Husqvarna 580BFS Owners Manual - Page 21

MAINTENANCE Air intake screen Check that the air intake is not blocked on all sides including the underside, for example, by leaves or rubbish. A clogged air intake reduces the machine's blowing capacity and increases the engine's working temperature, which can result in engine failure. Stop the engine and remove the object. CAUTION! Always use the recommended spark plug type! Use of the wrong spark plug can damage the piston/ cylinder. Air filter The air filter must be regularly cleaned to remove dust and dirt in order to avoid: • Carburettor malfunctions • Starting problems • Loss of engine power • Unnecessary wear to engine parts • Excessive fuel consumption. Clean the filter every 40 hours, or more regularly if conditions are exceptionally dusty. Avoid contact with hot surfaces on muffler, cylinder etc. Contact can result in burns to the skin. Cleaning the air filter WARNING! Never use the blower if the ! screen is not in place. Before use, check that the screen is in place and undamaged. Spark plug 570, 580 - BTS, BFS • Loosen the four fasteners holding the air filter cover and remove the filter. Wash the prefilter in warm soapy water. The spark plug condition is influenced by: • Incorrect carburetor adjustment. • An incorrect fuel mixture (too much or incorrect type of oil). • A dirty air filter. These factors cause deposits on the spark plug electrodes, which may result in operating problems and starting difficulties. Clean the outside of the spark plug. Remove it and check the electrode gap. Adjust the gap to 0,6-0,7 mm, or replace the spark plug. Check that the spark plug is fitted with a suppressor. 0,6-0,7 • Tap the paper filter against a hard surface to shake off the dust. If the paper filter is still dirty it should be replaced with a new one. NOTE! Do not oil the filter. 1154432-49 Rev. 1 2011-06-28 English - 21