MB MCD-WB Operator's Manual page 20

Walk behind power broom
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Troubleshooting
PROBLEM
Broom does not stop when broom
lever is released
Power broom does not stop when
drive lever is released
Power broom veers to one side
Excessive vibration
Drive fails to move power broom at
slow speeds
Speed selector difficult to move or
frozen in place
POSSIBLE CAUSE
1. Free-Hand™ Control is ACTIVE.
2. Broom clutch rod too tight or bent.
3. Broom drive belt out of adjustment. 3. Adjust broom belt.
4. Broom belt guide out of adjustment. 4. Adjust broom belt guide.
1. Traction drive clutch rod bent or too
tight.
1. Traction drive clutch rod loose.
2. Drive belt loose, broken, or
stretched.
3. Drive roller chain damaged.
4. Traction Lock Pins in Free-
Wheeling position (OUTER hole).
5. Friction Disc worn.
1. Tires pressure not equal.
2. One wheel is set in Free-Wheeling
mode. (Traction Lock Pin is in the
OUTER hole).
1. Loose parts or damaged broom
assembly.
1. Traction Drive out of adjustment.
1. Hex shaft needs lubrication.
18
REMEDY
1. Release BOTH broom Engage
Control AND Free-Hand™ Control
to stop broom.
2. Loosen or straighten clutch rod.
1. Loosen rod to remove slack or
replace. See adjustment procedure.
1. Tighten to remove slack. See
adjustment procedure.
2. Replace drive belt.
3. Replace chain.
4. Change Traction Lock Pins to
INNER hole to engage traction
drive.
5. Replace Disc (see your dealer).
1. Check tire pressure.
2. Make certain the left Traction Lock
Pin is in the INNER holes (to
engage traction drive).
1. STOP engine and REMOVE the
key. DISCONNECT the spark plug
wire. Tighten all hardware. Replace
broom assembly if necessary. If
vibration continues, see your dealer.
1. Readjust drive, or shift Speed
Selector setting up one speed
faster.
1. Lubricate hex shaft with 5W-50 syn-
thetic motor oil (see Maintenance).

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