KYMCO Bet & Win 250 User Manual

3. INSPECTION/ADJUSTMENT
3-6
Bet & Win 2 50
VALVE CLEARANCE
Remove the cylinder head cover.
Turn the A.C. generator flywheel to the top
dead center (TDC) on the compression stroke
so that the “T” mark on the flywheel aligns
with the index mark on the left crankcase
cover.
Inspect and adjust valve clearance.
Valve Clearance: IN: 0.1mm
EX: 0.1mm
Loosen the lock nut and adjust by turning the
adjusting nut
Valve Wrench
CARBURETOR IDLE SPEED
Lift up the seat and remove the inspection
cover.
Warm up the engine before this operation.
Start the engine and connect a tachometer.
Turn the throttle stop screw to obtain the
specified idle speed.
Idle Speed: 1450±50rpm
When the engine misses or run erratic, adjust
the pilot screw.
Throttle Stop Screw
Pilot Screw
Feeler Gauge
• Inspect and adjust valve clearance while
the engine is cold (below 35℃ ).
＊
• Check the valve clearance again after
the lock nut is tightened.
＊
• The engine must be warm for accurate
idle speed inspection and adjustment.
＊
Cylinder Head Cover
Bolts
Top Dead Center
Valve Wrench
Special
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KYMCO Bet & Win 250 Specifications

General

Displacement	249.4 cc
Cooling System	Liquid-cooled
Fuel System	Carburetor
Transmission	CVT
Front Suspension	Telescopic fork
Front Brake	Disc
Rear Brake	Disc
Fuel Capacity	12 liters
Ignition	CDI
Width	770 mm
Height	1, 370 mm
Seat Height	780 mm
Engine Type	4-stroke, single-cylinder