19– When storing the equipment for a long period of time, drain all the fuel fromthe fuel tank and carburetor. To do this, simple drain all of the fuel from thefuel tank. Dispose of the drained fuel in accordance with local applicable laws.– Remove the spark plug and add a few drops of oil into the spark plug hole.Then, pull the starter gently so that oil coats the inside of the engine, thentighten the spark plug.– Clean any dirt or dust from the cutter blade and outside of the engine, andwipe them with a oil-immersed cloth. Store the equipment in a dry place.Maintenance scheduleTroubleshootingStorageGeneral Engine assembly, screws and nuts Visual inspection for damage and tightnessCheck for general condition and securityAfter each refuelling Control leverI-Stop Switch (on/off)/Start-Stop 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 necessaryInspect, and clean the opening if necessaryQuarterly Suction headFuel tankTo be replacedTo be cleanedShutting down procedure Fuel tankCarburetorEmpty fuel tankOperate until engine runs out of fuelFault System Observation CauseEngine doesn’t start, or isdifficult to startIgnition system Ignition spark O.K. Fault in fuel supply or compression system, mechanicaldefectNo ignition spark I-Stop Switch (on/off)/Start-Stop Switch operated, wiringfault or short circuit, spark plug or connector defective,ignition module faultyFuel supply Fuel tank filled Incorrect choke position, carburetor defective, fuelsupply line bent or blocked, fuel dirtyCompression 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 the engineWarm start problems Tank filled. Ignitionspark O.K.Carburetor contaminated, must be cleanedEngine starts but dies Fuel supply Tank filled Incorrect idling adjustment, carburetor contaminatedFuel tank vent defective, fuel supply line interrupted,cable or I-Stop Switch (on/off)/Start-Stop Switch faultyInsufficient performance Several systemsmay simultaneouslybe affectedEngine idling poor Air filter contaminated, carburetor contaminated, mufflerclogged, exhaust duct in the cylinder cloggedDrain fuel Humidity