Checking The Valve Lifters; Installing The Valves - Yamaha YZF-R1P Service Manual

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VALVES AND VALVE SPRINGS
2. Measure:
• compressed valve spring force a
Out of specification → Replace the valve
spring.
b Installed length
3. Measure:
• valve spring tilt a
Out of specification → Replace the valve
spring.
EAS00242

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.
EAS00245

INSTALLING THE VALVES

The following procedure applies to all of the
valves and related components.
1. Deburr:
• valve stem end
(with an oil stone)
5 - 29
ENG
Compressed valve spring force
(installed)
Intake valve spring
82 ~ 96 N
(8.2 ~ 9.6 kg, 18.43 ~ 21.58 lb)
at 34.5 mm (1.36 in)
Exhaust valve spring
110 ~ 126 N
(11.0 ~ 12.6 kg, 24.73 ~ 28.32 lb)
at 35 mm (1.38 in)
Spring tilt limit
Intake valve spring
1.7 mm (0.067 in)
Exhaust valve spring
1.8 mm (0.071 in)

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This manual is also suitable for:

Yzf-r1pcR1 2003Yzf-r1p 2001-2003Yzf-r1pc 2001-2003Yzf-r1p 2002Yzf-r1pc 2002

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