Carbureted engine
1. Unscrew the nut and screw of the air filter cover, disconnect the latches.
2. Remove the cover and turn over to access the crankcase ventilation filter, which is screwed on from the inside.
3. Loosen the screws and remove the filter assembly. Remove the filter element from the housing.
4. Install a new filter element and screw it onto the air filter cover.
5. Install the air filter cover.
Injection engine
1. Disconnect the clips and remove the air filter cover.
2. Remove the air filter element to provide access to the crankcase breather filter.
3. Remove the crankcase ventilation filter and wipe the mounting area clean.
4. Install a new crankcase ventilation filter and air filter element.
5. Install the cover on the housing, secure with latches.