ROLLER CHAIN REPLACEMENT
NOTE: This procedure does not apply to models that use an “endless” chain.
1.Remove gas from fuel tank and run engine until it stops running from lack of fuel.
2.Disconnect spark plug wire and fasten it away from the spark plug.
3.Tilt the snowthrower forward and carefully rest unit on the auger end.
4.Rotate the wheel to locate the roller chain master link.
5.Remove the keeper link, master link and chain.
6.Install new chain and master link as shown in Figure 30.
7.Return snowthrower to upright operating position.
8.Connect spark plug wire and fill fuel tank.
Service
Keeper link
(Must install towards wheel side
with open end trailing.)
Master link 
Direction of travel
Figure 30. Roller Chain Master Link
SHEAR PIN REPLACEMENT
Under most circumstances, if the auger strikes an object which could cause damage to the unit, the shear pin will break. (This protects the gear box and other parts from damage.)
The shear pins are located on the auger shaft as shown in Figure 31. To replace the shear pins, tap out broken pin with a pin punch, and install a new shear pin and cot- ter pin. Spread the legs of the new cotter pin fully. Do
NOT replace shear pins with anything other than the correct grade replacement shear pin. See the REPLACEMENT PARTS section at the back of this man- ual for the correct part numbers. (Use of bolts, screws or a harder shear pin will lead to damaged equipment.)
WARNING
Shear |
Pins |
Figure 31. Shear Pin Replacement
Do not go near the discharge chute or auger when the engine is running. Do not run the engine with any cover or guard removed.
AUGER SHAFT BEARING
REPLACEMENT
If auger shaft bearings need replacement, proceed as follows:
1.Pry off the
2.Remove the washers, then pull the bearing out of the housing and off the shaft.
3.Apply a coating of grease to inside diameter of bear- ings.
4.Install new bearing by aligning bearing flat sides with flat sides in housing.
5.Install washers. Install a new
Washer(s) |
Bearing |
Figure 32. Auger Bearings
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