Removing The Rocker Arms And Camshaft; Removing The Valves And Valve Springs - Yamaha Raptor 90 YFM90RA 2011 Service Manual

CAMSHAFT, ROCKER ARMS AND VALVES
EBS00237
REMOVING THE ROCKER ARMS AND
CAMSHAFT
1. Loosen:
• locknuts
• screw, valve adjusting
2. Remove:
• intake rocker arm shaft
• exhaust rocker arm shaft
• intake rocker arm
• exhaust rocker arm
TIP
Remove the rocker arm shafts with the slide
hammer bolt and weight
Slide hammer set
P/N. YU-01083-A
Slide hammer bolt (M5)
P/N. 90890-04158
YM-04158
Weight
P/N. 90890-01084
3. Remove:
• camshaft comp.
EBS00238
REMOVING THE VALVES AND VALVE
SPRINGS
1. Check:
• valve sealing
Leakage at the valve seat → Check the
valve face, valve seat and valve seat width.
Refer to "CHECKING THE VALVES AND
VALVE SPRINGS".
a. Pour a clean solvent
exhaust ports.
b. Check that the valve seals properly.
There should be no leakage at the valve
seat .
4 - 12
ENG
.
into the intake and