ZHEJIANG KAYO MOTOR CO., LTD.
www.kayomoto.com
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THE ENGINE ADJUSTMENT
IDLE SPEED ADJUSTMENT OF CARBURETOR
Throttle screw
Air screw
The idle speed of the carburetor can be adjusted
through the throttle screw and air screw.
Proceed as follows:
1.
Rotate the air screw clockwise until it reaches the
top of its stroke, and then reverse one and a quarter
of a turn;
2.
Adjust the throttle screw to ensure that the engine
can run at a certain speed when the throttle lever is
completely loosened;
3.
Adjust the throttle screw to reduce the engine speed
as much as possible;
4.
Adjust the air screw to increase the engine speed as
much as possible;
5.
Repeat the above steps until a satisfactory speed is
obtained;
6.
Check whether the throttle cable is working
properly.
DANGER
: Driving a motorcycle with a damaged throttle cable is undoubtedly a very dangerous
behavior. The normal throttle cable should have a free stroke of at least 10mm. Start the engine and
turn the handlebar left and right. If the engine stalls or accelerates due to the movement of the
handlebar, the throttle cable may be improperly adjusted or damaged. Make sure that the throttle
cable is normal before driving the motorcycle.
CLEAN THE CARBURETOR
KT250 carburetor oil drain bolt
The carburetor will leave a portion of fuel after every
ride. Therefore, the carburetor should be cleaned after
each ride to avoid the generation of grease stains and
affect the use of the carburetor.
The cleaning steps as follows:
1.
Place a container under the carburetor for receiving
fuel
2.
Turn off the fuel tank switch
3.
Unscrew the drain bolt of the carburetor and wait
for the fuel to flow out
4.
After the fuel is drained, screw the drain bolt back
