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OPERATION
OM 0391SB1274-A
25
Chain Idler Adjustment (Figure below)
A - COMPRESSION SPRING:
1. Every ten operating hours check the height of
the compression spring (item 1), to have chain
idler maximal efficiency.
2. Adjust the distance from the top of the welded
bushing (item 2) to the bottom of the flat washer
(item 3) by tightening the nut (item 4), to obtain
A:
4 1/4" for 74" to 88" snowblower
3 1/4" for 92" and up snowblower
B - DRIVING CHAIN:
1. At the end of the operating season, check the
chain elongation by measuring the distances
B1 from top of the sprocket to underneath the
side plate, and B2 the gap between the
chain, as shown on figures.
2. Those distances must be of 3/4" minimum, if
not less than 3/4"; the chain is too much
stretched and may caused premature wear of
the sprockets. It needs to be changed.
74" to 88" SNOWBLOWE
R
92" & u
p
SNOWBLOWE
R
B1
A
A
B1
B2
B2