VERS.2021.09.28 CS451_MAN_EN
24
Oil Bath
Some engines are equipped with an oil bath air cleaner. Follow maintenance and oil change
information specified in this section and in Maintenance Schedule.
Move bails on air cleaner cover down; remove latches from under tabs on base; remove cover.
1. Remove foam filter cover from oil reservoir cup. Remove foam filter support plate and foam filter or
foam elements. 2. CH270 engines: Replace or wash foam filter in warm water with detergent. Rinse
and allow to air dry. CH395/CH440 engines: Replace or wash foam elements in warm water with
detergent. Rinse and allow to air dry. 3. Lightly oil foam filter or foam elements with new engine oil;
squeeze out excess oil. 4. Remove foam filter support plate and oil retainer ring from oil reservoir cup.
5. Remove oil reservoir cup from base. Empty oil from cup and wash cup in warm water with detergent.
Rinse and dry cup. 6. Make sure O-ring is in place on air cleaner base. Set oil reservoir cup on base.
7. Fill oil reservoir cup up to oil level mark with same grade of oil as in crankcase. See Oil
Recommendations. 8. Reinstall oil retainer ring and foam filter support plate in oil reservoir cup.
9. Reinstall taller foam element first, then shorter foam element on oil reservoir cup. Place foam filter
support plate on elements. Reinstall foam filter cover. Make sure O-ring is in place on top of filter
cover.
Position air cleaner cover for normal operation (sun decal out) or cold weather operation (snowflake
decal out). Place latches under tabs on base; lift up bails to secure cover.
