18STORAGE– When the machine is in storage for a long time, drain fuel from the fuel tankand carburetor, as follows: Drain all fuel from the fuel tank. Dispose ofproperly and in accordance with all local laws.– Remove the spark plug and a few drops of oil into the spark plug hole. Then,pull the starter gently, so that oil covers the engine inside and tighten thespark plug.– Clear dirt or dust from the cutter blade or the nylon cutting head and outsideof engine, wipe them with a oil-immersed cloth and keep the machine in aplace as dry as possible.Maintenance scheduleGeneral Engine assembly, screws andnutsVisual inspection for damage and tightnessCheck for general condition and securityAfter each refuelling Control leverI-O-switchFunctional checkFunctional checkDaily Air filterCooling air ductCutting toolIdling speedTo be cleanedTo be CleanedCheck for damage and sharpnessInspection (cutting tool must not move)Weekly Spark plugMufflerInspection, replace if necessaryCheck and if necessary clean the openingQuarterly Suction headFuel tankTo be replacedTo be cleanedShuting down procedure Fuel tankCarburetorEmpty fuel tankOperate until engine runs out of fuelFault locationFault System Observation CauseEngine not starting or withdifficultyIgnition system Ignition spark O.K. Fault in fuel supply or compression system, mechanicaldefectNo ignition spark STOP-switch operated, wiring fault or short circuit, sparkplug or connector defective, ignition module faultyFuel supply Fuel tank filled Incorrect choke position, carburetor defective, fuel supplyline bent or blocked, fuel dirty.Compression No compression whenpulled overCylinder bottom gasket defective, crankshaft sealsdamaged, cylinder or piston rings defective or impropersealing of spark plugMechanical fault Starter not engaging Broken starter spring, broken parts inside of the engineWarm start problems Tank filled ignition sparkexistingCarburetor contaminated, have it cleanedEngine starts but dies Fuel supply Tank filled Incorrect idling adjustment, carburetor contaminatedFuel tank vent defective, fuel supply line interrupted,cable or STOP-switch faultyInsufficient performance Several systemsmay simultaneouslybe affectedEngine idling poor Air filter contaminated, carburetor contaminated, mufflerclogged, exhaust duct in the cylinder cloggedDrain fuel Humidity