Checking The Valves And Valve Guides - Yamaha FZS1000N Service Manual

VALVES AND VALVE SPRINGS
4. Remove:
R upper spring seat 1
R valve spring 2
R oil seal 3
R lower spring seat 4
R valve 5
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:
R valve-stem-to-valve-guide clearance
Valve-stem-to-valve-guide clearance =
Valve guide inside diameter A –
Valve stem diameter B
Out of specification ! Replace the valve
guide.
5-22
ENG
Valve-stem-to-valve-guide
clearance
Intake
0.010 X 0.037 mm
(0.0004 X 0.0015 in)
<Limit>: 0.08 mm (0.0031 in)
Exhaust
0.020 X 0.047 mm
(0.0008 X 0.0019 in)
<Limit>: 0.1 mm (0.0039 in)