Yamaha WaveRunner FX140 Manual De Servicio página 330

POWR
CAMSHAFTS
5. Measure:
• Camshaft journal diameter a
Out of specification → Replace the cam-
shaft.
Within specification → Replace the cyl-
inder head and the camshaft caps as a
set.
Camshaft journal diameter:
24.44–24.45 mm
(0.9622–0.9626 in)
Camshaft sprockets inspection
1. Check:
• Camshaft sprocket
Wear/damage → Replace the camshaft
sprockets and timing chain as a set.
a 1/4 of a tooth
b Correct
1 Timing chain
2 Camshaft sprocket
Timing chain tensioner inspection
1. Check:
• Timing chain tensioner
Cracks/damage/rough movement →
Replace.
Checking steps:
• While lightly pressing the timing chain
tensioner rod by hand, turn the tensioner
rod fully clockwise with a thin screwdriver
1.
• Remove the screwdriver and slowly
release the timing chain tensioner rod.
• Make sure that the timing chain tensioner
rod comes out of the timing chain ten-
sioner housing smoothly. If there is rough
movement, replace the timing chain ten-
sioner.
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