Yamaha BLASTER YFS200N Owner's Manual page 110

6. Inspect the element. If damaged, replace
it.
7. Apply Yamaha foam air filter oil or other
quality foam air filter oil to the element. If
foam air filter oil is not available, motor oil
may be used.
NOTE:
The element should be wet but not dripping.
8. Reinstall the element to the element guide.
9. Reinstall the element assembly and parts
removed for access.
NOTE:
The air filter element should be cleaned every
20 ~ 40 hours. It should be cleaned and lubricat-
ed more often if the machine is operated in
extremely dusty areas. Each time filter element
maintenance is performed, check the air inlet to
the filter case for obstructions. Check the air
cleaner rubber joint to the carburetor and mani-
fold fittings for an airtight seal. Tighten all fittings
securely to avoid the possibility of unfiltered air
entering the engine.
cC
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, opera-
tion without the filter element will affect car-
buretor jetting with subsequent poor perfor-
mance and possible engine overheating.
8-10