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6.7
Clean, check the spark plugs, replace if necessary
BOMAG
56
008 921 86
6.7
Clean, check the spark plugs,
replace if necessary
!
Danger
Danger of burning!
Let the engine cool down for approx. 15 minutes
before unscrewing the spark plugs.
!
Caution
Renew the spark plugs at the latest after 250 oper-
ating hours or once every year.
Fig. 13
l
Pull off the spark plug socket (1) (Fig. 13) and clean
off any dirt in the spark plug area.
l
Unscrew the spark plug with a spark plug spanner
(2).
Fig. 14
l
Check the spark plug visually and clean it if neces-
sary (Fig. 14).
!
Caution
In case of excessive combustion residuals or
burned off electrodes replace the spark plug, en-
sure correct heat value of the spark plug.
Do not use spark plugs with incorrect heat value.
Recommended spark plug: ZFR5F (NGK)
l
Check the electrode gap with a feeler gauge, if nec-
essary adjust the gap to0.03 - 0.032 in (0.7 - 0.8
mm).
l
Turn the spark plug carefully in by hand.
l
Tighten the spark plug with a spark plug spanner,
until it is correctly seated.
l
Tighten a new spark plug for another 1/2 turn.
l
Tighten used spark plugs by another 1/8 to 1/4 turn.
!
Caution
A loose spark plug can overheat and damage the
engine.
Overtightening the spark plug can damage the
thread in the cylinder head.
l
Press the spark plug socket back on.
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