Honda HS1810Z Owner's Manual page 82

Air cleaner
A dirty air filter will restrict air flow to the carburetor, reducing engine
performance.
Check the air filter before operation at every year.
The paper filter element must be replaced every year or 300 hours.
1. Place the snowblower on level surface and open the engine hood
(see page 32 or 33 ).
2. Pull off the cover clips and remove the air cleaner cover.
3. Inspect both air filter elements. If they are dirty, clean them.
Replace them if they are damaged. Always replace the paper filter
element at the scheduled interval (see page 75 ).
4. Reinstall the air cleaner cover, and set the cover clips securely.
PAPER
ELEMENT
CLIP
AIR CLEANER COVER
AIR CLEANER CASE
FORM ELEMENT
79