Ariens ST T8 Service Manual page 21

1. Bracket
2. Worm Gear
3. Adjustment Nuts
Figure 8
Attachment Clutch/Impeller Brake
WARNING: AUGER/IMPELLER MUST
STOP within 5 seconds when Attachment
Clutch/Impeller Brake lever is released or unit
damage or serious injury may result.
To adjust Attachment Clutch/Impeller Brake:
1. Remove belt cover. When clutch is disengaged
there should be a slight amount of slack in the
attachment cable to allow for brake wear.
2. Clutch cable spring should extend approximately
3/8" (9,5mm) when clutch is engaged but allow
clutch arm (at lower end) to return to its maximum
down position when clutch is disengaged. To
increase spring extension. loosen adjustment
hardware (Figure 5) and move the attachment idler
toward the belt. Approximately 1/8" (3,2 mm)
movement of the idler will increase spring
extension by 1/8" (3,2 mm).
3. To check impeller brake, tip unit forward onto
auger/impeller housing. Remove bottom cover by
removing four cap screws.
4. Measure distance between impeller brake shoe
pad and belt with attachment clutch engaged
(Figure 9). Impeller brake shoe should be 1/16"
(1.6 mm) minimum from belt. When attachment
clutch is disengaged, brake must contact belt. If
brake travel does not meet these requirements,
contact your dealer.
5. Replace bottom cover.
1. Drive Belt
2. Brake Shoe and Pad
3. 1/16" (1.6 mm) minimum
Traction Drive Clutch
Adjust traction clutch to compensate for wear of friction
wheel when slippage occurs.
To adjust traction clutch, place speed selector in First
(1) Forward and tip unit forward onto housing.
With traction clutch disengaged turn wheels while
tightening Adjustment Nut at clutch yoke until wheels
begin to drag (Figure 10). Engage and release traction
clutch to align clutch linkage. Repeat as necessary.
When wheel drag is obtained with linkage aligned, turn
nut back three turns. Wheels will then turn freely.
1. Traction Clutch Rod
2. Adjustment Nut
4 - 21
Figure 9
Figure 10
1
2
3
OS0660