DAELIM HISTORY 125 User Manual

20-2
TROUBLESHOOTING
ENGINE STALLS, HARD TO START, ROUGH IDLING
CAUSE OF TROUBLE
·No fuel to fuel tank.
·Clogged fuel tube.
·Clogged float valve.
·Clogged fuel tank cap.
·Clogged fuel strainer.
·Disconnected or damaged fuel pump
negative pressure tube.
·Contaminated spark plug.
·Using spark plug with an incorrect
heat range.
·Faulty or contaminated spark plug.
·Faulty A.C generator.
·Faulty ignition coil.
·Disconnected or short high tension cord.
·Faulty ignition switch.
·Faulty pluse generator.
·Faulty CDI unit.
·Worn cylinder or piston ring.
·Leaking cylinder gasket.
·Faulty valve clearance adjustment.
·Faulty A.C generator.
·Faulty CDI unit.
·Lean fuel mixture.
·Rich fuel mixture.
·Faulty carburetor insulator tightening.
·Faulty carburetor insulator O-ring.
·Faulty insulator band tightening.
·Faulty insulator.
·Lean fuel mixture.
·Rich fuel mixture.
·Slow circuit clogged.
Open the drain screw, and check fuel
flow to the carburetor.
Check the spark plug.
Insert the plug into cap, and check
sparks.
Measure the cylinder compression.
(Using a compression gauge.)
Check the ignition timing.
Check the carburetor pilot screw
Check the intake air leak in the
connection part of carburetor insulator.
Check for continuity between auto
bystarter terminals.
Remove the auto bystarter from the
carburetor, check the starter valve.
Starter valve operates normally.
Continuity
Not leak
Adjustment normal
Correct
Compression normal
Sparks normal
Not contaminated or not discolored
Fuel is supplied
Fuel not supplied to
the carburetor.
Contaminated or
discolored.
Weak or intermittent
sparks.
Low or no cylinder
compression.
Incorrect
Misadjustment
Leak
No continuity
Starter valve won’t
operate.

DAELIM HISTORY 125 Specifications

General

Brand	DAELIM
Model	HISTORY 125
Category	Scooter
Language	English