30 X7503253301© 08/2013 ECHO Inc.MAINTENANCE CS-400FAir Filter1. Check before every use.2. Close choke ( ).3. Remove air cleaner cover (A) and air filter (B).4. Lightly brush dust off air filter, or clean withcompressed air, or replace the air filter.5. Install air filter and cover.Spark Plug• Check periodically.• The standard spark gap is 0.65 mm (0.026 in.).• Fastening torque:15 to 17 N•m (130 to 150 in•lbf).1. Remove air cleaner cover and remove spark plug.2. Correct the spark gap if it is wider or narrower than the standard gap.Check Fuel System• Check before every use.• After refueling, make sure fuel does not leak from around fuel pipe, fuel grommet or fuel tank cap.• In case of fuel leakage there is a danger of fire. Stop using the machine immediately and request yourdealer to inspect or replace.Fuel Filter• Check periodically.• Do not allow dust to enter fuel tank.• A clogged filter (A) will cause difficulty in starting engineor abnormalities in engine performance.1. Using a wire bent into the shape of a hook, pull filterout through gas port, and inspect filter.2. When the filter is dirty, replace it.3. When the inside of the fuel tank is dirty, rinse the tankout with gasoline to clean it.AB0.65 mm (0.026 in.)BA