Yamaha WR250FM Bicycle User Manual


 
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ENG
3. Turn:
Crankshaft
Counterclockwise several turns.
4. Check:
Rotor T.D.C. mark
Align with the crankcase align mark.
Camshaft match marks
Align with the cylinder head surface.
Out of alignment Adjust.
With the rod fully wound and the chain ten-
sioner UP mark a facing upward, install
the gasket 1 and the timing chain ten-
sioner 2, and tighten the bolt 3 to the
specified torque.
T
R
.
.
Bolt (timing chain tensioner):
10 Nm (1.0 m kg, 7.2 ft lb)
Release the screwdriver, check the ten-
sioner rod to come out and tighten the
gasket 4 and the cap bolt 5 to the speci-
fied torque.
T
R
.
.
Tensioner cap bolt:
7 Nm (0.7 m kg, 5.1 ft lb)
5
4
New
5. Install:
Timing mark accessing screw 1
Crankshaft end accessing screw 2
CAMSHAFTS