Cylinder Head And Valves; Valve Details - Kohler Courage SV470-600 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
G
H
A Seat Angle
B Insert O.D.
C Guide Depth
D Guide I.D.
E Valve Head Diameter
F Valve Face Angle
G Valve Margin (Min.)
H Valve Stem Diameter
Figure 9-10. Valve Details.
9.6
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C
F
D
D
Dimension
89°
41.737/41.783 mm
10.20 mm
6.038/6.058 mm
37.625/37.375 mm
45°
1.5 mm
5.982/6.000 mm
Not For Resale
F
B A
E
Exhaust
A
Insert
Intake
Insert
A
B
Intake
Intake Valve
G
H
Exhaust
89°
36.237/36.263 mm
10.20 mm
6.038/6.058 mm
32.125/32.375 mm
45°
1.5 mm
5.970/5.988 mm