Mercury 5 SERIES Service Manual page 10

SPECIFICATIONS
Valve/Valve Seat/Valve Guides:
Valve Dimensions:
"A" Head Diameter
"B" Face Width
"C" Seat Width
"D" Margin Thickness
VALVES
Stem Outside Diameter
Guide Inside Diameter
Stem To Guide Clearance
Stem Run-out Limit (max.)
Valve Opening Temperature
THERMOSTAT
Full Open Temperature
Valve Lift (Minimum)
Page 1A-6
Valve Clearance (cold)
Intake
Exhaust
Intake
Exhaust
Intake
Exhaust
Intake
Exhaust
Intake
Exhaust
Intake
Exhaust
Intake
Exhaust
Intake
Exhaust
0.002 - 0.005 in. (0.06 - 0.14 mm)
0.004 - 0.007 in. (0.11 - 0.19 mm)
0.980 - 0.988 in. (24.9 - 25.1 mm)
0.941 - 0.949 in. (23.9 - 24.1 mm)
0.102 in. (2.6 mm)
0.102 in. (2.6 mm)
0.031 in. (0.8 mm)
0.031 in. (0.8 mm)
0.028 in. (0.7 mm)
0.047 in. (1.2 mm)
0.216 in. (5.48 mm)
0.214 in. (5.44 mm)
0.2165 in. (5.5 mm)
0.2165 in. (5.5 mm)
0.0008 - 0.0017 in. (0.020 - 0.044 mm)
0.0018 - 0.0028 in. (0.045 - 0.072 mm)
0.0006 in. (0.016 mm)
122 F - 129 F (50 C - 54 C)
145 F - 153 F (63 C - 67 C)
0.12 in. (3 mm)
90-857138R1 MAY 2000