Husqvarna 128L Owners Manual - Page 18

MAINTENANCE Air filter Maintenance schedule Below you will find some general mainte- nance instructions. The air filter must be regularly cleaned to remove dust and dirt in order to avoid: S Carburetor malfunctions S Starting problems S Loss of engine power S Unnecessary wear to engine parts S Excessive fuel consumption Clean the filter every 25 hours, or more regularly if conditions are exceptionally dusty. Cleaning the air filter Remove the air filter cover and take out the filter. Wash it clean in warm, soapy water. Rinse thoroughly. Ensure that the filter is dry before refitting it. An air filter that has been in use for a long time cannot be cleaned completely. The filter must therefore be replaced with a new one at regular intervals. A damaged air filter must always be replaced. Bevel gear (128L) The bevel gear is filled with the right quantity of grease at the factory. However, before using the machine you should check that the bevel gear is filled three--quarters full with grease. Use HUSQVARNA special grease. The grease in the bevel gear does not normally need to be changed except if repairs are carried out. Daily maintenance S Check throttle trigger and throttle trigger lockout function. S Check that the stop switch works correctly. S Check that there are no fuel leaks from the engine, tank or fuel lines. S Check that the cutter does not rotate when the engine is idling. S Clean the outside of the machine. S Check that the harness is not damaged. S Check that the blade guard is not dam- aged or cracked. S Replace the blade guard if it is exposed to impact or is cracked. S A non--balanced trimmer head induces heavy vibrations that may damage the machine. S Check that nuts and screws are tight. S Check that the screws that hold the bevel gear are tight. S Check that the trimmer head is tight. Weekly maintenance S Check the starter and starter cord. S Clean the carburetor area. S Clean the outside of the spark plug. Re- move it and check the electrode gap. Adjust the gap to 0.024″ (0.6 mm), or replace the spark plug. Use resistor spark plug Champion RCJ--8Y or equivalent. S Clean the cooling fins on the cylinder and check that the air intake near the starter is not blocked. S Check that the bevel gear is filled with grease up to 3/4 full. Use special grease. S Clean the air filter. Monthly maintenance S Clean the fuel tank. S Clean the outside of the carburetor and the space around it. S Clean the fan and the area around it. S Check fuel lines for cracks or other dam- age. Change if necessary. S Change the fuel filter in fuel tank. S Check the clutch, clutch springs and the clutch drum for wear. Replace if necessary. S Check electrical wires and connections. S Replace the spark plug. Use resistor spark plug Champion RCJ--8Y or equivalent. S Change the air filter. 545196750 Rev. 3 2/17/09 English--- 18