Cylinder Compression Pressure - DAELIM S2-250 Service Manual

INSPECTIONS / ADJUSTMENTS
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•Inspect and adjust the valve clearance when the
engine is cool. (under 35 ° C / 95 ° F)
•Remove the cylinder head cover.
•Turn the flywheel counterclockwise, and align the
"T" mark on the flywheel with the index mark on
the RH. crank case cover.
•The piston at this time must be at the top dead center
of the compression stroke.
● Measure valve clearance with a feeler gauge.
VALVE CLEARANCE : Intake : 0.1mm
● Loosen the lock nut with a valve wrench, and set valve
clearance to a prescribed level by turning the adjusting
screw with a valve adjusting wrench.
● After setting clearance to the prescribed level, hold the
adjuster screw with a valve adjusting wrench, and
tighten the lock nut.
TORQUE VALUES : 1.1kgf·m
TOOLS : WRENCH 8X9mm
ADJUSTING WRENCH B
FEELER GAUGE
● Measure the valve clearance again.
● Install the cylinder head cover and tighten the bolts.
TORQUE VALUES : 1.0 kgf·m

CYLINDER COMPRESSION PRESSURE

● Start and warm up the engine.
● Remove the plug maintenance cover.
● Stop engine, and remove the spark plug cap and spark
plug.
● Install a compression gauge.
● Open the throttle completely, and crank the engine with
the starter motor until the gauge reading rising.
TOOL : COMPRESSION GAUGE
•The maximum reading is usually reached within 4~7
seconds.
COMPRESSION PRESSURE : 15±2 kgf/cm
● If the pressure is low, check the following:
-Inadequate valve clearance adjustment
-Valve leakage
-Leakage from the cylinder head gasket
-Piston/cylinder worn
● If pressure is high, check the following:
-Carbon deposits on the piston head, and cylinder head.
Exhaust : 0.1mm
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