Yamaha BRUIN 350 Owner's Manual download pdf (Page 128)

8-22

8. Apply Yamaha foam air filter oil or other

quality foam air filter oil to the air filter el-

ement.

NOTE:

The air filter element should be wet but not

dripping.

9. Pull the air filter element over its frame,

and then install the lock plate.

10. Install the air filter element assembly.

11. Install the air filter case cover by hooking

the fasteners onto the air filter case.

12. Install the seat.

NOTE:

The air filter element should be cleaned every

20–40 hours. It should be cleaned and lubri-

cated more often if the machine is operated in

extremely dusty areas. Each time the air filter

element maintenance is performed, check the

air inlet to the filter case for obstructions.

Check the air filter case rubber joint to the car-

buretor and manifold fittings for an airtight

seal. Tighten all fittings securely to avoid the

possibility of unfiltered air entering the engine.

CAUTION:

Never operate the engine with the air filter

element removed. This will allow unfiltered

air to enter, causing rapid engine wear and

possible engine damage. Additionally, op-

eration without the air filter element will af-

fect carburetor jetting with subsequent

poor performance and possible engine

overheating.

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Yamaha BRUIN 350 Owner's Manual Page 128