The device must be cleaned regularly to ensure proper operation. 

1. Gently brush the engine air intakes and exits and, if equipped, the spark arrester.
2. Using a sponge, clean the device with water and a mild detergent (such as car shampoo) and rinse with clean water to remove all traces of the cleaning product. A cleaning foam may be used and wiped off using a soft, absorbent cloth. Stubborn stains may be removed using a suitable solvent (white spirit or equivalent) and wiped off using a soft, absorbent cloth.
3. Check the overall condition of the device (no leakage, good tightening of screws, fittings and hoses, etc.).
4. Apply a rust-proofing product to damaged parts, replace any defective parts and damaged stickers if necessary. Use only original parts and contact an agent if necessary.