Service Manual

Single Stage Snowthrower Service Manual 5 - 5
DRIVE SYSTEMS
3. Using a 5/8” open end wrench and a 1/2” socket
wrench, remove the shoulder bolt, washers, and
nut, retaining the idler assembly to the left side
plate (Figure 67). At this point, inspect the entire
assembly. If the idler arm is misformed, replace.
Also, inspect the washers for excessive wear.
Replace if necessary.
Figure 67 0217-039
4. By removing the capscrew and locknut that retains
the idler pulley to the idler arm, the idler pulley can
be removed and the bearings can be inspected
(Figure 68). Should the bearing have unusual
side to side play or be “wallowed” (oval shaped),
replace the idler pulley and the capscrew.
Figure 68 0217-040
5. Reassemble the idler assembly and attach it to
the left side plate with shoulder bolt, washers, and
nut (Figure 69). Tighten the nut firmly.
Figure 69 0217-041
6. Attach idler spring. Refer to "Idler Spring
Replacement" on page 5 - 4. Complete step 3.
7. Attach belt. Refer to "Replacing Drive Belt" on
page 5 - 1. Complete steps 5 through 7. Replace
the upper shroud.