Ariens Sno-Thro ST520E Owner's/Operator's Manual page 25

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.
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 3/64 in. (1.3 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.
2. Replace the belt cover.
Check belt finger clearance here. With the
attachment clutch engaged, there should
be less than 3/64 in. (1.3 mm) clearance
between the belt and the belt finger. The
belt finger should not touch the belt.
Figure 30
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.
Traction Clutch Lever
To adjust traction clutch (Figure 32):
1. With the traction drive clutch lever
disengaged, loosen the jam nut on the
cable adjuster.
Turn adjustment barrel up the cable to
decrease the distance between clutch
lever and handlebar.
Turn the adjustment barrel down the
cable to increase the distance between
clutch lever and handlebar.
2. Check traction clutch lever distance and
repeat adjustment steps if necessary.
3. Tighten jam nut on traction cable
adjustment barrel.
4. With the clutch disengaged, check that
there is more than 1/32 in. (0.8 mm)
clearance between friction disc and
drive plate assembly. See Figure 33 on
page 26.
OS8067
GB - 25
7-1/2 – 8 in.
(19.0 – 20.3 cm)
Figure 31
OS2490