Mercury 40 Service Manual

LUBRICATION
90-828631R3 MARCH 1999 Page 4C-3
2. Disassemble Oil Pump.
a
b
c
d
e
a-Cover Seal
b-Outer Rotor
c-Inner Rotor
d-Shaft
e-Cross Pin
Cleaning and Inspection
Oil Pump
1. Check oil pump components for pitting, scratches, and for the following measurements.
Replace oil pump if worn or out of specification.
2. Using a feeler gauge, measure the following oil pump clearances:
a. Between outer rotor and pump housing (a).
b. Between the inner rotor and outer rotor (b).
c. Between the outer rotor and pump housing (c).
55803
a
b
c
Oil Pump Clearances
a 0.001 - 0.006 in. (0.03 - 0.15 mm)
b 0.005 in. (0.12 mm)
c 0.001 - 0.003 in. (0.03 - 0.08 mm)

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