If the engine R/MIN doesn’t coincide with the specified r/min range, then disassemble the clutch.
Clutch shoe---inspect the shoes visually for chips, cracking, uneven wear and burning, and check the
thickness of the shoes with vernier calipers. If the thickness is less than the following service limit, replace them
as a set.
Clutch springs -----visually inspect the clutch springs for strectched coils or broken coils.
Service limit:：2.0mm(0.08in)
CAUTION ： clutch shoes or springs must
bechanged as a set and never individually.
Clutch wheel—inspect visually the condition of
the inner clutch wheel surface for scrolling, cracks, or
uneven wear. Measure inside diameter of the clutch wheel
with inside calipers. Measure the diameter at several
points to check for an out-of-round condition as well as
wear.
Service limit:110.50mm(4.350in)
DRIVE BELT
Remove the drive belt and check for cracks, wear and
separation. Measure the drive belt width with a vernier calipers.
Replace it if the belt width is less than the service limit or and defect
has been found.
Service limit：16.0mm(0.630in)
CAUTION；Always keep the drive belt away from any
geasy matter.
Drive face
Inspect the belt contact surface of the dirve faces for wear,
scratches or any abnormality . if there is something unusual,
replace the drive face with a new one.
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