DAELIM BESBI SC125 -, Service Manual

Page: 53 / 188

5-9
FUEL SYSTEM
INSPECTION
Check the carburetor insulator O-ring for wear or
damage.
Install in the reverse order of removal.
PILOT SCREW ADJUSTMENT
Remove the luggage box.
Turn the pilot screw clockwise until it seats lightly, then
back it out to the specification given (1
).
Warm up the engine to operating temperature (60 ).
Adjust the idle speed with the throttle stop screw.
IDLE SPEED : 1,600 100 rpm
NOTE
The pilot screw is factory pre-set. Adjustment is not
necessary unless the caburetor is overhauled or a new
pilot screw is installed.
Before adjusting the pilot screw, check the following
items.
-Fuel system, electrical system for troubling.
-Spark plug for cleaning and gap adjusting.
-Valve clearance for adjusting.
CAUTION
Be sure of tightening the pilot screw, not to damaged
the pilot screw seat.
Rev the engine up slightly from the idle speed and
make sure that engine speed rises and returns smoothly.
When turning the throttle stop screw in gradually until
the engine speed drops 1,000rpm, make sure that the
engine does not run.
Adjust by turning the pilot screw with a turn and
repeat steps and
CAUTION
If the engine cannot be adjusted by turning the pilot
screw within a
turn, check for other engine
problems.
Readjust the idle speed with the throttle stop screw, if
necessary.
Install the luggage box.