Troubleshooting - Husqvarna TC 250 Owner's Manual

Faults
The engine cannot be cranked
(electric starter)
(TX 300)
Engine turns but does not start
Engine has no idle
Engine does not speed up
Possible cause
Operating error
Battery discharged
Main fuse blown
Starter relay faulty
Starter motor faulty
Operating error
Motorcycle was out of use for
a long time and there is old
fuel in the float chamber
Fuel feed interrupted
Spark plug oily or wet
Electrode distance (plug gap)
of spark plug too wide
Fault in ignition system
Kill switch cable in wiring har-
ness frayed, kill switch defec-
tive
The connector or ignition coil
is loose or oxidized
Water in carburetor or jets
blocked
Idling jet blocked
Adjusting screws on carbure-
tor distorted
Spark plug defective
Ignition system defective
Carburetor running over
because float needle dirty or
worn
Loose carburetor jets

20 TROUBLESHOOTING

Action
–
Carry out the start procedure.
( p. 32)
–
Recharge the battery.
–
Check the charging voltage.
–
Check the closed current.
–
Check the alternator.
–
Change the main fuse. (
–
Check the starter relay.
–
Check the starter motor.
–
Carry out the start procedure.
( p. 32)
–
Empty the carburetor float cham-
ber. ( p. 125)
–
Check the fuel tank breather.
–
Clean the fuel tap.
–
Check/set the carburetor compo-
nents.
–
Clean and dry the spark plug, or
change it if necessary.
–
Adjust the plug gap.
Guideline
(TC 250)
Spark plug electrode gap
0.60 mm (0.0236 in)
(TX 300)
Spark plug electrode gap
0.60 mm (0.0236 in)
–
Check the ignition system.
–
Check the kill switch.
–
Clean the connector and treat it with
contact spray.
–
Check/set the carburetor compo-
nents.
–
Check/set the carburetor compo-
nents.
– Carburetor – adjust the idle speed.
( p. 124)
–
Change the spark plug.
–
Check the ignition coil.
–
Check the spark plug connector.
–
Check/set the carburetor compo-
nents.
–
Check/set the carburetor compo-
nents.
( p. 111)
p. 113)
137