Cleaning the air filter
2 
4
1
3 | STOP |
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F
-Remove the filter cover (F/1) (2 screws).
-Loosen the screws on the air filter (F/2) and remove from intake manifold.
-Loosen the screw on the prefilter cover (F/3) and remove.
-Remove prefilter (F/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 filter as shown in Figure G.
CAUTION:
To prevent injury to the eyes, do NOT blow out dirt parti- cles!
Do not use fuel to clean the air filter and prefilter.
G
-Clean the air filter and prefilter 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 reinstalling the air filter, 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 filter and prefilter!
CAUTION: If the air filter or prefilter becomes damaged, replace immediately!
Pieces of cloth or large dirt particles can destroy the engine!
Replacing the spark plug STOP
1
H
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").
-Pull the plug cap (H/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.
.020" (0.5 mm)
I
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.
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