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2. Loosen nut on idler hex-shaft and adjust
in slot as necessary. Torque the nut to 70-
146 lbf-in (7.9-16.5 N•m).
ATTACHMENT DRIVE BELT
REPLACEMENT
Remove old attachment drive belt:
1. Follow the instructions for removing the
brush attachment from the unit frame
under Service Position.
Install new attachment drive belt:
1. Place new attachment belt onto
attachment pulley.
2. Tip attachment and frame back together
and secure with cap screws.
3. Place belt onto engine sheave.
4. Make sure engine sheave and
attachment pulley align. If alignment is
necessary, loosen attachment pulley set
screws, reposition pulley and retighten
set screws.
5. Reposition and secure belt fingers.
IMPORTANT: Make sure belt fingers are 1/16
to 1/8 in (1.6-3 mm) from belt when
attachment clutch is engaged.
6. Check clutch adjustment (see
Attachment Clutch Adjustment).
7. Replace belt cover.
TRACTION DRIVE BELT
REPLACEMENT
1. Follow the instructions for removing the
brush attachment from the unit frame
under Service Position.
2. Pull idler away from traction drive belt
and remove belt from idler pulley, engine
sheave and driven pulley (it may be
necessary to turn engine pulley using
recoil handle). See Figure 11.
NOTE: To gain clearance, engage traction
clutch and, if necessary, pull back attachment
idler arm clevis pin.
3. Install new traction drive belt onto drive
pulley and engine sheaves.
4. Replace attachment drive belt (see
Attachment Drive Belt Replacement).
5. Check and adjust clutches (see
Attachment Clutch Adjustment and
Traction Drive Clutch Adjustment).
6. Replace belt cover.
2
3
1
5
1.Traction Belt Idler
2.Cap Screw
3.Belt Finger
4.Traction Drive
Belt
5.Attachment Belt
Idler
FRICTION DISC REPLACEMENT
1. Follow the instructions for removing the
brush attachment from the unit frame
under Service Position.
2. Remove bottom cover by removing four
cap screws.
3. Place speed selector in first (1) position
and depress traction clutch lever to hold
friction disc and hub in position.
4. Remove cap screws from hub
(Figure 12).
5. Release traction clutch lever, shift to third
(3) position, and remove friction disc.
6. Secure new friction disc on hub with five
cap screws and torque cap screws to
8-10 lbf-ft (10,6-13,3 N•m).
7. Replace bottom cover.
8. Adjust traction drive clutch (see Traction
Drive Clutch Adjustment).
GB - 19
6
4
9
8
6.Attachment Drive
Belt
7.Engine Sheave
8.Attachment Pulley
9.Attachment Idler
Adjustment Nut
Figure 11
7
OS3001
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