Yamaha Fazer, Service Manual

Page: 98 / 213

ENG
PISTON PIN INSPECTION
1. Inspect :
• Piston Pin
Blue discoloration/grooves Ÿ Replace and
inspect the lubrication system
2. Measure :
• Piston Pin-to-Piston clearance
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Measurement steps.
• Measure the Piston Pin outside diameter ç
using a micrometer. If out of specification, re-
place the Piston Pin.
• Measure the Piston Pin hole inside diameter
è using a Internal Micrometer
• Calculate the Piston Pin -to-Piston clearance
using the following formula :
• Out of specification Ÿ replace the Piston
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ENGINE INSPECTION AND REPAIR
4-24
Piston Pin-to-Piston clearance =
Bore size (Piston Pin) è – Outside diam-
eter (Piston Pin) ç
Outside diameter (Piston Pin):
14.995 ~ 15.000 mm
<Limit:> : 14.975 mm
Clearance ( Piston Pin to Piston ) :
0.009 ~ 0.013 mm
ç