Mercury 5 SERIES User Manual

CYLINDER BLOCK AND CRANKCASE
90-857138R1 MAY 2000 Page 4B–23
Measuring Outer Diameter of Piston Pin
Standard Value Out of the Limit
0.6299 in. (16 mm) If 0.6287 in. (15.97 mm) or less requires
replacement
Measuring Diameter of the Piston Pin Hole
Standard Value Out of the Limit
0.6300 in. (16.002 mm) Depends on clearance between piston pin and
hole.
Clearance Between Piston Pin and Piston Pin Hole
Standard Value Out of the Limit
0.0001 - 0.0005 in. (0.002 – 0.012 mm) If 0.00157 in. (0.04 mm) or more requires
replacement
1. Subtract the piston pin diameter from the piston pin hole diameter.
Measuring Piston Ring Side Clearance
Standard Value Out of the Limit
Top 0.0015 - 0.003 in. (0.04 – 0.08 mm) If 0.0039 in. (0.10 mm) or more requires
replacement
Second 0.0012 - 0.003 in. (0.03 – 0.07 mm) If 0.0035 in. (0.09 mm) or more requires
replacement
Oil 0.0004 - 0.007 in. (0.01 – 0.18 mm) If 0.0082 in. (0.21 mm) or more requires
replacement
1. Measure between piston ring and ring groove.

Mercury 5 SERIES Specifications

General

Horsepower	5 hp
Cylinders	1
Starting	Manual
Full Throttle RPM Range	5000-6000
Fuel Induction System	Carburetor
Shaft Length	15"
Recommended Fuel	87 octane