KTM 450 SMR - Manual (Page 69)

TROUBLESHOOTING
67
Faults Possible cause Measure
Engine has no idle. Ignition system defective ಥ Have ignition system checked.
Engine does not speed up. Carburetor running over because float
needle dirty or worn ಥ Have carburetor checked.
Loose carburetor jets ಥ Have carburetor checked.
Electronic ignition adjustment defective ಥ Have ignition system checked.
Engine has too little power. Fuel feed interrupted ಥ Check tank vent.
ಥ Clean fuel tap.
ಥ Clean carburetor.
Air filter very dirty ಥ Clean the air filter. ( P. 59)
Exhaust system leaky, deformed or too lit-
tle glass fiber yarn filling in main silencer ಥ Check exhaust system for damage.
ಥ Change glass fiber yarn filling of main
silencer. (
P. 58)
Valve clearance too little ಥ Have valve clearance adjusted.
Electronic ignition adjustment defective ಥ Have ignition system checked.
Engine stalls or is popping into the carbu-
retor Lack of fuel ಥ Clean and check the fuel system and
carburetor.
Engine takes in bad air ಥ Check rubber sleeves and carburetor
for tightness.
Engine overheats. Too little coolant in cooling system ಥ Check the cooling system for leakage.
ಥ Check the coolant level. ( P. 55)
Too little air stream ಥ Switch off engine when standing.
Radiator fins very dirty ಥ Clean radiator fins.
Foam formation in cooling system ಥ Drain the coolant. ( P. 56)
ಥ Refill the coolant. ( P. 56)
Bent radiator hose ಥ Replace the radiator hose.
High oil consumption Engine vent hose bent ಥ Route the vent hose without bends or
replace it if necessary.
Engine oil level too high ಥ Check the engine oil level. ( P. 62)
Engine oil too thin (low viscosity) ಥ Change the engine oil and oil filter,
and clean the oil screen. (
P. 63)
Battery discharged Battery is not charged by generator ಥ Check electrical system.