Cleaning The Air Þ Lter; Replacing The Spark Plug - Dolmar 109 HappyStart Instruction Manual

Cleaning the air Þ lter
1
E
- Remove the Þ lter cover (E/1) (2 screws).
- Loosen the screws on the air Þ lter (E/2) and remove from
intake manifold.
- Loosen the screw on the preÞ lter cover (E/3) and remove.
- Remove preÞ 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 Þ 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 Þ lter and preÞ lter.

Replacing the spark plug

G
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 Þ lter cover (see "Cleaning the air Þ 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.
20
2
4
3
1
F
- Clean the air Þ lter and preÞ lter with a soft brush.
- If the Þ lter is very dirty, clean it in lukewarm water with dish-
washing detergent.
- Let the air Þ lter dry completely.
- Put the top and bottom sections back together.
- Before reinstalling the air Þ 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 Þ lter and preÞ lter!
Important: For sawing dry wood and working on dusty ground
we recommend using a Robkoß ok air Þ lter (available as an
accessory). The Robkoß ok Þ lter keeps out even the smallest
dust particles.
CAUTION: If the air Þ lter or preÞ lter becomes damaged,
replace immediately!
Pieces of cloth or large dirt particles can destroy the en-
gine!
H
Electrode gap
The electrode gap must be 0.5 mm.
Checking the ignition spark
- Press the loosened spark plug with the ignition cable Þ 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.
0,5 mm