Yamaha 5TE-F8197-10 Model Vehicle User Manual


 
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ENG
CAMSHAFT, ROCKER ARMS AND VALVES
2.Remove:
Valve cotters
N
OTE:
Attach a valve spring compressor 1 between
the valve spring retainer and the cylinder head
to remove the valve cotters.
CHECKING THE CAMSHAFT
1.Check:
Cam lobes
Pitting/scratches/blue discoloration
Replace.
2.Measure:
Cam lobes length a and b.
Out of specification Replace.
Valve spring compressor:
P/N. YM-04019, 90890-04019
Camshaft lobe limit:
Intake:
a
40.52 mm (1.595 in)
b
32.08 mm (1.263 in)
Exhaust:
a
40.52 mm (1.595 in)
b
32.08 mm (1.263 in)
CHECKING THE ROCKER ARMS AND
CAMSHAFT
1.Check:
Camshaft lobe contact surface 1
Valve adjusters 2
Blue discoloration/pitting/scratches
Replace.