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TROUBLE CAUSE REMEDY
Engine cranks but doesn’t start. Operating error
Blown fuse for the fuel pump
The plug and socket connector on
the wiring harness is oxidized
Open fuel taps, tank fuel, you did not use choke. Pay atten-
tion to starting off information (see driving instructions).
Replace THE FUEL pump fuse
Remove the panel and fuel tank, clean the plug and socket
connector and spray with contact spray
Engine will not reach full power Fuel supply partically interrupted
Carburetors leaking
Air filter very dirty
The ignition curve for 80 octane is
activated
Check the fuel taps, run the fuel lines without kinks
Check vacuum hoses and venting hoses of carburetors for
correct position (no kinks)
Have the air filter replaced at an authorized KTM workshop.
Activate the ignition curve for 95 octane, if fuel with at least
RON 95 (USA = Premium PON 91) is being used
Engine overheats Insufficient cooling liquid
Radiator fins are extremely dirty
Foam forms in cooling system
Radiator hose is kinked or
damaged
Thermostat defective
Blown fan fuse
Refill cooling liquid (see maintenace work), check cooling
system for leaks
Clean radiator with water jet
Replace cooling liquid, use antifreezer with brand name
Run the radiator hose correctly or replace
Have the thermostat checked (opening temperature 75°C,
167°F) or replaced; contact an authorized KTM workshop
Replace fuse FAN
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