Yamaha YFM25RY Automobile User Manual


 
CAMSHAFT
5-9
Out of specification Replace the defec-
tive part(s).
EAS24040
INSTALLING THE CAMSHAFT AND
ROCKER ARMS
1. Lubricate:
Camshaft
2. Lubricate:
Rocker arm
Rocker arm shafts
3. Install:
Exhaust rocker arm “1”
Exhaust rocker arm shaft “2”
TIP
Make sure the exhaust rocker arm shaft is
completely pushed into the cylinder head.
4. Install:
Intake rocker arm
Intake rocker arm shaft
TIP
Insert a cylinder head bolt (226 mm) “1” into
the hole in the cylinder head and the intake
rocker arm shaft as shown.
Install the intake rocker arm shaft so that
groove “a” is horizontal and aligning the
notch of the pointed end “b” with the hole in
the cylinder head.
5. Install:
Camshaft “1”
TIP
Screw a 10 mm bolt into the threaded end of
the camshaft and then install the camshaft.
6. Install:
Lock plate
7. Tighten:
Lock plate bolts
Rocker-arm-to-rocker-arm-shaft
clearance
0.009–0.037 mm (0.0004–
0.0015 in)
Recommended lubricant
Camshaft
Molybdenum disulfide oil
Camshaft bearing
Engine oil
Recommended lubricant
Rocker arm
Molybdenum disulfide oil
Rocker arm shaft
Engine oil
Lock plate bolt
8 Nm (0.8 m·kg, 5.9 ft·lb) LOC-
TITE®