Yamaha VX110 Sport Service Manual page 194

POWR
a
b
CRANKSHAFT
1
2
CAUTION:
Do not interchange the crankshaft journal
bearings. To obtain the correct crankshaft
journal oil clearance and prevent engine
damage, the crankshaft journal bearings
must be installed in their original positions.
Measurement steps:
• Clean the crankshaft journal bearings,
crankshaft journals, and bearing portions
of the crankcase.
• Place the upper crankcase upside down
on a bench.
• Install the crankshaft journal upper bear-
ings 1 and the crankshaft into the upper
crankcase.
NOTE:
Align the projections a of the crankshaft
journal upper bearings with the notches b
in the upper crankcase.
• Put a piece of Plastigauge 2 on each
crankshaft journal.
NOTE:
Do not put the Plastigauge over the oil hole
in the crankshaft journal.
• Install the crankshaft journal lower bear-
ings into the lower crankcase and assem-
ble the crankcase halves.
NOTE:
• Align the projections a of the crankshaft
journal lower bearings with the notches b
in the lower crankcase.
• Do not move the crankshaft until the
clearance measurement has been com-
pleted.
5-95
E