MTD 643, 663 manual Off-Season Storage

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Hex Nut /

Bell Washer

Figure 20

Remove the four screws from the friction wheel assembly. Remove the friction wheel rubber from between the friction wheel plates. See Figure 21.

Reassemble the new friction wheel rubber to the friction wheel plates and hub, tightening the six screws in rotation and with equal force.

Position the friction wheel assembly up onto the pin of the shift rod assembly, and slide the hex shaft through the friction wheel assembly. Reassemble in reverse order.

Screws

Friction Wheel Rubber

Hub

Friction Wheel

Plates

Figure 21

Off-Season Storage

WARNING: Never store the machine or fuel container indoors where there is an open flame, spark, or pilot light such as on water heater, furnace, clothes dryer, or other gas appliance.

WARNING: Drain fuel into an approved container outdoors, away from an open flame. Allow engine to cool. Extinguish cigarettes, cigars, pipes, and other sources of ignition prior to draining fuel. Fuel left in engine for extended periods deteriorates and will cause starting problems.

If unit is to be stored over 30 days, prepare for storage as follows:

Remove gasoline from carburetor and fuel tank to prevent gum deposits from forming on these parts and causing possible malfunction of engine.

Run engine until fuel tank is empty and engine stops due to lack of fuel.

Drain carburetor by pressing upward on bowl drain, located below the carburetor cover.

NOTE: Fuel stabilizer is an acceptable alternative in minimizing the formation of fuel gum deposits during storage. Do not drain carburetor if using fuel stabilizer.

Wipe equipment with an oiled rag to prevent rust.

Remove spark plug and pour one ounce of engine oil through spark plug hole into cylinder. Cover spark plug hole with rag. Crank engine several times to distribute oil. Replace spark plug.

Follow the lubrication recommendations found in the Maintenance Section.

Always store the snow thrower in a clean, dry area.

NOTE: When storing any type of power equipment in an unventilated or metal storage shed, care should be taken to rust proof the equipment. Using a light oil or silicone, coat the equipment, especially any chains, springs, bearings and cables.

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Contents OPERATOR’S Manual Table of Contents Training Important Safe Operation PracticesMaintenance and Storage Loose Parts AssemblyAssembling Your Snow Thrower UnpackingKnow Your Snow Thrower Operating Your Snow Thrower Recoil Starter To Stop EngineTo Engage Drive To Engage AugersChute Clean-Out Tool Drift Cutters If EquippedOperating Tips Traction Control and Shift Lever Making AdjustmentsSkid Shoes Shift Rod AdjustmentChute Assembly Auger ControlLubrication Maintaining Your Snow ThrowerAugers Belt Removal And ReplacementServicing Your Snow Thrower EngineDrive 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