend any warranty for Other Warranties: 1. The engine or component parts thereof carry separate warranties from their manufacturers. Please refer to the applicable manufacturer’s warranty on these items. 2. *Batteries are covered by a 90-day replacement warranty. 5. The provisions as set forth in this warranty provide the sole and exclusive remedy of MTD PRODUCTS INC’s obligations arising from the sales of its products. MTD PRODUCTS INC will not be liable for incidental or consequential loss or damage. 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. Certain disclaimers are not allowed in some states and therefore they may not apply to you under all circumstances. NOTE: This warranty does not cover routine maintenance items such as lubricants, filters, blade sharpening and tune-ups, or adjustments such as brake adjustments, clutch adjustments or deck adjustments. Nor does this warranty cover normal deterioration of the exterior finish due to use or exposure.