MTD 643, 663 manual OPERATOR’S Manual

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OPERATOR’S MANUAL

Snow Thrower

Models

643 & 663

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 361131 Cleveland, Ohio 44136-0019.

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

PRINTED IN U.S.A.

FORM NO. 769-00377.fm

 

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Contents OPERATOR’S Manual Table of Contents Training Important Safe Operation PracticesMaintenance and Storage Assembling Your Snow Thrower AssemblyUnpacking Loose PartsKnow Your Snow Thrower Operating Your Snow Thrower To Engage Drive To Stop EngineTo Engage Augers Recoil StarterDrift Cutters If Equipped Chute Clean-Out ToolOperating Tips Traction Control and Shift Lever Making AdjustmentsChute Assembly Shift Rod AdjustmentAuger Control Skid ShoesLubrication Maintaining Your Snow ThrowerServicing Your Snow Thrower Belt Removal And ReplacementEngine AugersDrive Belt Replacing Friction Wheel RubberOff-Season Storage Trouble Possible Causes Corrective Action Trouble ShootingPart Description Models 64370 73 429 731-1300B Lower Chute Models 643 Models 643 Models 643 Models 643 2615 Drive Clutch Cable Auger Clutch Models 643 Page Page MANUFACTURER’S Limited Warranty for