Mercury MerCruiser D2.8L D-Tronic Service Manual page 248

ENGINE MECHANICAL
VALVES
Page 3A-48
a
d
41 mm Intake Valve
a - Stem O. D. Measurement: 7.95 mm(.3129 in.)
b - Face Width Measurement: 3.57 - 3.85 mm (.1405 - .1515 in.)
c - Margin (After Grinding) Measurement: 1.82 mm (.071 in.)
d - Face Angle : 29 Degrees and 30 Minutes
e - Stem O. D. Measurement: 7.93 mm (.3122 in.)
f - Face Width Measurement: 2.64 - 2.99 mm (.1039 - .1177 in.)
g - Margin (After Grinding) Measurement: 1.30 mm (.051 in.)
h - Face Angle: 44 Degrees and 30 Minutes
b
f
c
g
38 mm Exhaust Valve
SERVICE MANUAL NUMBER 22
e
h
90-860074--1 FEBRUARY 2002