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Electrode gap
The electrode gap must be .020" (0.5 mm).
Checking the ignition spark
- Press the loosened spark plug with the ignition cable firmly
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.
Cleaning the air filter
E
F
- Remove the filter cover (E/1) (2 screws).
CAUTION:
Press the choke (E/2) up to shut the choke valve and to prevent
dirt particles from entering the carburetor.
- Pull the air filter (E/3) off the carburetor.
- Cover the carburetor with a clean cloth.
- Grasp the top and bottom sections of the air filter as shown
in figure F and pull apart.
CAUTION: To prevent injury to the eyes, do NOT blow out
dirt particles!
Do not use fuel to clean the air filter.
- Clean the air filter with a soft brush.
- If the filter is very dirty, clean it in lukewarm water with
dishwashing detergent.
- Let the air filter dry completely.
- Put the top and bottom sections back together.
- Before re-installing the air filter, check the choke valve for dirt
particles. If there are any, remove them with a brush.
If the filter is very dirty, clean it frequently (several times a day),
because only a clean air filter provides full engine power.
CAUTION: Replace damaged air filters immediately.
Pieces of cloth or large dirt particles can destroy the
engine!
G
Replacing the spark plug
STOP
1
2
3
1
H
.020" (0.5 mm).
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 filter cover (see "Cleaning the air filter" above,
Fig. E/1).
- 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:
NGK BPMR 6F or CHAMPION RDJ-7Y.
STOP