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INSPECTION AND REPAIR
NB243013
PRIMARY DRIVE
1.Inspect:
Primary driven gear teeth 1
Clutch boss 2
Wear/damage → Replace.
Excessive noise during operation →
Replace.
NB243014
CLUTCH
1.Inspect:
Friction plate
Damage/wear → Replace friction plates as
a set.
2.Measure:
Friction plate thickness
Out of specification → Replace friction
plates as a set.
Measure at all four points.
Type "A"
(7 pcs.)
3.Inspect:
Clutch plate
Damage → Replace clutch plates as a set.
4.Measure:
Clutch plate warpage
Out of specification → Replace clutch
plates as a set.
Use a surface plate and feeler gauge 1.
Warp limit:
Less than 0.05 mm (0.002 in)
5.Inspect:
Clutch spring
Damage → Replace as a set.
6.Measure:
Clutch spring free length a
Out of specification → Replace springs as
a set.
Free length (clutch spring):
42.8 mm (1.685 in)
<Limit>: 40.8 mm (1.606 in)
4 - 30
ENG
Wear
Thickness
2.90 ~ 3.10 mm
2.7 mm
(0.114 ~ 0.122 in)
(0.106 in)
limit
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