Grounding of Brush Holder
1.
Check the insulation of the positive brush holder.
2.
If the insulation is defective, replace.
Reference value
Checking Clutch
1.
Check to see if the clutch gear is worn or damaged.
Should not
be
conducted.
2.
Check to see if the gear locks
in
the driving direction and rotates smoothly
in
reverse.
145
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