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Operator's Manual
Single Stage
Snow Thrower
Model 421R
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 368023 Cleveland, Ohio 44136-9722.
CUB CADET CORP. P.O. BOX 368023 CLEVELAND, OHIO 44136-9722
PRINTED IN U.S.A.
FORM NO. 770-10005B.fm
(6/2000)
ECO No. 1405

Summary of Contents

  • 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 368023 Cleveland, Ohio 44136-9722. CUB CADET CORP. P.O. BOX 368023 CLEVELAND, OHIO 44136-9722 PRINTED IN U.S.A.

  • Page 2: Table Of Contents

    If you have difficulty assembling this product or have any questions regarding the controls, operation or maintenance of this unit, please call the Cub Cadet Customer Dealer Referral Line at 1-(800)-528- 1009. Please have your unit’s model number and serial number ready when you call. See previous section to locate this information.

  • Page 3: Important Safe Operation Practices

    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 this machine. Failure to comply with these instructions may result in personal injury. When you see this symbol—heed its warning.

  • Page 4

    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. Exercise extreme caution when operating on or crossing gravel surfaces. Stay alert for hidden hazards or traffic. Exercise caution when changing direction and while operating on slopes.

  • Page 5: Assembling Your Snow Thrower

    SECTION 2: ASSEMBLING YOUR SNOW THROWER Unpacking From Carton • Cut along corners of the carton and lay it down flat. See Figure 1. Remove packing material. • Remove any loose parts included with unit (i.e., operator’s manual, etc.). • Roll unit out of carton.

  • Page 6

    • Lift the control handle up, and hook the “Z” end of the control cable into the bottom hole in the control handle, from the outside to the inside . If necessary, pull up on the end of the cable with a pair of pliers to obtain slack in order to hook it into the control handle.

  • Page 7: Know Your Snow Thrower

    SECTION 3: KNOW YOUR SNOW THROWER Be familiar with all the controls and their proper operation. Know how to stop the machine and disengage them quickly. • Compare Figure 9 with the controls on your snow thrower before starting the machine or trying to operate it. Auger Control Handle Chute Crank...

  • Page 8: Operating Your Snow Thrower

    SECTION 4: OPERATING YOUR SNOW THROWER Before Starting WARNING: Read, understand, and follow all instructions and warnings on the machine and in this manual before operating. • The spark plug wire was disconnected for safety purposes during assembly. Attach spark plug wire to spark plug before starting.

  • Page 9: Making Adjustments

    SECTION 5: MAKING ADJUSTMENTS WARNING: NEVER attempt to make any adjustments while the engine is running, except where specified in the operator’s manual. Shave Plate • To check the adjustment of the shave plate, place the unit on a level surface. See Figure 12. The wheels, shave plate and augers should all contact level surface.

  • Page 10: Maintaining Your Snow Thrower

    SECTION 6: MAINTAINING YOUR SNOW THROWER WARNING: Before servicing, repairing, or inspecting, disengage all clutch levers and stop engine. Wait until all moving parts have come to a complete stop. Disconnect spark plug wire and ground it against the engine to prevent unintended starting.

  • Page 11: Off-season Storage

    Lubrication • Lubricate pivot points on the control handle and the extension spring at the end of the clutch cable with a light oil once every season and before storage of the snow thrower at the end of the season. SECTION 7: OFF-SEASON STORAGE WARNING: Never store engine with fuel in...

  • Page 12: Troubleshooting

    SECTION 8: TROUBLESHOOTING GUIDE Problem Engine fails to start Fuel tank empty, or stale fuel Blocked fuel line Key not in ON position Spark plug wire disconnected Faulty spark plug Gasoline and oil not mixed correctly Engine runs erratic Unit running on choke Fuel line blocked, or stale fuel Water or dirt in fuel system Carburetor out of adjustment...

  • Page 13: Parts List

    SECTION 9: PARTS LIST FOR MODEL 421R Ref. No. Part No. Description 710-0487 Carriage Screw 710-1270 Oval C-Sunk Machine Screw 712-0324 Hex Lock Nut 720-0284 Wing Nut 720-0295 Foam Grip: Handle 725-0157 Cable Tie 736-0451 Saddle Washer 746-0883 Cable Housing w/o Throttle...

  • Page 14

    SECTION 10: Model 421R 46 37 31 32 23 12...

  • Page 15

    Model 421R Ref. No. Part No. Part Description 710-0167 Carriage Bolt 710-0276 Carriage Bolt 710-0323 Pan Head Screw 710-0451 Carriage Bolt 710-0642 Hex Washer Screw 710-1005 Hex Washer Screw 710-0773 Hex Washer Screw 710-0896 Hex Washer Screw 710-3015 Hex Cap Screw...

  • Page 16

    Model 421R...

  • Page 17

    Model 421R Ref. No. Part No. Part Description 684-0054A Dash Assembly 684-0126 Chute Crank Assembly 710-1003 Special Screw: 310-16 x 0.375” 710-1090 Hex Flange Screw 5/16-18 x 1.25” 710-1268 Special screw 710-1652 Self-Tapping Screw 1/4-20 x .625” 712-3010 Hex Nut 5/16-18...

  • Page 18

    Model 421R 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 Cub Yellow, the part number to order would be 700-xxxx-0716.

  • Page 19

    Model 421R...

  • Page 20: Cleveland, Ohio, Cub Cadet Corp

    There is no other express warranty. Contact your authorized Cub Cadet servicing dealer who sold you your Cub Cadet equipment. If this dealer is not available, see the Consumer Yellow Pages under “lawn mowers” for the name of a dealer near you.

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