17
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.
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) Pulloutthefuellterfromtherellportusingawire.
3) Push the primer pump until fuel is drained from there, and drain fuel coming into the fuel tank.
4) Puttheltertothefueltank,andsecurelytightenthefueltankcap.
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. –
In general, store the machine in horizontal position, or if it is not possible, place the machine as the engine comes below the cutting tool. –
Otherwise engine oil may leak from inside. Pay full attention how to store the machine to prevent the machine from falling. Otherwise it may
result in personal injury.
Keep the drained fuel in a special container in a well-ventilated shade. –
Attention after long-time storage
Before startup after long-time shutdown, be sure to replace oil (refer to P 14). Oil will deteriorate while the machine is kept out of –
operation.
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 Fueltanklled 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 Tanklledignitionspark
existing
Carburetor contaminated, have it cleaned
Engine starts but dies Fuel supply Tanklled Incorrect idling adjustment, carburetor contaminated
Fuel tank vent defective, fuel supply line interrupted,
cable or STOP-switch faulty
Insufcientperformance Several systems may
simultaneously be
affected
Engine idling poor Airltercontaminated,carburetorcontaminated,mufer
clogged, exhaust duct in the cylinder clogged
STORAGE