18
WARNING: When draining the fuel, be sure to stop the engine and confirm that the engine cools
down.
Just after stopping the engine, it may still hot with possibility of burns, inflammability and fire.
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
– Drain up 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 filter from the refill port using a wire.
3) Push the primer pump until fuel is drained from there, and drain fuel
coming into the fuel tank.
4) Reset the filter 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.
– During storage, keep the rod horizontal or keep the machine upright with the
branch edge oriented upward. (In this case, pay full attention to prevent the
machine from falling.)
– Keep the drained fuel in a special container in a well-ventilated shade.
Drain fuel
Humidity
STORAGE
Attention after long-time storage
– Before startup after long-time shutdown, be sure to replace oil (refer to P 15). Oil will deteriorate while the machine is kept out of
operation.
Fault
System
Observation
Cause
Engine not starting or with
difficulty
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 filled
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 filled ignition spark
existing
Carburetor contaminated, have it cleaned
Engine starts but dies
Fuel supply
Tank filled
Incorrect idling adjustment, carburetor contaminated
Fuel tank vent defective, fuel supply line interrupted,
cable or STOP-switch faulty
Insufficient performance
Several systems may
simultaneously be
affected
Engine idling poor
Air filter contaminated, carburetor contaminated, muffler
clogged, exhaust duct in the cylinder clogged
