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WARNING: When draining the fuel, be sure to stop the engine and make sure that the engine
cools down.
Just after stopping the engine, it may still be hot with possibility of burns,
inammabilityandre.
ATTENTION: When the machine is kept out of operation for a long time, drain up all fuel from the
fuel tank and carburetor, and keep it at a dry and clean place.
Fault location
Fault System Observation Cause
Engine not starting or with
difculty
Ignition system Ignition spark O.K. Fault in fuel supply or compression system, mechanical
defect
No ignition spark STOP-switch operated, wiring fault or short circuit, spark
plug or connector defective, ignition module faulty
Fuel supply Fuel tank lled Incorrect choke position, carburetor defective, fuel supply
line bent or blocked, fuel dirty
Compression No compression when
pulled over
Cylinder bottom gasket defective, crankshaft seals
damaged, cylinder or piston rings defective or improper
sealing of spark plug
Mechanical fault Starter not engaging Broken starter spring, broken parts inside of the engine
Warm start problems Tank lled ignition spark
existing
Carburetor contaminated, have it cleaned
Engine starts but dies Fuel supply Tank lled Incorrect idling adjustment, carburetor contaminated
Fuel tank vent defective, fuel supply line interrupted,
cable or STOP-switch faulty
Insufcient performance Several systems may
simultaneously be
affected
Engine idling poor Air lter contaminated, carburetor contaminated, mufer
clogged, exhaust duct in the cylinder clogged
Drain fuel from the fuel tank and carburetor according to the following –
procedure:
1) Remove the fuel tank cap, and drain fuel completely.
If there is any foreign matter remaining in the fuel tank, remove it
completely.
2) Pull out the fuel lter from the rell port using a wire.
3) Push the primer pump until fuel is drained from there, and drain fuel
coming into the fuel tank.
4) Put the lter to the fuel tank, and securely tighten the fuel tank cap.
5) Then, continue to operate the engine until it stops.
Remove the spark plug, and drip several drops of engine oil through the –
spark plug hole.
Gently pull the starter handle so that engine oil will spread over the engine, –
and attach the spark plug.
Attach the cover to the cutter blade. –
During storage, keep the rod horizontal or keep the machine upright with the –
blade edge oriented upward. (In this case, pay full attention to prevent the
machine from falling.)
Never store the machine with the cutter blade edge oriented downward.
Lubricating oil may spill out.
Keep the drained fuel in a special container in a well-ventilated shade. –
STORAGE
Attention after long-time storage
Before startup after long-time shutdown, be sure to replace oil (refer to P 19). Oil will deteriorate while the machine is kept out of –
operation.