31 (EN)
1. Disconnect the cap (part 10) from the spark plug.
2. Remove the spark plug with the spark plug key (20).
3. Clean the electrodes and the contact with a hard brush.
4. Check the spark plug. Replace the spark plug if it is damaged or rusted, the sealing
ring is in poor condition, or the electrode is worn.
5. Measure the electrode spacing with a suitable measuring tool. See table of tech-
nical data. If settings are required, correct the distance by carefully bending the
electrode.
6. Carefully turn the spark plug in.
7. Tighten the spark plug with the spark plug key (20):
a. If you are installing a new spark plug, turn it manually onto the washer
and then with the spark plug key by ½ revolution.
b. If you reinstall the original spark plug, turn it manually onto the washer
and then with the spark plug key by ¼ revolution.
A loose spark plug can get very hot and cause damage to the
engine. If you tighten the spark plug too tightly, the thread on
the cylinder head can be damaged.
8. Attach the spark plug connector to the spark plug.
7
7
.
.
7
7
W
W
H
H
E
E
E
E
L
L
S
S
A
A
N
N
D
D
M
M
O
O
V
V
I
I
N
N
G
G
P
P
A
A
R
R
T
T
S
S
(
(
W
W
I
I
R
R
E
E
R
R
O
O
P
P
E
E
H
H
O
O
I
I
S
S
T
T
S
S
)
)
Lubricate all moving parts at least once a season with a light oil.
On this occasion, also tighten all screws and nuts, especially in the area of wire rope
hoists.
The metal surface of the mower should be coated with spray oil or siclicone spray to
prevent rust.
7
7
.
.
8
8
G
G
A
A
R
R
D
D
E
E
N
N
H
H
O
O
S
S
E
E
C
C
O
O
N
N
N
N
E
E
C
C
T
T
I
I
O
O
N
N
NOT FOR MODEL PM 4030 P.
You can also clean the bottom of the device using a water hose with a standard adapter
Cf. chapter 4