DAELIM S2 125, Service Manual

Page: 58 / 184

5-9
FUEL SYSTEM
PILOT SCREW ADJUSTMENT
●
Remove the carburetor maintenance cover.
(
⇨
3-3)
①
Turn the pilot screw clockwise until it seats lightly, then
back it out to the specification given (1
½
).
②
Warm up the engine to operating temperature (60
℃
).
③
Adjust the idle speed with the throttle stop screw.
IDLE SPEED : 1,700
±
100 rpm
④
Rev the engine up slightly from the idle speed and
make sure that engine speed rises and returns smoothly.
⑤
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
⅛
turn and
repeat steps
④
and
⑤
⑥
Readjust the idle speed with the throttle stop screw.
●
Install the carburetor maintenance cover.
•
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.
•
Tightening the pilot screw against its seat will
damage the seat.
•
If the engine cannot be adjusted by turning the pilot
screw within a
¼
turn, check for other engine
problems.
THROTTLE STOP SCREW
THROTTLE STOP SCREW THROTTLE STOP SCREW THROTTLE STOP SCREW
THROTTLE STOP SCREW THROTTLE STOP SCREW
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THROTTLE STOP SCREW THROTTLE STOP SCREW
THROTTLE STOP SCREW THROTTLE STOP SCREW THROTTLE STOP SCREW
THROTTLE STOP SCREW
THROTTLE STOP SCREW
PILOT SCREW
PILOT SCREW PILOT SCREW
PILOT SCREW PILOT SCREW
PILOT SCREW PILOT SCREW PILOT SCREW
PILOT SCREW
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PILOT SCREW PILOT SCREW
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PILOT SCREW