Yamaha WaveRunner FX140 Manuel D'entretien page 326

POWR
3 6
5 4
3 9 8 6
5 7
10 4
CAMSHAFTS
1
7 10 1
9 8
2
13 17 16 12 1
2
11 15 18 14
4. Remove:
• Timing chain tensioner 1
• Gasket
5. Remove:
• Camshaft caps
• Dowel pins
NOTE:
Loosen the intake and exhaust camshaft cap
bolts in the sequence shown.
6. Remove:
• Intake camshaft 1
• Exhaust camshaft 2
NOTE:
To prevent the timing chain from falling into the
crankcase, fasten it with a wire 3.
Camshaft inspection
1. Check:
• Camshaft lobes
Blue discoloration/pitting/scratches →
Replace the camshaft.
2. Measure:
• Camshaft lobe dimensions a and b
Out of specification → Replace the cam-
shaft.
Minimum cam lobe dimensions:
Intake camshaft:
a 32.25 mm (1.270 in)
b 25.00 mm (0.984 in)
Exhaust camshaft:
a 32.65 mm (1.285 in)
b 25.00 mm (0.984 in)
5-53
E