Maintenance every 6 months
BOMAG
48
BPR 25/40, BPR 25/50
5.13 Checking, cleaning the
spark plug
!
Danger
Danger of burning on hot engine!
Fig. 43
l
Pull off the spark plug socket (1) (Fig. 43) and
unscrew the spark plug (2).
Fig. 44
l
Check the spark plug visually and clean it if
necessary (Fig. 44).
i
Note
In case of excessive combustion residues, burned
off electrodes or torn insulator replace the spark
plug.
!
Caution
Make sure to use a spark plug with correct heat
value.
l
Check the electrode gap with a feeler gauge, if
necessary adjust the gap to 0,7 to 0,8 mm.
l
Screw the spark plug in by hand and tighten it
until it bottoms.
i
Note
A new spark plug needs to be tightened by anoth
1/2 turn after contact, so that the seal is com-
pressed. If an old spark plug is to be used again,
tighten it for another 1/8 - 1/4 turn after contact, in
order to compress the seal ring.
l
Tighten the spark plug.
!
Caution
The spark plug must be correctly tightened. An
incorrectly tightened spark plug can get very
hot and cause engine damage.
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