Carburetor - Adjusting The Idle Speed; Emptying The Carburetor Float Chamber - KTM 65 SX 2009 Repair Manual

31/CARBURETOR

Carburetor - adjusting the idle speed

18.11

Emptying the carburetor float chamber

18.12
Danger
Fire hazard Fuel can easily catch fire.
–
Never fill up the vehicle near open flames or burning cigarettes, and always switch off the engine first. Be careful that no
fuel is spilt, especially on hot vehicle components. Clean up spilt fuel immediately.
–
Fuel in the fuel tank expands when warm and can escape if the tank is overfilled. See specifications on filling up with fuel.
Warning
Danger of poisoning Fuel is poisonous and a health hazard.
–
Avoid contact between fuel and skin, eyes and clothing. Do not inhale fuel vapors. If fuel gets into your eyes, rinse immedi-
ately with water and contact a doctor. Wash affected skin areas immediately with soap and water. If fuel is swallowed, con-
tact a doctor immediately. Change clothing that has come into contact with fuel. Store fuel in a suitable canister according
to regulations and keep it out of the reach of children.
Warning
Environmental hazard Improper handling of fuel is a danger to the environment.
–
Do not allow fuel to get into the ground water, the ground, or the sewage system.
–
Screw in idle air adjusting screw
position.
Guideline
Idle air adjusting screw
Open
–
Run the engine until warm.
Guideline
Warm-up time
700457-01
Danger
Danger of poisoning Exhaust gases are poisonous and can result in uncon-
sciousness and/or death.
–
When running the engine, always make sure there is sufficient venti-
lation, and do not start or run the engine in a closed space without an
effective exhaust extraction system.
–
Adjust the idle speed with the adjusting screw
Guideline
Choke function deactivated – The choke lever is pushed up all the way.
Idle speed
–
Turn idle air adjusting screw
begins to fall.
–
Note the position and turn the idle air adjusting screw slowly counterclockwise until
the idle speed falls again.
–
Adjust to the point between these two positions with the highest idle speed.
Info
If the engine speed rises considerably, reduce the idle speed to a normal
level and repeat the above steps.
If the procedure described here does not lead to satisfactory results, the
cause may be a wrongly dimensioned idling jet.
If you can turn the idle air adjusting screw to the end without any change of
engine speed, you need to install a smaller idling jet.
After changing the idling jet, start from the beginning with the adjusting
steps.
Following extreme air temperature or altitude changes, adjust the idle speed
again.
all the way and turn it to the specified basic

3.5 turns
≥ 5 min
.

1,400... 1,500 rpm
slowly in a clockwise direction until the idle speed

93