Yamaha YXR660FAS Service Manual download pdf (Page 78)

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CHK

ADJ

EB300000

PERIODIC CHECKS AND ADJUSTMENTS

INTRODUCTION

This chapter includes all information necessary to perform recommended checks and adjustments.

These preventive maintenance procedures, if followed, will ensure more reliable vehicle operation

and a longer service life. The need for costly overhaul work will be greatly reduced. This information

applies to vehicles already in service as well as to new vehicles that are being prepared for sale. All

service technicians should be familiar with this entire chapter.

EB301000

PERIODIC MAINTENANCE/LUBRICATION

NOTE:

• For vehicles not equipped with an odometer or hour meter, follow the month maintenance inter-

vals.

• For vehicles equipped with an odometer or an hour meter, follow the km (mi) or hours mainte-

nance intervals. However, keep in mind that if the vehicle isn’t used for a long period of time, the

month maintenance intervals should be followed.

ITEM ROUTINE

Whichever

comes first

INITIAL EVERY

month136612

(mi)

320

(200)

1,200

(750)

2,400

(1,500)

2,400

(1,500)

4,800

(3,000)

hours 20 75 150 150 300

Valves*

• Check valve clearance.

• Adjust if necessary.

Cooling system

• Check coolant leakage.

• Repair if necessary.

• Replace coolant every 24 months.

Spark plug

• Check condition.

• Adjust gap and clean.

• Replace if necessary.

Air filter element

• Clean.

• Replace if necessary.

Every 20 ~ 40 hours

(More often in wet or dusty areas.)

Carburetor*

• Check idle speed/starter operation.

• Adjust if necessary.

Crankcase breather

system*

• Check breather hose for cracks or damage.

• Replace if necessary.

Exhaust system*

• Check for leakage.

• Tighten if necessary.

• Replace gasket(s) if necessary.

Sparks arrester

• Clean.

Fuel line*

• Check fuel hose for cracks or damage.

• Replace if necessary.

Engine oil

• Replace (warm engine before draining).

Engine oil filter car-

tridge

• Replace.

Final gear oil

• Check oil level/oil leakage.

• Replace.

Differential gear oil

Front brake*

• Check operation/brake pad wear/fluid leakage/see

NOTE page 3-2.

• Correct if necessary. Replace pads if worn to the limit.

Rear brake*

• Check operation/brake pad wear/fluid leakage/see

NOTE page 3-2.

• Correct if necessary. Replace pads if worn to the limit.

INTRODUCTION/

PERIODIC MAINTENANCE/LUBRICATION

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