Mercury 5 SERIES Service Manual page 155

Measuring Outer Diameter of Piston Pin
Standard Value
0.6299 in. (16 mm)
Measuring Diameter of the Piston Pin Hole
Standard Value
0.6300 in. (16.002 mm)
Clearance Between Piston Pin and Piston Pin Hole
Standard Value
0.0001 - 0.0005 in. (0.002 – 0.012 mm)
1. Subtract the piston pin diameter from the piston pin hole diameter.
Measuring Piston Ring Side Clearance
Top 0.0015 - 0.003 in. (0.04 – 0.08 mm)
Second 0.0012 - 0.003 in. (0.03 – 0.07 mm)
Oil 0.0004 - 0.007 in. (0.01 – 0.18 mm)
1. Measure between piston ring and ring groove.
90-857138R1 MAY 2000
Standard Value
CYLINDER BLOCK AND CRANKCASE
Out of the Limit
If 0.6287 in. (15.97 mm) or less requires
replacement
Out of the Limit
Depends on clearance between piston pin and
hole.
Out of the Limit
If 0.00157 in. (0.04 mm) or more requires
replacement
Out of the Limit
If 0.0039 in. (0.10 mm) or more requires
replacement
If 0.0035 in. (0.09 mm) or more requires
replacement
If 0.0082 in. (0.21 mm) or more requires
replacement
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