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8. Apply Yamaha foam air filter oil or other
quality foam air filter oil to the air filter el-
ement. If foam air filter oil is not available,
engine oil may be used.
NOTE:
_
The air filter element should be wet but not
dripping.
_
9. Pull the air filter element over its frame.
10. Install the air filter element by installing
the wing bolt.
11. Install the air filter case cover by hooking
the holders.
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 air filter ele-
ment maintenance is performed, check the air
inlet to the air filter case for obstructions.
Check the air intake duct between the air filter
case and the carburetor and the manifold fit-
tings for an airtight seal. Tighten all fittings se-
curely 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 the engine, causing rapid en-
gine wear and possible engine damage.
Additionally, operation without the air fil-
ter element will affect carburetor jetting
with subsequent poor performance and
possible engine overheating.
_
U5TG10.book Page 25 Monday, April 7, 2003 8:50 PM