Yamaha WR450F(S) Owner's Service Manual page 202

AIR FILTER CLEANING
AIR FILTER CLEANING
NOTE:
Proper air filter maintenance is the biggest key
to preventing premature engine wear and
damage.
CAUTION:
Never run the engine without the air filter
element in place; this would allow dirt and
dust to enter the engine and cause rapid
wear and possible engine damage.
1. Remove:
Air filter case cover 1
G
NOTE:
Loosen the quick screw 2 and draw the air fil-
ter case cover to remove it because its claws
a are inserted in the side cover as shown.
2. Unhook:
Binder 1
G
3. Remove:
Air filter element 1
G
Filter guide 2
G
4. Clean:
Air filter element
G
Clean them with solvent.
NOTE:
After cleaning, remove the remaining solvent
by squeezing the element.
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