Yamaha BEARTRACKER YFM250XC, Service Manual

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ENG
INSPECTION AND REPAIR
CRANKSHAFT
1.Measure:
●
Crank width
A
Out of specification
→
Replace or repair.
●
Runout
c
Out of specification
→
Replace or repair.
●
Side clearance
D
Out of specification
→
Replace or repair.
●
Big end radial clearance
E
Out of specification
→
Replace or repair.
●
Small end free play
F
Out of specification
→
Replace or repair.
Crank width:
55.95 ~ 56.00 mm
(2.203 ~ 2.205 in)
<Runout limit>:
C
1
: 0.03 mm (0.0012 in)
C
2
: 0.06 mm (0.0024 in)
Big end side clearance:
0.35 ~ 0.65 mm (0.014 ~ 0.026 in)
Big end radial clearance:
0.010 ~ 0.025 mm
(0.0004 ~ 0.0010 in)
Small end free play:
0.8 ~ 1.0 mm (0.032 ~ 0.040 in)
< Limit>:
2.0 mm (0.08 in)
2.Inspect:
●
Crankshaft bearings 1
Abnormal noise/Turn roughly/Free play
→
Replace.
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