Valve Clearance
• Intake 0.25 mm [0.010 in]
• Exhaust 0.51 mm [0.020 in]
Valve Guide Diameter (Maximum)
8.090 mm [0.3185 in] Max
8.019 mm [0.3157 in] Min
Valve Stem Diameter (Minimum)
7.94 mm [0.3126 in] Min
7.98 mm [0.3142 in] Max
Valve Seat Angle
Intake 30 degrees
Exhaust 45 degrees
Valve Depth (Installed)
0.99 to 1.52 mm [0.039 to 0.060 in]
• Cylinder Head Flatness
Use a straight edge and feeler gauge to measure the overall flatness of the cylinder head deck.
Visually inspect for any localized dips or imperfections. If present, the cylinder head deck must be ground.
Refer to the Alternative Repair Manual, Bulletin No. 3810234, for regrind/milling procedures and limits.
