SPARK PLUG
● Remove the plug maintenance cover.
● Remove the spark plug cap and disassemble the plug.
● Check the plug for damage, contamination or deposits.
● If the spark plugs are severely contaminated or
damaged, raplace with new ones. If the plugs can be
reused after removing only the carbon, use plug cleaner
and wire brush to clean the plugs.
● Always use a feeler gauge to check the gap.
SPARK PLUG GAP : 0.6~0.7mm
•Make sure there is no dirt or debris on the seat of the
spark plug hole before inserting the spark plug.
•To prevent damage to the cylinder head, hand-tighten
the spark plug before using a wrench to tighten to the
specified torque.(torque : 14kgf·m)
•Do not overtighten the spark plug.
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.
•The maximum reading is usually reached within 4~7
seconds.
COMPRESSION PRESSURE : 10kg/cm
2
(600rpm)
● If the pressure is low, check the following:
-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.
TOOL : COMPRESSION GAUGE
2-5
INSPECTIONS/ADJUSTMENTS
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