Mercury 40 Service Manual

CYLINDER BLOCK/CRANKCASE
Page 4B-20 90-828631R3 MARCH 1999
Piston Pin
1. Measure piston pin diameter. Replace piston pin if out of specification.
55839
Piston Pin Diameter
0.6285 - 0.6287 in. (15.965 - 15.970 mm)
1. Place the piston pin into the connecting rod and check for free play. There should be no
noticeable free play.
55840
2. Place the piston pin into the piston and check for free play. There should be no notice-
able free play.
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Mercury 40 Specifications

General

Horsepower	40 hp
Starting System	Electric
Steering	Remote
Fuel Induction System	EFI (Electronic Fuel Injection)
Shaft Length	20"
Full Throttle RPM Range	6000