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OPERATOR'S MANUAL
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 forest-
covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a spark arrester meeting
applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator.
In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have
similar laws. Federal laws apply 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.
45" Snow Thrower
Model 31AE993J401
FORM NO.
770-10541.fm
(6/2001)
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Summary of Contents for Yard-Man 31AE993J401
- Page 1 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. 45” Snow Thrower Model 31AE993J401 FORM NO. 770-10541.fm (6/2001)
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Page 2: Table Of Contents
Content Important Safe Operation Practices... 3 Assembling Your Snow Thrower ... 5 Knowing Your Snow Thrower ... 7 Operating Your Snow Thrower ... 9 Making Adjustments ... 10 Maintaining Your Snow Thrower... 11 Servicing Your Snow Thrower ... 13 Trouble Shooting Guide... 17 Parts List... -
Page 3: Section 1: Important Safe Operation Practices
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 this machine. Failure to comply with these instructions may result in personal injury. -
Page 4: Maintenance And Storage
Never run an engine indoors or in a poorly ventilated area. Engine exhaust contains carbon monoxide, an odorless and deadly gas. Do not operate machine while under the influence of alcohol or drugs. Muffler and engine become hot and can cause a burn. Do not touch. -
Page 5: Section 2: Assembling Your Snow Thrower
SECTION 2: ASSEMBLING YOUR SNOW THROWER NOTE: Any reference in this manual to the left or right side of the snow thrower is observed from the operator’s position. Unpacking • Remove staples from the top, sides, and ends of the shipping crate. •... -
Page 6: Final Adjustments
• Tighten the two wing nuts already in place on the upper holes and secure the handles firmly.Slide the shift rod connector down over the end of the lower shift rod. Tap the connector until it locks over the lower shift rod. See Figure 2. NOTE: If the connector is not properly assembled, the shift rod will pivot and you will not be able to change... -
Page 7: Section 3: Knowing Your Snow Thrower
• Recheck adjustment; readjust as necessary and tighten the jam nut. “Z” End Jam Nut Auger Control Cable Figure 7 Skid Shoes The space between the shave plate and the ground can be adjusted by repositioning the skid shoes. For close snow removal, as when using on a smooth concrete or asphalt driveway, place the skid shoes in the low position. -
Page 8: Discharge Chute
Always release traction the control before IMPORTANT: changing speeds. Forward Your snow thrower has six forward (F) speeds. Position number one (1) is the slowest and position number six (6) is the fastest. Reverse Your snow thrower has two reverse (R) speeds. R1 is the slower, while R2 is the faster of the two. -
Page 9: Section 4: Operating Your Snow Thrower
SECTION 4: OPERATING YOUR SNOW THROWER Before Starting WARNING: Read, follow all instructions and warnings on the machine and in this operating. Gas And Oil Fill-up Service the engine with gasoline and oil as instructed in the separate engine manual packed with your snow thrower. -
Page 10: Section 5: Making Adjustments
To Stop Engine • Run engine for a few minutes before stopping to help dry off any moisture on the engine. • To help prevent possible freeze-up of starter, proceed as follows. Electric Starter: • Connect power cord to switch box on engine, then to 120 volt AC receptacle. -
Page 11: Chute Assembly
• Loosen the jam nut on the traction drive cable and thread the cable in or out as necessary. Refer to Figure 7. • Retighten the jam nut to secure the cable when correct adjustment is reached. • Reassemble the frame cover. NOTE: If you placed plastic film under the gas cap, be certain to remove it before operating the snow thrower. - Page 12 warranty, operator must maintain the snow thrower as instructed in this manual. • Some adjustments will have to be made periodically to maintain your unit properly. • All adjustments in the service and adjustments sections of this manual should be checked at least once each season.
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Page 13: Section 7: Servicing Your Snow Thrower
• Carefully spin the auger around by hand to disperse the lubricant. • Reinstall the shear bolts. Check Friction Wheel Rubber Follow the instructions below to check the condition of the friction wheel rubber every 25 hours of operation. • Remove the six self-tapping screws from the frame cover underneath the snow thrower. -
Page 14: Replacing Belts
• Remove the six carriage bolts (three per side), belleville washers and hex nuts which attach slide shoes to the snow thrower on two sides. See Figure 8. • Reassemble new slide shoes with the hardware removed earlier (cupped side of belleville washer against the slide shoes). -
Page 15: Changing Friction Wheel Rubber
Brake Bracket Assembly Belt Keepers Figure 18 NOTE: The brake puck must always be firmly seated in the pulley groove when the auger control is in the disengaged position. Drive Belt • Unhook the extension spring from the belt cover plate. -
Page 16: Off-Season Storage
the right side of the hex shaft will fall and the sprocket should remain hanging lose in the chain. • Lift the friction wheel assembly out between the axle shaft and the drive shaft assemblies. • Remove the six screws from both sides of the friction wheel assembly and remove friction wheel rubber from between the friction wheel plate. -
Page 17: Section 8: Troubleshooting
SECTION 8: TROUBLESHOOTING Problem Engine fails to start. Fuel tank empty, or stale fuel. Blocked fuel line. Choke not in ON position Faulty spark plug. Safety key not in ignition switch on engine. Spark plug wire disconnected. Primer button not being used properly. Engine runs erratic. -
Page 18: Parts List
Model 31AE993J401 29 27 34 26 NOTE: For painted parts, please refer to the list of color codes below. Please add applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part... - Page 19 Model 31AE993J401 Ref. Part No. Part Description 05244A Bearing Housing 618-0281A Bracket Assembly: Auger Break 684-0090A Impeller Assembly: 16” 710-0371 Hex Lock Bolt 5/16-18 x .875” 710-0451 Carriage Bolt 5/16-18 x .750” 710-0459A Hex Screw, Special 3/8-24 x 1.5” 710-0528 Hex Screw 5/16-18 x 1.25”...
- Page 20 Model 31AE993J401 15 48 61 NOTE: For painted parts, please refer to the list of color codes below. Please add applicable color code, needed, to the part number to order a replacement part. For instance, if a part numbered 700-sextets is painted Yard- Man Green, the part number to order would be 700-sextets-0665.
- Page 21 Model 31AE993J401 Ref. Part No. Part Description 05523 Support Bracket: Pivot 618-0278 Bush Assembly 618-0279 Dogg Assembly LH 618-0280 Dogg Assembly RH 618-0282C Shift Assembly 618-0296A Wheel Bearing Assembly 684-0115 Support Bracket Assembly 684-0116 Shift Arm Assembly 684-0117 Shift Rod Assembly 684-0118 Auger Actuator Bracket Assy.
- Page 22 Model 31AE993J401 21 13 22 11 NOTE: For painted parts, please refer to the list of color codes below. Please add applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part...
- Page 23 Model 31AE993J401 Ref. Part No. Part Description 646-0012 Cable Assembly: Auger/Drive 684-0053B Chute Crank Assembly 705-5266 Chute Crank Bracket 710-0216 Hex Screw 3/8-16 x .75” 710-0347 Hex Screw3/8-16 x 1.75” 710-0458 Carriage Bolt 5/16-18 x 1.75” 710-0572 Carriage Bolt 5/16-18 x 2.5”...
- Page 24 Model 31AE993J401 6 15 16 12 Ref. 07386 684-0123A 710-0191 710-0237 710-0502A 710-0607 710-1245 712-0116 714-0118 731-2531 732-0303 736-0159 736-0217 736-0242 736-0264 737-3007 738-0215A 748-0234 754-0131 756-0240 756-0241B 784-5726 712-0324 732-0705 736-0173 629-0071 Part No. Description Washer Belt Cover Bracket Assembly Hex Screw 3/8-24 x 1.25”...
- Page 25 Model 31AE993J401 Ref. 710-0276 710-0458 710-0805 710-0896 710-3015 712-0429 712-3027 731-0846C 731-0851A 731-1313C 731-0903D 784-5680 736-0159 736-0231 736-0506 746-0902 746-0903 784-5594 784-5604 684-0102 710-0459A 710-0599 711-0653 712-0116 784-5682 714-0104 732-0145 732-0193 732-0746 735-0199A 736-0105 784-5681 736-0509 747-0877 748-0362 748-0363 784-5619A 784-5679 Part No.
- Page 26 Notes...
- Page 28 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...
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