Checking The Valves And Valve Guides - Yamaha XV1600A1999 Service Manual

VALVES AND VALVE SPRINGS
NOTE:
Identify the position of each part very carefully
so that it can be reinstalled in its original place.
EAS00239
CHECKING THE VALVES AND VALVE
GUIDES
The following procedure applies to all of the
valves and valve guides.
1. Measure:
S valve stem-to-valve guide clearance
Valve stem-to-valve guide clearance =
2. Replace:
S valve guide
NOTE:
To ease valve guide removal and installation,
and to maintain the correct fit, heat the cylinder
head to 100_C in an oven.
5-46
Valve guide inside diameter a –
Valve stem diameter b
Out of specification ! Replace the valve
guide.
Valve stem-to-valve guide clea-
rance
Intake
0.010 0.037 mm
<Limit>: 0.08 mm
Exhaust
0.025 0.052 mm
<Limit>: 0.1 mm
ENG