Makita RBC421L Instruction Manual

Also see for RBC421L: Original instruction

Contents

Makita RBC421L Instruction Manual Manual pdf 19 page image

19STORAGE– When keeping the machine in storage for a long time, drain fuel from the fueltank and carburetor, as follows: Drain all fuel from the fuel tank. Dispose ofproperly and in accordance with all local 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 covers the engine inside and tightenthe spark plug.– Clear dirt or dust from the cutter blade and outside of engine, wipe them witha oil-immersed cloth and keep the machine in a place 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 I-O switch operated, wiring fault or short circuit, sparkplug or connector defective, ignition module faultyFuel supply Fuel tank filled Incorrect choke position, carburetor defective, fuelsupply line 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, must be cleanedEngine starts but diesimmediatelyFuel supply Tank filled Incorrect idling adjustment, carburetor contaminatedFuel tank vent defective, fuel supply line interrupted,cable or I-O switch faultyInsufficient performance Several systemsmay simultaneouslybe affectedEngine idling poor Air filter contaminated, carburetor contaminated, mufflerclogged, exhaust duct in the cylinder cloggedDrain fuel Humidity