Honda GCV520 Owner's Manual page 23

3. Air cleaner service
A dirty air cleaner will restrict air flow to the carburetor. To prevent
carburetor malfunction, service the air cleaner regularly. Service
more frequently when operating the engine in extremely dusty
areas.
Never use gasoline or low flash point solvents for cleaning the air
cleaner element. A fire or explosion could result.
Never run the engine without the air cleaner. Rapid engine wear
will result from contaminants, such as dust and dirt being drawn
into the engine.
1. Remove the two air cleaner cover bolts from the air cleaner
cover, and remove the cover.
2. Remove the paper element from the air cleaner case. Remove
the foam element from the air cleaner cover.
3. Clean the air filter elements if they are to be reused.
Foam element: Clean in warm soapy water, rinse and dry thor-
oughly. Or clean in non-flammable solvent and dry.
Paper element: Tap the element lightly several times on a hard
surface to remove excess dirt, or blow compressed air (not ex-
ceeding 2.1 kg/cm (30 psi)) through the filter from the air
cleaner case side. Never try to brush the dirt off; brushing will
force dirt into the fibers. Replace the paper element if it is
excessively dirty.
4. Wipe dirt from the inside of the air cleaner case and cover, using
a moist rag. Be careful to prevent dirt from entering the clean
chamber that leads to the carburetor.
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