21

Replacing/cleaning the

spark arrestor screen

STOP
J
The spark arrestor screen should be checked and cleaned
regularly.
- Remove the filter cover (see "Checking the muffler bolts").
- Loosen the 2 screws (J/5) and remove the spark arrestor
screen.
- Clean the spark arrestor screen with a soft brush.
NOTE: Do not use sharp or pointed objects for screen clean-
ing. Damaged or misformed screen wires may result.
IMPORTANT: If the spark arrestor screen is damaged
replace it immediately!
- Reassembly the spark arrestor screen and tighten the
screws.
Weekly maintenance

Inspecting and replacing

the spark plug

CAUTION:
NEVER touch the spark plug or spark plug cap while the
engine is running (high voltage).
Never do maintenance work with the engine running!
A hot engine can cause severe burns. Wear protective
gloves!
The spark plug must be replaced if the insulator is damaged
or if the electrodes are severely eroded or dirty or oily.
- Pull the spark plug cap (K/18) off the plug. Use only the
combination wrench supplied with the brushcutter to
remove the spark plug.
Note: Replace only with CHAMPION RCJ-6Y, BOSCH WSR
6F or NGK BPMR 7A spark plugs!
K
Electrode gap
The electrode gap must be .020" - .030" (0.5 - 0.8 mm).
Checking the ignition spark
- Remove the spark plug. With the spark plug cable on, hold
the plug against the cylinder (but not near the spark plug
hole!) using insulated pliers.
- Turn the on/off switch to “I” (on).
- Pull the starter cable hard.
A spark should be visible at the electrode gap.
L
19
18
15
STOP
.020" - .030"
(0.5 - 0.8 mm)

Checking the muffler

bolts

M
20
STOP
Caution:
Do not tighten the muffler bolts while the engine is hot!
- Remove plug connector (K/18) and unscrew and remove
the filter cover (K/15).
- Loosen the four fixing bolts (K/19) of the cover and remove
it.
- Check the muffler bolts (M/20) for tightness using the Allen
key. If loose, tighten manually. Do not over-tighten.
5