Yamaha YZ250F(S) Owner's Service Manual page 182

AIR FILTER CLEANING
2. Clean:
Air filter element
G
Clean them with solvent.
NOTE:
After cleaning, remove the remaining solvent
by squeezing the element.
CAUTION:
Do not twist the element when squeezing
G
the element.
Leaving too much of solvent in the ele-
G
ment may result in poor starting.
3. Inspect:
Air filter element
G
Damage → Replace.
4. Apply:
Foam-air-filter oil or equivalent oil to the
G
element.
NOTE:
Squeeze out the excess oil. Element should
be wet but not dripping.
5. Install:
Air filter guide 1
G
NOTE:
Align the projection a on air filter guide with
the hole b in air filter element.
6. Apply:
Lithium soap base grease
G
On the matching surface a on air filter
element.
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