FNM HPE Series Owner's Manual page 86

Don't smoke during the assembly-disassembly operations!
3.3.9 Air filter cleaning or replacement
Ordinary maintenance: made by the boat user and the workshop staff.
The air filter integrity and cleaning is important for the engine life and performances. FNM
series air filters are developed for marine applications When cleaning the filter elements only with
compressed air, never use pressures above 2 bar to avoid damaging them (filters are dry and need no
film of oil on the filtering part).
To remove the air filter:
1. Stop the engine
2. Loosen the collar at the base of the filter
3. Pull out the air filter
4. Clean the filtering sponge, or replace the part. For the HPE/P 300 engine alternatively it is
possible to clean the metal filter with appropriate products.
5. Reassemble the filter and tighten the collar
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FNM HPE Series