Removing The Valve - Yamaha F6AMH Manuel D'entretien

CAMSHAFT AND VALVES

REMOVING THE VALVE

Remove:
Valve spring lock 1


Valve spring retainer 2


Valve spring 3


Valve spring seat 4


Intake valve or exhaust valve 5


Valve spring compressor:
YM-01253/90890-04019
Attachment:
YM-04018/90890-04018
NOTE:
Set the attachment on to the center of the


spring retainer.
Do not overtighten the valve spring


compressor.
CHECKING THE VALVE AND VALVE
GUIDE
1. Measure:
Valve guide inside diameter


Out of specification
Valve guide inside diameter
(intake guide and exhaust guide):
5.500 - 5.512 mm
( 0.2165 - 0.2170 in)
2. Measure:
Valve seat width


Out of specification
Valve seat width
(intake valve and exhaust valve):
0.6 - 0.8 mm (0.023 - 0.031 in)
3. Measure:
Valve margin thickness


Out of specification
Valve margin thickness
(intake valve and exhaust valve):
0.7 mm (0.027 in)
5-45
a
Replace.

a
b
Replace.

b
c
Replace.

c