Checking The Camshafts - Yamaha FZ09E 2014 Service Manual

Camshaft wrench
90890-04162
YM-04162
EAS23850

CHECKING THE CAMSHAFTS

1. Check:
• Camshaft lobes
Blue discoloration/pitting/scratches  Re-
place the camshaft.
2. Measure:
• Camshaft lobe dimensions "a" and "b"
Out of specification  Replace the camshaft.
Camshaft lobe dimensions
Lobe height (Intake)
36.290–36.390 mm
(1.4287–1.4327 in)
Limit
36.190 mm (1.4248 in)
Base circle diameter (Intake)
27.950–28.050 mm
(1.1004–1.1043 in)
Limit
27.850 mm (1.0965 in)
Lobe height (Exhaust)
35.720–35.820 mm
(1.4063–1.4102 in)
Limit
35.620 mm (1.4024 in)
Base circle diameter (Exhaust)
27.978–28.078 mm
(1.1015–1.1054 in)
Limit
27.878 mm (1.0976 in)
3. Measure:
• Camshaft runout
Out of specification  Replace.
Camshaft runout limit
0.030 mm (0.0012 in)
4. Measure:
• Camshaft-journal-to-camshaft-cap clearance
Out of specification  Measure the camshaft
journal diameter.
Camshaft-journal-to-cam-
shaft-cap clearance
0.028–0.062 mm (0.0011–0.0024
in)
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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.
5-12
CAMSHAFTS