Yamaha 5TE-F8197-10, LIT-11616-16-02 Driv, Following noises may indicate a mechanical defect

TROUBLESHOOTING

DRIVE TRAIN

DRIV

TROUBLESHOOTING

The following conditions may indicate damaged shaft drive components:

	Symptoms			Possible Causes
1.A pronounced hesitation or “jerky” movement				A.Bearing damage.
during acceleration, deceleration, or sustained				B. Improper gear lash.
speed. (This must not be confused with
engine	surging	or	transmission	C.Gear tooth damage.
characteristics.)				D. Broken drive shaft.
2.A “rolling rumble” noticeable at low speed; a
high-pitched whine; a “clunk” from a shaft				E.Broken gear teeth.
drive component or area.				F. Seizure due to lack of lubrication.
3.A locked-up condition of the shaft drive train
mechanism, no power transmitted from the				G.Small foreign objects lodged between the
engine to the front and/or rear wheel.				moving parts.

NOTE:

Areas A, B, and C above may be extremely difficult to diagnose. The symptoms are quite subtle and difficult to distinguish from normal machine operating noise. If there is reason to believe these components are damaged, remove the components and check them.

1.Check:

● Unusual noises

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The following “noises” may indicate a mechanical defect:

a.A “rolling rumble” noise during coasting, acceleration, or deceleration. The noise increases with front and/or rear wheel speed, but it does not increase with higher engine or transmission speeds.

Diagnosis: Possible wheel bearing damage. b.A “whining” noise that varies with

acceleration and deceleration.

Diagnosis: Possible incorrect reassembly, too-little gear lash.

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