Checking The Rocker Arms And Rocker Arm Shafts - Yamaha XVS250 2001 Service Manual

ROCKER ARMS AND CAMSHAFT
4. Check:
EAS00206
CHECKING THE ROCKER ARMS AND
ROCKER ARM SHAFTS
The following procedure applies to all of the
rocker arms and rocker arm shafts.
1. Check:
2. Check:
3. Check:
4. Measure:
5. Measure:
6. Calculate:
NOTE:
Calculate the clearance by subtracting the rock-
er arm shaft outside diameter from the rocker
arm inside diameter.
5-17
D camshaft oil passage
Obstruction  Blow out with compressed air.
D rocker arm 1
Damage/wear  Replace.
D rocker arm lobe 2
Excessive wear  Replace the rockerarm.
D rocker arm shaft
Blue discoloration/excessive
ting/scratches  Replace or check the lu-
brication system.
D rocker arm inside diameter a
Out of specification  Replace.
Rocker arm inside diameter
10.000 10.015 mm
<Limit>: 10.035 mm
D rocker arm shaft outside diameter b
Out of specification  Replace.
Rocker arm shaft outside diameter
9.981 9.991 mm
<Limit>: 9.961 mm
D rocker-arm-to-rocker-arm-shaft clearance
Above 0.08 mm  Replace the defective
part(-s).
Rocker-arm-to-rocker-arm-shaft
clearance
0.009 0.034 mm
<Limit>: 0.08 mm
ENG
wear/pit-