Mercury 45 Service Manual

CYLINDER HEAD
Page 4A-2 90-828631R3 MARCH 1999
CYLINDER HEAD
Warp Limit
* Lines indicate
straight edge
measurement
0.004 in. (0.1 mm)
VALVES
Valve/Valve Seat/Valve Guides:
Valve Clearance (cold)
Intake
Exhaust
Valve Dimensions:
“A” Head Diameter
Intake
Exhaust
“B” Face Width
Intake
Exhaust
“C” Seat Width
Intake
Exhaust
“D” Margin Thickness
Intake
Exhaust
Stem Outside Diameter
Intake
Exhaust
Guide Inside Diameter
Intake
Exhaust
Stem To Guide Clearance
Intake
Exhaust
Stem Run-out Limit (max.)
0.006 - 0.010 in. (0.15 - 0.25 mm)
0.010 - 0.014 in. (0.25 - 0.35 mm)
1.177 - 1.185 in. (29.9 - 30.1 mm)
1.020 - 1.028 in. (25.9 - 26.1 mm)
0.079 - 0.124 in. (2.00 - 3.14 mm)
0.079 - 0.124 in. (2.00 - 3.14 mm)
0.035 - 0.043 in. (0.9 - 1.1 mm)
0.035 - 0.043 in. (0.9 - 1.1 mm)
0.020 - 0.035 in. (0.5 - 0.9 mm)
0.020 - 0.035 in. (0.5 - 0.9 mm)
0.2156 - 0.2161 in. (5.475 - 5.490 mm)
0.2150 - 0.2156 in. (5.460 - 5.475 mm)
0.2165 - 0.2170 in. (5.500 - 5.512 mm)
0.2165 - 0.2170 in. (5.500 - 5.512 mm)
0.0004 - 0.0015 in. (0.010 - 0.037 mm)
0.0010 - 0.0020 in. (0.025 - 0.052 mm)
0.0006 in. (0.016 mm)

Mercury 45 Specifications

General

Horsepower	45 HP
Cylinders	3
Starting	Electric
Full Throttle RPM Range	5000-6000 RPM
Steering	Remote
Exhaust	Through Prop
Shaft Length	20 in