20
Electrode gap
The electrode gap must be 0.5 mm.
Checking the ignition spark
- Press the loosened spark plug with the ignition cable
fi
rmly
connected against the cylinder using insulated pliers (not
near the spark plug opening).
- ON/OFF switch in the "
I
" (ON) position.
- Pull the starter cable hard.
If the function is correct, an ignition spark must be visible near
the electrodes.
CAUTION:
Do not touch the spark plug or plug cap if the engine is
running (high voltage).
Switch off the engine before starting any maintenance work.
A hot engine can cause burns. Wear protective gloves!
The spark plug must be replaced in case of damage to the
insulator, electrode erosion (burn) or if the electrodes are very
dirty or oily.
- Remove
the
fi
lter cover (see "Cleaning the air
fi
lter").
- Pull the plug cap (
G/1
) off the spark plug. Use only the
combination wrench supplied with the saw to remove the
spark plug.
CAUTION:
Use only the following spark plugs:
BOSCH WSR 6F
or
NGK BPMR 7A
.
Replacing the spark plug
Cleaning the air
fi
lter
F
G
1
- Remove
the
fi
lter cover (
E/1
) (2 screws).
- Loosen the screws on the air
fi
lter (
E/2
) and remove from
intake manifold.
- Loosen the screw on the pre
fi
lter cover (
E/3
) and remove.
- Remove
pre
fi
lter (
E/4
).
IMPORTANT:
Cover the intake opening with a clean cloth to prevent dirt
particles from getting into the carburetor.
- Pry apart the top and bottom of the air
fi
lter as shown in
Figure F.
CAUTION:
To prevent injury to the eyes, do NOT blow out dirt particles!
Do not use fuel to clean the air
fi
lter and pre
fi
lter
.
E
2
4
1
3
- Clean the air
fi
lter and pre
fi
lter with a soft brush.
- If
the
fi
lter is very dirty, clean it in lukewarm water with dish-
washing detergent.
- Let the air
fi
lter
dry completely
.
- Put the top and bottom sections back together.
-
Before reinstalling the air
fi
lter, check the intake opening and
remove any dirt particles. If there are any, remove them with
a brush.
Clean frequently (several times a day) when working in very
dusty or dirty conditions. Full engine power is possible only with
a clean air
fi
lter and pre
fi
lter!
Important:
For sawing dry wood and working on dusty ground
we recommend using a
Robko
fl
ok air
fi
lter
(available as an
accessory). The Robko
fl
ok
fi
lter keeps out even the smallest
dust particles.
CAUTION:
If the air
fi
lter or pre
fi
lter becomes damaged,
replace immediately!
Pieces of cloth or large dirt particles can destroy the en-
gine!
H
0,5 mm
