Checking The Crankshaft - Yamaha MZ360 Service Manual

PISTON, CAMSHAFT, CRANKCASE, AND CRANKSHAFT
a
Top ring
2nd ring
Oil ring

CHECKING THE CRANKSHAFT

1.
Check:
• Crankshaft sprocket "1"
1
Damage/wear  Replace the crankshaft.
2.
Measure:
• Crankshaft runout limit
Out of specification  Replace.
Use a dial gauge.
Dial gauge:
Dial indicator gauge:
Runout limit:
3.
Measure:
• Crank pin outside diameter "a"
Out of specification  Replace.
Use a micrometer.
Crank pin outside diameter:
Limit:
3-55
End gap (installed):
0.20–0.35 mm (0.0079–0.0138 in)
Limit:
0.60 mm (0.0236 in)
End gap (installed):
0.30–0.45 mm (0.0118–0.0177 in)
Limit:
0.80 mm (0.0315 in)
End gap (installed):
0.20–0.70 mm (0.0079–0.0276 in)
90890-03097
YU-A8428
0.02 mm (0.0008 in)
35.969–35.985 mm (1.4161–1.4167 in)
35.9 mm (1.4134 in)
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