North Star 114654 Owner's Manual page 17

Air Filter Maintenance
A dirty air filter may restrict air from entering the
carburetor. To prevent carburetor failure, the air filter
should be maintained regularly. If the engine is operated
in a dusty place, it needs to be maintained more
frequently.
WARNING
Never use fuel or a solvent with a low ignition point
to clean the air filter element, doing so may cause
explosion. Please clean the element with warm
soapy water or non-flammable solvents.
Never run the engine without the air filter and cover
installed or damage to the engine could result. Damage
to the engine by not having the air filter and cover
installed is not covered under warranty.
1) Remove the air filter cover and filter element
assembly.
2) Carefully separate the foam filter element from the
Paper filter element assembly.
a. Paper filter element: Remove the dust by
tapping the filter element several times on a
hard surface or use compressed air from inside
out.
b. Foam filter element: Wash it with warm, soapy
water, then dry it. Soak it in the clean engine oil
and squeeze out the excess oil. If too much oil
remains in the foam filter element, there will be
smoke coming out from the engine in the initial
startup stage.
Maintenance
CAUTION
3) Clean off dust on the air filter cover and inner
surface with a wet rag. Be careful not to allow
dust to enter the carburetor.
4) Install the filter element assembly and the air
filter cover.
Knob
Air filter cover
Butterfly nut
Air filter element
assembly
Center frame
Sealing ring
Air filter holder
assembly
17
Filter element gasket
Paper filter element
assembly
Foam filter element