19 TROUBLESHOOTING
87
Faults
Possible cause
Action
Engine turns but does not start
Operating error
–
Go through the steps of starting the engine.
Motorcycle was out of use for a long
time and there is old fuel in the float
chamber
–
Empty the carburetor float chamber.
x
Fuel feed interrupted
–
Check the fuel tank breather.
–
Clean the fuel tap.
–
Check/set the carburetor components.
Spark plug oily or wet
–
Clean and dry the spark plug, or change it if
necessary.
Electrode distance (plug gap) of spark
plug too wide
–
Adjust the plug gap.
Guideline
(125 TC EU)
Spark plug electrode gap
0.60 mm (0.0236 in)
(250 TC EU)
Spark plug electrode gap
0.60 mm (0.0236 in)
Fault in ignition system
–
Check the ignition system.
x
Kill switch cable in wiring harness
frayed, kill switch defective
–
Check the kill switch.
x
The connector or ignition coil is loose
or oxidized
–
Clean the connector and treat it with contact
spray.
Water in carburetor or jets blocked
–
Check/set the carburetor components.
Engine has no idle
Idling jet blocked
–
Check/set the carburetor components.
Adjusting screws on carburetor dis-
torted
–
Carburetor - adjust the idle speed.
x
Spark plug defective
–
Change the spark plug.
Ignition system defective
–
Check the ignition coil.
x
–
Check the spark plug connector.
x
Engine does not speed up
Carburetor running over because float
needle dirty or worn
–
Check/set the carburetor components.
Loose carburetor jets
–
Check/set the carburetor components.
Fault in ignition system
–
Check the ignition system.
x
Engine has too little power
Fuel feed interrupted
–
Check the fuel tank breather.
–
Clean the fuel tap.
–
Check/set the carburetor components.
Air filter very dirty
–
Clean the air filter and air filter box.
x
Exhaust system leaky, deformed or
too little glass fiber yarn filling in main
silencer
–
Check exhaust system for damage.
–
Change the glass fiber yarn filling of the main
silencer.
x
Fault in ignition system
–
Check the ignition system.
x
Diaphragm or reed valve housing
damaged
–
Check the diaphragm and reed valve housing.
Engine stalls or is popping into the
carburetor
Lack of fuel
–
Turn handle
1
of the fuel tap to the
ON
posi-
tion. (Figure L01808-10
–
Refuel. (
Engine takes in bad air
–
Check the intake flange and carburetor for tight-
ness.
The connector or ignition coil is loose
or oxidized
–
Clean the connector and treat it with contact
spray.
Engine overheats
Too little coolant in cooling system
–
Check the cooling system for leakage.
–
Check the coolant level. (
Too little air stream
–
Switch off engine when stationary.
Radiator fins very dirty
–
Clean the radiator fins.
Содержание 125 TC EU
Страница 1: ...OWNER S MANUAL 2014 125 TC EU 250 TC EU Art no 3402001en ...
Страница 2: ......
Страница 86: ...16 SERVICE WORK ON THE ENGINE 84 Start the engine and check that it is oil tight ...