Yamaha XT250X 2008, Service Manual

Page: 205 / 282

CRANKSHAFT ASSEMBLY
5-59
EAS26000
REMOVING THE CRANKSHAFT ASSEMBLY
1. Remove:
●
Crankshaft assembly “1”
NOTE:
Remove the crankshaft assembly using crank-
shaft separating tool “2”.
2. Remove:
●
Dowel pin “1”
●
Plunger pin “2”
●
Spring “3”
NOTE:
Slightly press the plunger pin and pull out the
dowel pin. Then, remove the plunger pin and the
spring.
EAS3C51014
CHECKING THE CRANKSHAFT AND
CONNECTING ROD
1. Measure:
●
Crankshaft runout
Out of specification
→
Replace the crank-
shaft assembly, bearing or both.
NOTE:
Turn the crankshaft slowly.
2. Measure:
●
Big end side clearance
Out of specification
→
Replace the crank-
shaft assembly.
3. Measure:
●
Crankshaft width
Out of specification
→
Replace the crank-
shaft assembly.
4. Check:
●
Bearing
Cracks/damage/wear
→
Replace the crank-
shaft assembly.
5. Check:
●
Crankshaft journal oil passage
Obstruction
→
Blow out with compressed air.
EAS26210
INSTALLING THE CRANKSHAFT
ASSEMBLY
1. Install:
●
Spring “1”
●
Plunger pin “2”
●
Dowel pin “3”
NOTE:
Press the plunger pin by your fingers, and make
sure that it operates smoothly.
Crankcase separating tool
90890-01135
Crankcase separator
YU-01135-B
Runout limit C
0.030 mm (0.0012 in)
Big end side clearance D
0.350
–
0.850 mm (0.0138
–
0.0335
in)
Width A
69.25
–
69.30 mm (2.726
–
2.728 in)
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