Checking The Timing Chain And Timing Chain Guide; Checking The Bearings And Oil Seals; Assembling The Crankcase - Yamaha YBR125ED 2005 Service Manual

CRANKCASE
EAS00207
CHECKING THE TIMING CHAIN AND
TIMING CHAIN GUIDE
1. Check:
• timing chain
Damage/stiffness → Replace the timing
chain and camshaft sprocket as a set.
2. Check:
• timing chain guide (intake side)
Damage/wear → Replace.
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 seal
Damage/wear → Replace.
EAS00418

ASSEMBLING THE CRANKCASE

1. Lubricate:
• bearings
• oil seal
Recommended lubricant
Bearing
Engine oil
Oil seal
Lithium-soap-based grease
2. Install:
• bearings
New
• bearing retainer
(to the right crankcase)
• bearing retainer bolts
NOTE:
Install the bearing retainer with its rounded
side facing the bearing.
3. Thoroughly clean all the gasket mating sur-
faces and crankcase mating surfaces.
5 - 70
ENG
7 Nm (0.7 m · kg, 5.1 ft · lb)
LT