Setting The Idle Speed; Setting The Carburetor - SHERCO 250 SE RACING Bedienungsanleitung

MOTOR SETTINGS

SETTING THE IDLE SPEED

SETTING THE CARBURETOR

D
C
B
A
108
- The idle speed is adjust with adjusting screw
- The idle mixture is adjusted with the idle air
1
adjusting screw
Start the bike and allow it to reach operating
2
temperature.
Adjust the idle speed by turning the idle screw
2000 +/- 100 rpm
Close the adjust air screw all the way and turn it
back to 1 turn ¼.
Idle speed
Idle air adjusting open
How the opening of the throttle slide influences
1
performance:
The composition of the mixture (Air-Gas) is a function
2
of the opening of the slide:
• A: Idle range
From 0 to ⅛ opening of the throttle slide, this range
is regulated by the idle screw
• B: Transition range
From ⅛ to ¼ opening of the throttle slide, this range
is regulated by the idle jet and the shape of the slide.
• C: Mid-range
From ¼ to ¾ opening of the throttle slide, this
range is regulated by the needle valve (shape and
position). In the lower range, the idle circuit, and in
the higher range, the main jet take into account the
control of the motor.
• D: Full load
From ¾ to full throttle slide opening, this range
is controlled by the main jet and the needle jet.
.
2
2000 +/- 100 rpm
1T ¼
and the air screw .
1
.
1
1
2