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WALKER MANUFACTURING COMPANY
July 2006
SERVICE INSTRUCTIONS
Replace Reduction Chain
6. Adjust the chain tension. Refer to ADJUST-
MENTS of Two-Stage Snowblower Reduction
Chain Tension in this section.
7. Reinstall the reduction box cover by reversing the
removal procedures.
Two-Stage Snowblower Reduction Sprocket
A sprocket should be replaced when the teeth be-
come asymmetric (when the front of a tooth is a differ-
ent shape than the back side of the tooth).
Reduction Sprocket Wear
NOTE: Generally, a small sprocket wears faster than a
large sprocket.
1. Remove the reduction box cover and reduction
chain. Refer to REPLACING/REPAIRING of Two-
Stage Snowblower Reduction Chain in this sec-
tion.
2. Remove roll pin.
3. Loosen the set screws that fasten the sprocket to
the fan assembly by applying heat to the thread
sealant used on these screws during assembly.
4. Slide the sprocket off the fan assembly. Use a pull-
er if necessary.
5. Position the new sprocket on the fan assembly.
Install roll pin through sprocket in drive shaft.
Apply Loctite
®
Threadlocker to set screws before
tightening.
Remove and Replace Sprocket
5. Install chain and adjust the chain tension. Refer to
ADJUSTMENTS of Two-Stage Snowblower Re-
duction Chain Tension in this section.
6. Lubricate the reduction chain. Refer to LUBRICA-
TION of Two-Stage Snowblower Reduction
Chain in the Lubrication Section.
7. Reinstall the reduction box cover by reversing the
removal procedures.
Open End
of Clip
Plate
Closed End
of Clip
Master Link
Symmetric (Acceptable)
Asymmetric (Replace)
Set
Screw
Sprocket
Drive Shaft
Set Screw
Locking Collar
Roll Pin
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