Gravely Power Brush 36 Owner's/Operator's Manual page 22

Check Attachment Idler Arm
Roller Clearance
(Figure 13)
NOTE: It will be difficult to check the
measurement inside the frame. Use a 1/2 in.
(12.7 mm) minimum spacer as a gauge to
check the clearance between the roller and
the frame.
1. Remove bottom cover.
2. With the attachment clutch lever
engaged, check the clearance between
the frame and plastic roller on the lower
end of the attachment idler arm
(Figure 13).
• If roller is 1/2 – 7/8 in. (12.7 –
22.2 mm) from frame, no further
adjustment is required.
• If roller is less than 1/2 in. (12.7 mm)
from frame, loosen idler adjustment
nut and move idler closer to the belt.
Tighten adjustment nut and recheck
the roller clearance.
• If roller is more than 7/8 in. (22.2 mm)
from frame, loosen idler adjustment
nut and move idler away from the belt.
Tighten adjustment nut and recheck
roller clearance.
Some components removed for
clarity of illustration.
1
Roller should be 1/2 – 7/8 in. (13 – 22 mm)
from the frame when the attachment clutch
is ENGAGED.
1. Frame
2. Idler Adjustment Nut
3. Attachment Idler Arm
4. Roller
Check Belt Finger Clearance
1. With attachment clutch lever engaged,
the belt finger located opposite the belt
idler must be less than 1/8 in. (3 mm)
from belts, but not touching the belts
(Figure 14).
2. Remove the belt cover.
3. To adjust belt finger, loosen the bolts and
move the finger to the proper position.
Tighten the bolts and recheck the belt
finger clearance.
4. Replace the belt cover.
GB - 22
2
3
4
Figure 13