Checking The Timing Chain Guides; Checking The Timing Chain Tensioner - Yamaha R1 Series 2015 Service Manual

2. Check:
• Camshaft sprocket
More than 1/4 tooth wear "a"
camshaft sprockets and the timing chain as a
set.
a. 1/4 tooth
b. Correct
1. Timing chain
2. Camshaft sprocket
EAS30265

CHECKING THE TIMING CHAIN GUIDES

The following procedure applies to all of the
camshaft sprockets and timing chain guides.
1. Check:
• Timing chain guide (exhaust side) "1"
• Timing chain guide (intake side) "2"
• Timing chain guide (top side) "3"
Damage/wear
part(s).
2
EAS30266

CHECKING THE TIMING CHAIN TENSIONER

1. Check:
• Timing chain tensioner
Cracks/damage/rough movement
place.
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Using the valve spring compressor "1", push
and insert timing chain tensioner rod "2" into
the timing chain tensioner housing.
TIP
Push the timing chain tensioner rod in direction
Replace the
Replace the defective
3
1
Re-
"a", and turn the timing chain tensioner body "3"
in direction "b" until it stops.
Valve spring compressor
90890-04019
Valve spring compressor
YM-04019
1
1
b. Keep pressing the timing chain tensioner rod,
mount clip "4" into groove "5", and lock the
timing chain tensioner rod.
c. Push the timing chain tensioner rod in direc-
tion "c".
d. Make sure that the timing chain tensioner rod
can smoothly move out from the timing chain
tensioner housing in direction "d". If not
smooth, replace the timing chain tensioner
assembly.
d
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5-17
CAMSHAFTS
a
2
b
3
5
c
4