Separating The Crankcase; Checking The Crankcase - Yamaha YBR125ED 2005 Service Manual

CRANKCASE

SEPARATING THE CRANKCASE

1 1. Separate:
• right crankcase 1
• left crankcase 2
M MMM M MMM
a. Remove the crankcase bolts.
NOTE:
_
• Loosen each bolt 1/4 of a turn at a time and
after all the bolts are loosened, remove
them.
• Loosen the bolts in stages, using a criss-
cross pattern.
2
b. Remove the right crankcase.
NOTE:
_
Insert a screwdriver or pry bar into the pry
points in the crankcase and then carefully pry
apart the crankcase halves.
CAUTION:
_
Use a soft hammer to tap on one side of the
crankcase. Tap only on reinforced portions
of the crankcase. Do not tap on the crank-
case mating surfaces. Work slowly and
carefully. Make sure that the crankcase
halves separate evenly.
c. Remove the dowel pins.
L LLL L LLL
EAS00399

CHECKING THE CRANKCASE

1. Thoroughly wash the crankcase halves in a
mild solvent.
2. Thoroughly clean all the gasket surfaces
and crankcase mating surfaces.
3. Check:
• crankcase
Cracks/damage → Replace.
• oil delivery passages
Obstruction → Blow out with compressed
air.
5 - 69
ENG
M M MMM M M MMM M
L L LLL L L LLL L
M MMM M M MMM M MMM
L LLL L L LLL L LLL