Ariens Sno-Thro Professional Pro 28 Operator's Manual page 21

7. Reinstall belt cover and tighten hardware.
8. Reconnect spark plug wire.
Check Attachment Idler Arm Roller
Clearance
1. Place unit in service position and remove
bottom cover.
2. Engage attachment clutch and check
the clearance between the frame and
plastic roller on the lower end of the
attachment idler arm. Roller should be
12.7 mm – 22.2 mm (1/2" – 7/8") from the
frame. See Figure 29.
Figure 29
• If roller is 12.7 mm – 22.2 mm
(1/2" – 7/8") from frame, no further
adjustment is required.
See Figure 30.
• If roller is less than 12.7 mm (1/2") from
frame, loosen idler adjustment nut and
move idler closer to belt. Tighten
adjustment nut and recheck roller
clearance.
• If roller is more than 22.2 mm (7/8")
from frame, loosen idler adjustment nut
and move idler away from belt. Tighten
adjustment nut and recheck roller
clearance.
Measure
here.
EN - 19
3
1. Idler
2. Belt
3. Pulley
Figure 30
Check Attachment Brake
With the attachment clutch disengaged,
brake pad must contact attachment belt or
pulley, whichever is closest. With attachment
clutch engaged, brake pad must be a
minimum of 1.6 mm (1/16") from belt or
pulley. See Figure 31.
Measure
here.
2
1. Brake Pad
2. Attachment Pulley
Figure 31
2
1
1