ENGINE MECHANICAL
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 3A-13
Engine Specifications (continued)
NOTICE
UNIT OF MEASUREMENT: mm (in.)
Rocker Arm
Description Measurement
Journal Diameter 24.97 - 25.00 (.983 - .984)
Bushing lnner Diameter 25.021 - 25.020 (.985 - .985)
Maximum Clearance 0.062 (.002)
Valve Adjustment
Valve Exhaust Intake
Clearance Hydraulically Controlled
Valve
Valve Exhaust Intake
Head Diameter 38 (1.49) 40.9 (1.61)
Stem Diameter 7.93 (.3122) 7.95 (.3129)
Face Width 2.64 - 2.99 (.1039 - .1177) 3.57 - 3.85 (.1405 - .1515)
Margin (New) 1.73 (.068) 1.82 (.071)
Margin (After Grinding) 1.30 (.051)
Face Angle (New) 44 degrees 30 minutes 29 degrees 30 minutes
Valve Seat
Valve Exhaust Intake
Seat Angle 45 degrees 30 degrees
Seat Width 2.00 (.078) 3.25 (.127)
Seat Outer Diameter 39 (1.53) 42 (1.653)
Seat Height 7.90 (.311) 7.80 (.307)
Head SurfaceTo Seat 2.05 - 2.25 (.080 - .088) 2.17 - 2.37 (.085 - .093)
Valve Recession (Max.) 0.03 (.001) 0.03 (.001)
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