Yamaha RAPTOR 90 2020 Owner's Manual page 95

6. Check the air filter element and replace it if
damaged.
7. Apply Yamaha foam air filter oil or other qual-
ity foam air filter oil to the element.
TIP
The air filter element should be wet but not drip-
ping.
8. Insert the air filter element into the air filter
case.
9. Install the air filter case cover by hooking the
holders onto the air filter case. NOTICE:
Make sure that the air filter element is
properly seated in the air filter case. Never
operate the engine with the air filter ele-
ment removed. This will allow unfiltered air
to enter the engine, causing rapid engine
wear and possible engine damage. Addi-
tionally, operation without the air filter ele-
ment will affect carburetor jetting with
subsequent poor performance and possi-
ble engine overheating.
10. Install the seat.
TIP
The air filter element should be cleaned every 20–
40 hours. It should be cleaned and lubricated
more often if the ATV is operated in extremely
9-18
[ECB00462]
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