CRANKSHAFT / TRANSMISSION
CRANKSHAFT / TRANSMISSION
3-2-25
CAUTION
The Crankshaft and Connecting Rod are Assembled at
the factory , so the Crankshaft must be replaced as a set.
Connecting Rod Big End Side Clearance
Connecting Rod Big End Side Clearance
◆
Measure the side clearance of the connecting rod
big end.
◆
Insert a thickness gauge
【
B
】
between the big end
and either crank determine clearance.
Connecting Rod Big End Side Clearance
Standard: 0.13 ~ 0.48 mm
Service Limit: 0.7 mm
If the clearance exceeds the service limit, replace the
Crankshaft.
Crankshaft Runout
◆
Measure the crankshaft runout.
If the measurement exceeds the service limit, replace the
Crankshaft.
Standard: TIR 0.04 mm (0.0016 in.) or less
Service Limit: TIR 0.10 mm (0.0039 in.)
Crankshaft Main Bearing/Journal Wear
Crankshaft Main Bearing/Journal Wear
◆
Measure the diameter
【
A
】
of the crankshaft main
journal.
Crankshaft Main Journal Diameter
Standard:
40.995
~ 41.005 mm
Service Limit:
40.97
mm
If any journal has worn past the service limit, replace the
crankshaft with a new one.
◆
Measure the main bearing bore diameter
【
B
】
in the
crankcase halves.
Crankcase Main Bearing Bore Diameter
Standard:
41.040
~ 41.050 mm
Service Limit: 41.08 mm
If there is any signs of seizure, damage, or excessive
wear, replace the crankcase halves as a set.
Crankshaft
A
A
B
B
B
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