Rocker Arms And Camshaft; Removing The Rocker Arms And Camshaft; Checking The Camshaft - Yamaha XT660Z 2008 Service Manual

EAS00202
REMOVING THE ROCKER ARMS AND
CAMSHAFT
1. Loosen:
• Locknuts
• Adjusting screws
2. Remove:
• Camshaft retainer "1"
3. Remove:
• Intake rocker arm shaft
• Exhaust rocker arm shaft
• Intake rocker arm
• Exhaust rocker arm
NOTE:
Remove the rocker arm shafts with the slide
hammer bolt "1" and weight "2".
Slide hammer bolt
90890-01083
Weight
90890-01084
4. Remove:
• Camshaft

ROCKER ARMS AND CAMSHAFT

EAS00205

CHECKING THE CAMSHAFT

1. Check:
• Camshaft lobes
Blue discoloration/pitting/scratches →
Replace the camshaft and camshaft sprock-
et.
2. Measure:
• Camshaft lobe dimensions "a" and "b"
Out of specification → Replace the cam-
shaft.
1
5-15
Camshaft lobe dimensions
Intake
"a" 43.488-43.588 mm
(1.7121-1.7161 in)
<Limit>:
43.338 mm (1.7062 in)
"b" 36.959-37.059 mm
(1.4551-1.4590 in)
<Limit>:
36.859 mm (1.4511 in)
Exhaust
"a" 43.129-43.229 mm
(1.6980-1.7019 in)
<Limit>:
43.029 mm (1.694 in)
"b" 37.007-37.107 mm
(1.4570-1.4609 in)
<Limit>:
36.907 mm (1.4530 in)