18
TROUBLE-SHOOTING
Note: The services of inspection and maintenance for the items in parens in "Countermeasures" shall be submitted to the
official staff qualified for the portable fire fighting pumps or to our special agents.
ENGINE
Condition
Cause / Remedy
Excessive suction of fuel
Possibility of auto choke irregularity. Turn the throttle fully to the "SLOW"
side, and perform startup operation again.
《
Possibility of irregularity in the carburetor float and needle valve.
》
Fuel system
Irregular fuel
Confirm that gasoline becomes old or is mixed with water.
If necessary, replace it with new one.
Ignition plug
Confirm that the ignition plug is loosened, the electrode becomes dirty or
that the gap is 0.7 mm or more.
If necessary, clean the plug, adjust the gap, and retighten securely.
Irregular magnet
《
Possibility of irregularity in the flywheel magneto coil, CDI coil unit and
ignition coil.
》
Confirm that there in no disconnection.
If necessary, perform correct connection according to the wiring diagram.
Open the fuse box on the operation panel, and confirm that the fuse blows
out or not.
If it blows out, replace it with a new one.
Electric system
Others
Set the main switch to "RUN", and confirm that LED of Rabbit monitor
battery voltage display goes on.
If it is on, charge the battery (only in (S) specification).
Dif
ficult st
artup
Decompressor
Confirm that the decompressor is not loosened. If loosened, tighten it
securely.
If the recoil starter is hard to pull, push the decompressor.
Excessive or irregular fuel
Refer to "Difficult startup, Electric system".
Insufficient fuel suction
Confirm that the fuel tank cap air orifice and fuel passage is not clogged.
If clogged, clean it.
Irregular rot
a
tion
Ignition plug
Refer to "Difficult startup, Electric system".
Worn-out parts
《
Possibility of wear in the cylinder, piston and piston ring.
》
Knocking
《
Possibility of cylinder overheating and knocking because of irregularity
in the cooling system.
》
Abnormal noise
Partial operation
Partial operation may occur because of irregular explosion if gasoline is old
and the ignition plug is irregular.
Refer to "Difficult startup, Fuel system, Electric system".
《
Possibility of excessive carbon accumulation on the cylinder head and
piston head.
》
《
Possibility of clogging in the muffler inside and exhaust port.
》
《
Possibility of clogging in the cooling water passage.
》
Abnormal overheating
of cylinder head
《
Possibility of irregular ignition period of the ignition plug.
》
