38Cleaning the air filter127345346CAUTION: To prevent eye injury, always wear eye protectionwhen cleaning the filter with compressed air!Do not use fuel to clean the air filter.Unscrew the hood lock (1) counter-clockwise and remove thehood (2).Push up the combination switch (3) (Choke position) to preventdirt particles from falling into the carburetor.Pull the air filter (4) up and out.IMPORTANT: Cover the intake opening with a clean cloth toprevent dirt particles from getting into the carburetor.Choosing the right filter: The fleece filter is for use in dry ordusty conditions. The nylon filter (available as accessory) is foruse in damp conditions.Pry apart the top and bottom of the air filter as shown in Fig-ure.Cleaning the fleece filter: Carefully tap out dust or carefullyblow out dust from the inside with compressed air. Do notbrush the fleece, as this will force dirt particles into the fabric.If the filter is very dirty, it can be washed in lukewarm waterwith regular dishwashing detergent. Note that the fleece filterdoes not need to be cleaned until there is a noticeable loss ofpower. If cleaning the filter does not bring an improvement inperformance, it is time to replace it.Cleaning the nylon filter: Use a soft brush or blow out dirtfrom the inside with compressed air. If the filter is very dirty, itcan be washed in lukewarm water with regular dishwashingdetergent. Clean frequently (several times a day) when workingin very dusty or dirty conditions. Full engine power is possibleonly with a clean air filter!Let the air filter dry completely.Put the top and bottom sections back together.Before assembling the air filter, check the choke flap for any dirtparticles. If there are any, remove them with a brush.Clean the area around the O-ring (5) at the induction opening.If the O-ring is damaged, replace it!CAUTION: If the air filter becomes damaged, replace imme-diately! Pieces of cloth or large dirt particles can destroythe engine!Insert an air filter (4).Push down the combination switch (3) and press the throttle(6) all the way down one time in order to deactivate the throt-tle lock.Put the hood (2) back on, first guiding the two holders (7) intotheir slots.Screw the hood lock (1) back on tightly clockwise.