Yamaha Tracer MT09TRAH 2017 User Manual

CAMSHAFTS
5-12
EAS30257
CHECKING THE CAMSHAFTS
1. Check:
• Camshaft lobes
Blue discoloration/pitting/scratches  Re-
place the camshaft.
2. Measure:
• Camshaft lobe dimensions “a”
Out of specification  Replace the camshaft.
3. Measure:
• Camshaft runout
Out of specification  Replace.
4. Measure:
• Camshaft-journal-to-camshaft-cap clearance
Out of specification  Measure the camshaft
journal diameter.
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a. Install the camshaft into the cylinder head
(without the camshaft caps).
b. Position strip of Plastigauge® “1” onto the
camshaft journal as shown.
c. Install the dowel pins and camshaft caps.
TIP
• Tighten the camshaft cap bolts in stages and in
a crisscross pattern, working from the inner
caps out.
• Do not turn the camshaft when measuring the
camshaft journal-to-camshaft cap clearance
with the Plastigauge®.
d. Remove the camshaft caps and then mea-
sure the width of the Plastigauge® “2”.
Camshaft wrench
90890-04162
Camshaft wrench
YM-04162
Camshaft lobe dimensions
Lobe height (Intake)
36.290–36.390 mm (1.4287–
1.4327 in)
Limit
36.190 mm (1.4248 in)
Lobe height (Exhaust)
35.720–35.820 mm (1.4063–
1.4102 in)
Limit
35.620 mm (1.4024 in)
Camshaft runout limit
0.030 mm (0.0012 in)
Camshaft-journal-to-camshaft-
cap clearance
0.028–0.062 mm (0.0011–0.0024
in)
Limit
0.080 mm (0.0032 in)
Camshaft cap bolt
10 N·m (1.0 kgf·m, 7.2 lb·ft)
T
R
.
.

Yamaha Tracer MT09TRAH 2017 Specifications

General

Brand	Yamaha
Model	Tracer MT09TRAH 2017
Category	Motorcycle
Language	English