Removing The Rocker Arms And Camshaft; Checking The Camshafts - Yamaha BT1100 2002 Service Manual

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ROCKER ARMS AND CAMSHAFT
EAS00202
REMOVING
CAMSHAFT
1. Remove:
• rocker arm shafts (intake and exhaust) 1
• rocker arms 2
NOTE:
Use a slide hammer 3 and weight 4 to remove
the rocker arm shafts.
Slide hammer bolt (M8):
Weight:
2. Remove:
• camshaft bushing 1
• camshaft 2
NOTE:
Screw a 10 mm bolt 3 into the threaded end of
the camshaft and pull out the camshaft.
EAS00205

CHECKING THE CAMSHAFTS

1. Check:
• camshaft bushings
Damage/wear
2. Check:
• camshaft lobes
Blue discoloration/pitting/scratches
place the camshaft.
3. Measure:
• camshaft lobe dimensions a and b
Out of specification
shaft.
Camshaft lobe dimension limit
4. Check:
• camshaft oil passage
Obstruction
air.
4-17
ENG
THE
ROCKER
90890-01085
90890-01084
Replace.
Replace the cam-
Intake
a 39.012 mm
b #1: 31.993 mm
#2: 32.027 mm
Exhaust
a 39.045 mm
b 32.100 mm
Blow out with compressed
ARMS
AND
Re-

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