Cylinder Compression - KYMCO Grand Dink 250 Service Manual

3
. INSPECTION/ADJUSTMENT

CYLINDER COMPRESSION

Warm up the engine before compression test.
Remove the center cover and spark plug cap.
Remove the spark plug.
Insert a compression gauge.
Open the throttle valves fully and pushes the
starter button to test the compression.
Compression: 15±2kg/cm_
If the compression is low, check for the
following:
_Leaky valves
_Valve clearance to small
_Leaking cylinder head gasket
_Worn pistons
_Worn piston/cylinder
If the compression is high, it indicates that
carbon deposits have accumulated on the
combustion chamber and the piston head.
FUEL TANK CAP CABLE WIRE
Please inspect the fuel tank cap cable wire
slack when operate the fuel tank cap hardly.
SEAT CABLE WIRE
Please inspect the seat cable wire when
operate the seat hardly.
3-7
GRAND DINK 250
Compression Gauge
Relax Pull
Look Nut Adjust Nut
Relax
Look Nut Adjust Nut
Pull