Yamaha YZFR6V User Manual

VALVES AND VALVE SPRINGS
5-23
1. Measure:
• Valve spring free length “a”
Out of specification → Replace the valve
spring.
2. Measure:
• Compressed valve spring force “a”
Out of specification → Replace the valve
spring.
3. Measure:
• Valve spring tilt “a”
Out of specification → Replace the valve
spring.
EAS24320
CHECKING THE VALVE LIFTERS
The following procedure applies to all of the
valve lifters.
1. Check:
• Valve lifter
Damage/scratches → Replace the valve lift-
ers and cylinder head.
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)
Free length (intake)
37.47 mm (1.48 in)
Limit
35.60 mm (1.40 in)
Free length (exhaust)
37.67 mm (1.48 in)
Limit
35.79 mm (1.42 in)
Installed compression spring
force (intake)
166.00–190.00 N (37.32–42.71 lb)
(16.93–19.37 kgf)
Installed compression spring
force (exhaust)
165.00–189.00 N (37.09–42.49 lb)
(16.83–19.27 kgf)
Installed length (intake)
32.80 mm (1.29 in)
Installed length (exhaust)
32.80 mm (1.29 in)
b. Installed length
Spring tilt (intake)
2.5°/1.6 mm
Spring tilt (exhaust)
2.5°/1.6 mm
Recommended lubricant
Molybdenum disulfide oil

Yamaha YZFR6V Specifications

General

Brand	Yamaha
Model	YZFR6V
Category	Motorcycle
Language	English