Removing The Crankshaft Assembly; Removing The Plunger Seal; Checking The Crankshaft And Connecting Rod - Yamaha YFM250RX 2008 Service Manual

CRANKSHAFT ASSEMBLY

REMOVING THE CRANKSHAFT ASSEMBLY

1. Remove:
• Balancer weight
• Crankshaft assembly
NOTE: NOTE:
• Remove the crankshaft assembly with the
crankcase separating tool
• Make sure the crankcase separating tool is
centered over the crankshaft assembly.
Crankcase separating tool
90890-01135
Crankcase separator
YU-01135-B

REMOVING THE PLUNGER SEAL

1. Remove:
• Dowel pin
• Plunger seal
• Compression spring
Remove the plunger seal and compression
spring, push the plunger seal lightly and
remove the dowel pin.
CHECKING THE CRANKSHAFT AND
CONNECTING ROD
1. Measure:
• Crankshaft runout
Out of specification → Replace the crank-
shaft, bearing or both.
NOTE: NOTE:
Turn the crankshaft slowly.
Runout limit C
0.03 mm (0.0012 in)
4-73
ENG
.