18
WARNING: When draining the fuel, be sure to stop the engine and con
fi
rm that the engine cools
down.
The engine is still hot just after stopping the engine. Wait until it cools down,
otherwise it may cause burns or
fi
re.
When the machine is kept out of operation for a long time, perform the
followings:
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
fi
lter from the re
fi
ll 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
fi
lter to the fuel tank, and securely tighten the fuel tank cap.
5) Then, continue to operate the engine until it stops.
Remove the cutting tool.
–
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.
–
Drain fuel
Humidity
STORAGE
Attention after long-time storage
Before startup after long-time storage, be sure to replace engine oil (refer to “REPLACEMENT OF ENGINE OIL”). Oil will deteriorate
–
while the machine is kept out of operation.
Fault
System
Observation
Cause
Engine not starting or with
dif
fi
culty
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
fi
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
fi
lled ignition spark
existing
Carburetor contaminated, have it cleaned
Engine starts but dies
Fuel supply
Tank
fi
lled
Incorrect idling adjustment, carburetor contaminated
Fuel tank vent defective, fuel supply line interrupted,
cable or STOP-switch faulty
Insuf
fi
cient performance
Several systems may
simultaneously be
affected
Engine idling poor
Air
fi
lter contaminated, carburetor contaminated, muf
fl
er
clogged, exhaust duct in the cylinder clogged
