Installing The Valves - Yamaha XVS1300A 2007 Service Manual

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2. Measure:
• Compressed valve spring force "a"
Out of specification → Replace the valve
spring.
Installed compression spring
force (intake)
171–197 N (38.44–44.29 lbf)
(17.44–20.09 kgf)
Installed compression spring
force (exhaust)
171–197 N (38.44–44.29 lbf)
(17.44–20.09 kgf)
Installed length (intake)
35.00 mm (1.38 in)
Installed length (exhaust)
35.00 mm (1.38 in)
b. Installed length
3. Measure:
• Valve spring tilt "a"
Out of specification → Replace the valve
spring.
Spring tilt (intake)
2.5 °/1.9 mm
Spring tilt (exhaust)
2.5 °/1.9 mm
email: info@motomatrix.co.uk
VALVES AND VALVE SPRINGS
EAS24340

INSTALLING THE VALVES

The following procedure applies to all of the
valves and related components.
1. Deburr:
• Valve stem end
(with an oil stone)
2. Lubricate:
• Valve stem "1"
• Valve stem seal "2"
(with the recommended lubricant)
Recommended lubricant
Molybdenum disulfide oil
3. Lubricate:
• Valve stem end
(with the recommended lubricant)
Recommended lubricant
Engine oil
4. Install:
• Lower spring seat "1"
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