Multiquip b46s90 ユーザーズマニュアル

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 b46S90 WaLK-beHIND TROWeL • OpeRaTION aND paRTS maNUaL — Rev. #0 (06/13/13) — page 41
troubleshooting
Troubleshooting (Walk-behind Trowel) - continued
Symptom
possible problem
Solution
Machine has a perceptible rolling motion 
while running.
Main shaft?
The main output shaft of the gearbox 
assembly should be checked for straightness. 
The main shaft must run straight and cannot 
be more than 0.003"" (0.08 mm) out of round 
at the spider attachment point.
Yoke?
Check to make sure that both fi ngers of the 
yoke press evenly on the wear cap. Replace 
yoke as necessary.
Blade Pitch?
Check to ensure that each blade is adjusted 
to have the same pitch as all other blades. 
Adjust per maintenance section in manual.
Clutch slipping or sluggish response to 
engine speed change.
Worn V-belts?
Replace V-belt.
Hand clutch out of adjustment?
Adjust per instructions in maintenance 
section of this manual.
Worn or defective hand clutch parts?
Replace parts as necessary.
Worn bearings in gearbox?
Rotate input shaft by hand. If shaft rotates 
with diffi culty, check the input and output 
shaft bearings. Replace as necessary.
Worn or broken gears in gearbox?
Verify that the gearbox shaft rotates when 
the input shaft is rotated. Replace both the 
worm and worm gear as a set.
Trowel blades do not rotate.
Defective clutch?
Replace clutch.
Broken V-belt?
Replace V-belt.
Defective ON/OFF switch?
Check and replace ON/OFF switch if 
necessary.
Defective centrifugal ON/OFF switch?
Check and replace centrifugal ON/OFF 
switch if necessary.