Installation Instructions

6. Cylinder Head / Valve
6-2
Precautions in Operation
 This chapter is contained maintenance and service for cylinder head, valve, and camshaft as well as
rocker arm.
 Remove the engine from the frame before repairing the cylinder head.
Specification
Item Standard Limit
Compression pressure 12+/2 kg/cm2 ---
Intake 30.800~30.920 3.075 Camshaft Height of cam lobe
Exhaust 30.411~30.531 30.26
ID of valve rocker arm 12.000~12.018 12.10 Rocker
arm
OD of valve rocker arm shaft 11.966~11.984 11.910
Intake 4.975~4.990 4.900 OD of valve stem
Exhaust 4.955~4.970 4.900
Guide seat 5.000~5.012 5.030
Intake 0.010~0.037 0.080 Clearance between
valve stem and guide
Exhaust 0.030~0.057 0.100
Free length of valve spring 35.000 31.500
Valve
Valve seat width 1.000 1.6
Tilt angle of cylinder head --- 0.05
Torque Value
Cylinder head bolt (LH) 2.0~2.4 kg-m
Cylinder head Nut 2.0~2.4 kg-m
Sealing bolt of cam chain auto-tensioner 0.8~1.2 kg-m
Bolt of cam chain auto-tensioner 1.2~1.6 kg-m
Cam sprocket cover bolts 0.8~1.2 kg-m
Cam sprocket bolt 1.0~1.2 kg-m
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