Honda HHT35S Owner's Manual page 54

TAKING CARE OF UNEXPECTED PROBLEMS
Blade or Cutting-line Head Won't Turn
Possible Cause
Worn or broken clutch, broken drive cable, worn or
broken gear case parts.
Excessive Vibration
Possible Cause
Loose cutting-line head or blade nut.
Cutting-line is not wound properly or has unequal
line lengths.
Damaged blade.
52
Correction
Replace or repair faulty components as
needed.
Correction
Tighten the cutting-line head or blade nut
securely.
Rewind the cutting-line and cut to equal
lengths.
Replace the blade.