Mercury 40 Service Manual

SPECIFICATIONS
Page 1A-4 90-828631R3 MARCH 1999
CRANKSHAFT
Main Bearing Clearance
Crankshaft Run-out
0.0005 - 0.0017 in. (0.012 - 0.044 mm)
0.0012 in. (0.03 mm)
CAMSHAFT
Camshaft Dimensions
Intake “A”
Exhaust “A”
Intake “B”
Exhaust “B”
Run-out Limit
A
B
1.216 - 1.220 in. (30.89 - 30.99 mm)
1.213 - 1.217 in. (30.82 - 30.92 mm)
1.022 - 1.025 in. (25.95 - 26.05 mm)
1.022 - 1.025 in. (25.95 - 26.05 mm)
0.0039 in. (0.1 mm)
VALVE SPRING
Free Length “a”
Tilt Limit “b”
Compressed Pressure (Installed)
Intake
Exhaust
Tilt Limit (Intake & Exhaust)
Dir. of Winding (Intake & Exhaust)
a
b
1.491-1.569 in. (37.85-39.85 mm)
Less than 0.060 in. (1.7 mm)
19.8 - 22.0 lb (9.0 - 10.0 kg)
19.8 - 22.0 lb (9.0 - 10.0 kg)
0.043 in. (1.1 mm)
Left Hand
CYLINDER HEAD
Warp Limit
* Lines indicate
straight edge
measurement
0.004 in. (0.1 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