Yamaha Tracer MT09TRAH 2017 User Manual

CAMSHAFTS
5-13
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
5. Measure:
• Camshaft journal diameter “a”
Out of specification  Replace the camshaft.
Within specification  Replace the cylinder
head and the camshaft caps as a set.
EAS30258
CHECKING THE TIMING CHAIN AND
CAMSHAFT SPROCKET
1. Check:
• Timing chain
Damage/stiffness  Replace the timing
chain and camshaft and camshaft sprocket
as a set.
2. Check:
• Camshaft sprocket
More than 1/4 tooth wear “a”  Replace the
camshaft sprockets and the timing chain as a
set.
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 (intake side) “1”
• Timing chain guide (top side) “2”
Damage/wear  Replace the defective
part(s).
EAS30266
CHECKING THE TIMING CHAIN TENSIONER
1. Check:
• Timing chain tensioner
Cracks/damage/rough movement  Re-
place.
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Lightly press the timing chain tensioner rod
into the timing chain tensioner housing by
hand.
TIP
While pressing the timing chain tensioner rod,
wind it counterclockwise with a hexagon wrench
“1” (Parts No.: 1RC-12228-00) until it stops.
Camshaft journal diameter
24.459–24.472 mm (0.9630–
0.9635 in)
a. 1/4 tooth
b. Correct
1. Timing chain
2. Camshaft sprocket
1
2

Yamaha Tracer MT09TRAH 2017 Specifications

General

Brand	Yamaha
Model	Tracer MT09TRAH 2017
Category	Motorcycle
Language	English