Yamaha BEARTRACKER YFM250XC, Service Manual

Page: 213 / 398

6 - 27
DRIV
FINAL DRIVE GEAR AND DRIVE SHAFT
3.Inspect:
●
Oil leakage
By the following inspection steps.
*********************************
Oil leakage inspection steps:
● Clean the entire machine thoroughly, then
dry it.
● Apply a leak-localizing compound or dry
powder spray to the shaft drive.
● Road test the machine long enough to
locate the leak.
Leakage
→
Inspect component housing,
gasket, and/or seal for dam-
age.
Damage
→
Replace component.
NOTE:
●
An apparent oil leak on a new or nearly
new machine may be the result of a rest
preventative coating or excessive seal
lubrication.
●
Always clean the machine and recheck the
suspected location of an apparent leak-
age.
*********************************
Troubleshooting chart
When basic condition “a” and “b” above exist, check the following points:
Elevate and spin the front wheels. Feel
for wheel bearing damage.
YES
Replace the wheel bearing.
(refer to the “FRONT WHEELS AND
FRONT BRAKE” section in CHAPTER 7.
NO
Check the rear axle. Feel for bearing
damage.
NO
Rear axle bearings and drive shaft bear-
ings probably not damaged. Repeat test
or remove individual components.
YES
Remove the rear axle. Check for axle
bearing damage.
YES
Replace the rear axle bearing.
(refer to the “REAR WHEEL AND REAR
AXLE” section in CHAPTER 7.
NO
Remove the drive shaft components.
6