Service

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 31.

7.Return snowthrower to upright operating position.

8.Connect spark plug wire and fill fuel tank.

Keeper link

(Must install towards wheel side

with open end trailing.)

Master link

Direction of travel

Figure 31. Roller Chain Master Link

SHEAR PIN REPLACEMENT

 

WARNING

 

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.

B

Under most circumstances, if the auger strikes an object

 

which could cause damage to the unit, the shear pin will

A

break. (This protects the gear box and other parts from

 

damage.)

 

The shear pins are located on the auger shaft as shown

A

in Figure 32. To replace the shear pins, tap out broken

 

pin with a pin punch, and install a new shear pin and cot-

B

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.)

 

Figure 32. Shear Pin Replacement

A. Shear Pin

B. Cotter Pin

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Snapper 555M, 555M, 15225, E15225, 18245E, E18245, 860E, 860M manual Roller Chain Replacement, Shear PIN Replacement

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