Poor Performance At Low And Idle Speeds; Poor Performance At High Speed - DAELIM ET-250 Service Manual

18.2 POOR PERFORMANCE AT LOW AND IDLE SPEEDS

CHECK IGNITION TIMING
O.K.
CHECK carburetor
AIR SCREW ADJUSTMENT
O.K
CHECK FOR LEAKING
INTAKE PIPE
O.K.
PERFORM SPARK TEST
SPARK

18.3 POOR PERFORMANCE AT HIGH SPEED

CHECK IGNITION TIMING
O.K.
CHECK FUEL TUBE AT
RESTRICTED
CARBURETOR
FUEL FLOWS FREELY
REMOVE CARBURETOR
CHECK FOR CLOGGED JETS
NOT CLOGGED
CHECK AIR CLEANER
FILTER ELEMENT
N.G.
N.G.
N.G
WEEK OR INTERMITTENT
N.G.
FUEL FLOW
CLOGGED
DIRTY
Faulty CDI unit or pulse generator
¡¹
¡¹ Improperly adjusted air screw
¡¹ Deteriorated insulator o-ring
¡¹ Loose carburetor
¡¹ Loose or disconnected ignition system wires
¡¹ Faulty ,carbon or wet fouled spark plug
¡¹ Faulty alternator
¡¹ Faulty CDI unit
¡¹ Faulty ignition switch
¡¹ Faulty ignition coil
¡¹ Faulty pulse generator
¡¹ Broken or shorted spark plug wire
¡¹ Faulty engine stop switch
¡¹ Faulty CDI unit
¡¹ Faulty pulse generator
¡¹ Lack of fuel in tank
¡¹ Clogged fuel line
¡¹ Clogged fuel valve
¡¹ Logged fuel tank breather hole
¡¹ Clean with high pressure air gun
Clean the filter
¡¹
Possibility
Possibility