Cylinder Head And Valves; Inspection And Service; Valve Details - Kohler Courage SV470 Service Manual

Section 9
Inspection and Reconditioning

Cylinder Head and Valves

Inspection and Service

Carefully inspect the valve mechanism parts. Inspect the valve springs and related hardware for excessive wear
or distortion. Check the valves and valve seats for evidence of deep pitting, cracks, or distortion. Check the
running clearance between the valve stems and guides. See Figure 9-10 for valve details and specifications.
Exhaust Valve E
D
F
B
A Seat Angle
Guide Depth
B
C Guide I.D.
D Valve Head Diameter
E Valve Face Angle
Valve Margin (Min.)
F
G Valve Stem Diameter
Figure 9-10. Valve Details.
9.6
A
G
C
Dimension
A
C
Intake
89°
10.20 mm
6.038/6.058 mm
37.625/37.375 mm
45°
1.5 mm
5.982/6.000 mm
Intake Valve
E
D
F
G
B
Exhaust
89°
6.2 mm
6.038/6.058 mm
32.125/32.375 mm
45°
1.5 mm
5.970/5.988 mm