Yamaha BREEZE YFA1R Owner's Manual download pdf (Page 104)

EBU00870

Spark plug inspection

The spark plug is an important engine compo-

nent and is easy to inspect. The condition of the

spark plug can indicate the condition of the

engine.

For example, a very white center electrode

porcelain color could indicate an intake air leak

or carburetion problem for that cylinder. Do not

attempt to diagnose such problems yourself.

Instead, take the ATV to a Yamaha dealer. You

should periodically remove and inspect the

spark plug because heat and deposits will cause

the spark plug to slowly break down and erode.

If electrode erosion becomes excessive, you

should replace the spark plug with one of the

proper type.

5. Fill the engine with oil and install the oil filler

bolt.

Be sure no foreign material enters the

crankcase.

6. Start the engine and warm up for a few min-

utes. While warming up, check for oil leakage.

If oil leakage is found, stop the engine imme-

diately and check for the cause.

7. Check the oil level.

8-9

Recommended oil:

See page 10-2

Oil quantity:

Total amount:

0.6 L (0.53 Imp qt, 0.63 US qt)

Standard spark plug:

CR7HS (NGK)

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Yamaha BREEZE YFA1R Owner's Manual Page 104