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WALKER MANUFACTURING COMPANY
July 2006
SERVICE INSTRUCTIONS
Loosen Chain Idler Nut
2. Position the chain idler so the chain has 1/4 to 1/2
in. (6 to 13 mm) of slack.
3. Retighten the chain idler nut.
4. Recheck the drive chain tension.
Proper Drive Chain Tension
Two-Stage Snowblower Skid Shoes
Adjust the skid shoes to allow the required clearance
under the blade. On level, paved surfaces, adjust the
skid shoes to allow 3/16 to 1/4 in. (5 to 6 mm) clearance
between the cutting edge and the surface. On uneven
or gravel surfaces, allow 1/2 to 5/8 in. (13 to 16 mm)
clearance, depending on the size of the gravel. Refer to
Skid Shoe Height Adjustment illustration.
Skid Shoe Height Adjustment
Two-Stage Snowblower Reduction Chain
Tension
Adjust the tension on the reduction chain as follows:
1. Loosen the four (4) bolts securing the lower
sprocket support box to the reduction box housing.
2. Position the lower sprocket support box according
to the amount of chain tension required. The chain
should have about 1/4 to 1/2 in. (6 to 13 mm) of
slack.
3. To increase the chain tension, position the sup-
port box lower. To decrease the chain tension,
position the support box higher.
4. Retighten the four (4) bolts securing the support
box.
Reduction Chain Tension Adjustment
Chain Idler
Nut
Chain Idler
Drive
Chain
Chain Idler Bolt
Chain
Guard
1/4 to 1/2 in. (6 to 13 mm)
Slack at Midspan
Chain Idler
3/16 to 1/4 in. (5 to 6 mm)
Clearance for Level, Paved Surfaces
1/2 to 5/8 in. (13 to 16 mm)
Clearance for Uneven or Gravel Surfaces
Decrease
Chain Tension
Increase
Chain Tension
Support
Box Bolts
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