G120F/G160F/G200F Part II Description of maintenance
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2. Hard starting
Cylinder compression check
1) Remove spark plug cap and spark plug.
2) Install a compression gauge in the spark plug hole,
crank the engine several times with the recoil starter
and measure cylinder compression
Compression 6.0～8.5kg/cm
2
(600rpm)
②Remove the spark plug and
check for wet electrodes
③ Put the spark plug on the
cap, ground the electrode,
then, pull the starter and check
Measure cylinder compression:
put the compression gauge on t
spark plug hole and pull starter
several times, check cylinder
securely and restart the engine
according to the starting
procedure.
●Add fuel and restart the engine
● Check for blockage of the fuel tube or
● Check for blockage in the carburetor
● Dry electrodes and restart, taking care
that the choke is not closed too much.
● If flooding is severe, check if fuel
● Perform the spark test again using a
● Check for volt leakage caused by
damaged high tension wire insulation
● Check ignition coils (rea
● Check that the tappet clearance is
correct.
● Check whether cylinder head is
tightened appropriately.
● Check for deposits in the
combustion chamber.
● Check whether cylinder head
gasket, valve cone and valve seat
are correct
● Check for worn piston, piston rings
or cylinder.
Dry
Wet
Check the fuel level in the
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