Replacing Rim Sprocket

The rim sprocket requires the same attention and maintenance as the other parts of the saw unit. A worn rim sprocket may cause damage to the saw bar or to the saw chain. If the rim sprocket has been damaged, it can not be repaired, it can only be replaced.

Before performing any maintenance or service work, lower the attachment to the ground and shut off the engine. Turn off any master shut-offs and do not allow personnel in the cab. When replacing the rim sprocket, do as described below. Remove the saw chain,

When working on the saw chain always ensure the engine is shut off and wear safety gloves to prevent injuries. Remove the saw chain when making any adjustments or servicing the saw unit. Remove the rim sprocket. 1 Remove the Socket head cap screw (5), use a 10 mm Allen key. 2 Remove the Chain Catcher (4). 3 Remove the Rim Sprocket (3). 4 Remove the shim 5 Make sure that the spacer is not worn or damaged, replace if necessary. Install the rim sprocket. 1 Make sure that the key is not worn or damaged, replace if necessary. 2 Install the new rim sprocket. Make sure that the rim sprocket align with the saw bar, install a shim (2) if necessary. 3 Make sure that the chain catcher is not worn or damaged, replace if necessary Carefully clean the socket head cap screw (6), and apply Loc-Tite 243 on the thread. Tighten the cap screw (6), use a 10 mm Allen key. Install the saw chain. .

When working on the saw chain always ensure the engine is shut off and wear safety gloves to prevent injuries. Remove the saw chain when making any adjustments or servicing the saw unit.

Fig. 23Replacing Rim Sprocket Spacer Shim Key Rim Sprocket Chain Catcher Socket hd. cap screw, M12x80

Fig. 24Applying Loc-Tite 243