18.2 POOR PERFORMANCE AT LOW AND IDLE SPEEDSN.G.O.K.CHECK carburetor N.G.AIR SCREW ADJUSTMENTO.KCHECK FOR LEAKING N.GINTAKE PIPEO.K.PERFORM SPARK TESTWEEK OR INTERMITTENTSPARKPossibilityFaulty CDI unit or pulse generatorImproperly adjusted air screwDeteriorated insulator o-ringLoose carburetorLoose or disconnected ignition system wiresFaulty ,carbon or wet fouled spark plugFaulty alternatorFaulty CDI unitFaulty ignition switchFaulty ignition coilFaulty pulse generatorBroken or shorted spark plug wireFaulty engine stop switch18.3 POOR PERFORMANCE AT HIGH SPEEDN.G.CHECK IGNITION TIMINGO.K.CHECK FUEL TUBE AT FUEL FLOWRESTRICTEDCARBURETORFUEL FLOWS FREELYREMOVE CARBURETOR CLOGGEDCHECK FOR CLOGGED JETSNOT CLOGGEDCHECK AIR CLEANER DIRTYFILTER ELEMENTPossibilityFaulty CDI unitFaulty pulse generatorLack of fuel in tankClogged fuel lineClogged fuel valveLogged fuel tank breather holeClean with high pressure air gunClean the filterCHECK IGNITION TIMING
