Traction Drive Clutch Adjustment; Check Belt Finger Clearance; Check Attachment Brake - Ariens Sno-Thro 920001- ST624E Owner's/Operator's Manual

2
3
7
5
1. Engine Sheave
2. Traction Drive Belt
3. Traction Belt Idler
4. Attachment Idler Nut
Figure 28
Check Attachment Brake (Figure 29)
1. With the clutch lever disengaged, brake pad must
contact attachment belt. With clutch lever
engaged, brake pad must be more than 1/16 in.
(1.6 mm) from belt. If there is more than 1/16 in.
(1.6 mm) gap, go to Check Belt Finger Clearance
(Figure 30) on page 21. If there is less than 1/16
in. (1.6 mm) gap, go to Step 2.
Minimum of 1/16 in. (1.6 mm)
2
1. Brake Arm and Pad
2. Attachment Pulley
Figure 29
2. If there is less than 1/16 in. (1.6 mm) gap
between brake pad and belt, follow these steps:
a. To increase brake pad gap, loosen idler
adjustment nut, and move idler away from
belt. Position idler to achieve a 1/16 in. (1.6
mm) minimum brake pad gap and a 1/2 – 7/8
in. (12.7 – 22.2 mm) gap between the plastic
roller and the frame.
6
1
4
5. Attachment Belt Idler
6. Belt Finger
7. Traction Belt Idler Nut
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b. Check the clutch cable spring extension and
adjust as necessary to achieve a 1/2 – 9/16
in. (12.7 – 14.3 mm) spring extension.
c. If the cable needed adjustment, recheck gaps
described in step 1. Repeat steps as
necessary until brake clearance, roller gap
and spring extension are within specified
ranges.
IMPORTANT: If adjustments cannot be brought into
specified ranges see your Dealer for repairs.
Check Belt Finger Clearance (Figure 30)
1. With clutch lever engaged, the belt finger located
opposite the belt idler must be less than 1/8 in. (3
mm) from belt, but not touching the belt.
To adjust belt finger, loosen the bolts and move
the finger to the proper position. Tighten the bolts
and recheck the belt finger clearance.
Check belt finger clearance here. With the
attachment clutch engaged, there should be
less than 1/8 in. (3 mm) clearance between the
belt and the belt finger. The belt finger should
not touch the belt.
2. Replace the belt cover.

TRACTION DRIVE CLUTCH ADJUSTMENT

If drive slips, adjust traction clutch to compensate for
friction disc wear.
To test traction clutch (Figure 31):
1. Put unit in first forward speed.
2. Without engine running, push unit forward while
slowly moving the traction drive clutch lever
toward the handlebar.
3. Measure distance between lever and handlebar
when the wheels begin to brake. If distance is not
7-1/2 – 8 in. (19.0 – 20.3 cm), adjust the traction
clutch.
GB - 21
Figure 30
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