Linhai 2005 ATV 260, Service Manual

Page: 165 / 341

CHAPTER 3B ENGINE 50cc/80cc
ATV SERVICE MANUAL07.0
CHAPTER 3B ENGINE PAGE 3B - 59 -
Carburetor Adjustment
·
It is generally not necessary to adjust the mixture
screw on the side of the carburetor. This screw is
preset at the factory and will have little affect on the
performance of the carburetor.
If this screw has been removed for cleaning of the
carburetor, it should be reset carefully.
The standard setting is 2 turns out + -1/4 turn.
·
To set this position, run the engine until warm and
allow it to idle. Turn the screw in or out a little at a
time and measure the idle RPM. The correct
setting is achieved when the idle speed is
maximized.
Adjust the idle speed of the engine once the
engine had been warmed up.
Set the warm idle speed to 1or–
190RPM.
Check for engine return to idle speed after running
at part throttle.
Make sure that the throttle cable allows the throttle
control plate return to the stop screw.
If needed, readjust the mixture screw to help
stabilize idle performance.