Yamaha Vmax VMX17C 2009 - Checking the Camshaft Gears; Checking the Decompression System; Checking the Timing Chain Guides; Checking the Timing Chain Tensioners

CAMSHAFTS
5-16
EAS2S31035
CHECKING THE CAMSHAFT GEARS
1. Check:
• Intake camshaft gear (front cylinders)
• Intake camshaft gear (rear cylinders)
Damage/wear → Replace the camshaft
gears as a set.
EAS23980
CHECKING THE DECOMPRESSION SYSTEM
1. Check:
• Decompression system
T
IP
• Check that the decompression pin “1” projects
from the camshaft.
• Check that the decompression cam “2” and de-
compression pin “1” moves smoothly.
EAS23950
CHECKING THE TIMING CHAIN GUIDES
The following procedure applies to both of the
timing chain guides.
1. Check:
• Timing chain guide
Damage/wear → Replace.
EAS23960
CHECKING THE TIMING CHAIN
TENSIONERS
The following procedure applies to both of the
timing chain tensioners.
1. Disassemble:
• Timing chain tensioner
T
IP
Squeeze timing chain tensioner clip 2 “5”, and
then remove the timing chain tensioner spring
and timing chain tensioner rod.
2. Check:
• Timing chain tensioner housing
• Timing chain tensioner rod
• Timing chain tensioner spring seat
• Timing chain tensioner spring
• Timing chain tensioner clips
Damage/wear → Replace the timing chain
tensioner.
3. Assemble:
• Timing chain tensioner
T
IP
Prior to installing the timing chain tensioner rod,
drain the engine oil from the timing chain ten-
sioner housing.
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a. Install the timing chain tensioner clip 2 “1” and
clip 1 “2”.
T
IP
Be sure to face the ends of timing chain tension-
er clip 2 “1” in the direction shown in the illustra-
tion and to fit timing chain tensioner clip 1 “2” in
the groove “a” in the timing chain tensioner
housing.
a. 1/4 tooth
b. Correct
1. Timing chain roller
2. Camshaft sprocket
1
2
1. Timing chain tensioner rod
2. Timing chain tensioner spring seat
3. Timing chain tensioner spring
4. Timing chain tensioner clip 1
5. Timing chain tensioner clip 2
6. Timing chain tensioner housing
6
5
4
3
2
1