Yanmar 6LPA-STP2 Service Manual page 106

ENGINE
3. Measure the spring force after installing the
spring at the specified length, using a spring
tester (Figure 5-38).
Spring force:
• 24.2 to 26.8 kgf, 237.32 to 262.82 N (53.3 to
59.1 lb-ft) at 39.5-mm (1.555 in.) position.
If the spring force is not within the specified
range, replace the valve spring.
Figure 5-38
Figure 5-38
5-26
Valve Rocker Arm and Shaft Inspection
1. Inspect the rocker arms for smooth rotation
(Figure 5-39). If binding or hooking is felt,
repair or replace.
Figure 5-39
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© 2007 Yanmar Marine International
Cylinder Head
Figure 5-39
6LPA Service Manual
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