Ariens 932031 - ST524 Owner's/Operator's Manual page 23

Attachment Clutch/Impeller Brake
WARNING
ROTATING PARTS can cut off body
parts. Keep hands and feet away. Loose
clothing, long hair or scarves can get
caught in rotating parts and cause death
OL0980
or serious injury.
It is necessary to perform the adjustments with the
belt guard removed and extreme care is to be taken to
prevent injury. Stand well clear of the open belt drive
while engine is running.
WARNING
IMPROPER ADJUSTMENT could result in death or
serious injury.
AUGER / IMPELLER MUST STOP within 5 seconds
when Attachment Clutch / Impeller Brake lever is
released or unit damage or serious injury may result.
IMPELLER BRAKE MUST DISENGAGE when clutch
is engaged. Brake must be at least 1/16" (1,6 mm) to
1/8" (3,2 mm) minimum from belt when disengaged.
BELT FINGERS MUST BE between 1/16 to 1/8" from
belt with attachment clutch engaged or belt grabbing
may occur causing impeller to rotate while attachment
clutch is disengaged.
There MUST BE a slight amount of slack in cable or
impeller may rotate while attachment clutch is
disengaged.
To check impeller brake:
1. Tip unit forward onto auger/impeller housing.
2. Remove bottom cover by removing four cap screws.
3. Measure distance between impeller brake shoe pad
and belt with attachment clutch engaged (Figure 13).
Impeller brake shoe should be 1/16" (1,6 mm)
minimum from belt. When attachment clutch is
disengaged, brake must contact belt.
To Properly Adjust Attachment Clutch/Impeller Brake:
1. Without the engine running, remove the belt cover.
Attachment brake is seated against the attachment
drive belt when the attachment clutch lever is in the
released (full up) position. Adjust the control cable
mounting nuts to snug up the control cable, then
back off on the top nut 2 turns to provide cable slack
for brake wear. Tighten bottom nut.
Rev. 8/97
2. Start engine and run at full throttle. Slowly depress
the attachment clutch lever until the auger shaft
begins to rotate, observing the bolt at the end of the
auger shaft. The measurement between the end of
the attachment clutch lever and the handle grip at
this point should be between 3" and 3-1/4" as shown
in figure 14. If this dimension is not within this range
shut off the engine and adjust the attachment drive
idler pulley as required. 1/16" adjustment of the
attachment drive idler pulley will result in an
approximate 1/4" change in the attachment clutch
control lever engagement position. Moving the
attachment drive idler pulley towards the attachment
drive belt will increase the dimension between the
attachment clutch control lever and the handle grip.
4
5
1. Attachment Clutch
Lever
2. Handle Grips
3. Traction Drive Clutch
Ariens 932 Series Sno-Thro
® ®
1
2
3
1. Drive Belt
2. Brake Shoe and Pad
3. 1/16" (1,6 mm)
Figure 13
3
3 1 /4"- 3 3 /4"
1
3"- 3 1 /4"
4. Sleeve Jam Nut
5. Adjustment Sleeve
Figure 14
OS0660
2
2
OS0451
19