Mercury 5 SERIES User Manual

CYLINDER BLOCK AND CRANKCASE
Page 4B–24 90-857138R1 MAY 2000
Measuring Piston Ring End Gap
Standard Value Out of the Limit
Top 0.006 - 0.014 in. (0.15 – 0.35 mm) If 0.020 in. (0.5 mm) or more requires
replacement
Second 0.012 - 0.020 in. (0.30 – 0.50 mm) If 0.028 in. (0.7 mm) or more requires
replacement
Oil 0.008 - 0.016 in. (0.20 – 0.40 mm) If 0.024 in. (0.6 mm) or more requires
replacement
Push piston rings into cylinder approximately 0.8 in. (20 mm) deep. Push in the rings using
the piston.
Measuring Diameter of the Small End of Connecting Rod
Standard Value Out of the Limit
0.6303 in. (16.01 mm) If 0.6315 in. (16.04 mm) or more requires
replacement
Measuring Side Clearance of the Big End of Connecting Rod
Standard Value Out of the Limit
0.008 - 0.016 in. (0.2 – 0.4 mm) If 0.027 in. (0.7 mm) or more requires replacement

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