Checking The Crankcase; Checking The Bearings And Oil Seals; Checking The Circlips And Washers; Installing The Crankshaft - Yamaha XN125 2000 Service Manual

CRANKCASE AND CRANKSHAFT
4-46
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.
EAS00401
CHECKING THE BEARINGS AND OIL
SEALS
1. Check:
• bearings
Clean and lubricate the bearings, then rotate
the inner race with your finger.
Rough movement → Replace.
2. Check:
• oil seals
Damage/wear → Replace.
EAS00402

CHECKING THE CIRCLIPS AND WASHERS

1. Check:
• circlips
Bends/damage/looseness → Replace.
• washers
Bends/damage → Replace.
EAS00408

INSTALLING THE CRANKSHAFT

1. Install:
• crankshaft assembly
• timing chain
CAUTION:
To avoid scratching the crankshaft and to
ease the installation procedure, apply arease
onto the oil seal lips and apply engine oil onto
each bearing.
ENG