Daewoo Lanos 2002 Owner's Manual page 127

SPARK PLUGS
Spark plugs should be inspected periodi-
cally for carbon deposits. When carbon ac-
cumulates on a spark plug, a strong spark
may not be produced.
If necessary, clean the electrodes with a
fine wire brush and carefully scrape the
carbon off the insulator with a small file. The
spark plugs should then be blown clean
with compressed air and the upper insula-
tor wiped clean. And adjust the spark plug
gap.
Service interval
Change every 20,000km or 1 years
TYPE GAP
RN9YC
0.7~0.8mm
SOHC
BPR6ES
DOHC
BKR6E-II 1.0~1.1mm
Replacing the spark plugs
1. Clean any dirt from around the spark
plug bases of each spark plug.
2. Unfasten the spark plug cables by pull-
ing on the trunk, and then remove the
plugs with a spark plug wrench.
3. Install each new plug by hand as far as
it will go. If necessary, a spark plug
wrench may be used for an extension;
if a plug does not turn in smoothly, re-
move it and try again to ensure the
correct engagement of the threads on
the spark plug with the threads in the
cylinder head.
4. Tighten the plugs with a spark plug
wrench. Do not overtighten.
5. Make sure the spark plug leads are in-
stalled in the correct order. Fasten the
trunk squarely over the end of each
plug.
SERVICE AND MAINTENANCE 7–13
WARNING
Spark plugs may be very hot.
Be careful not to burn yourself.
CAUTION
To prevent the engine or other parts
damage ;
• The spark plugs must be securely
tightened, but not overtightened.
Too loosing spark plug can get
very hot and could damage the
engine. Overtightening one could
damage the threads in the cylinder
head.
• Fit socket wrench squarely over
spark plug when slackening or
tightening.
• When installing the spark plugs,
screw them in with your finger ini-
tially.
• Disconnect cable by pulling trunk,
not the cable.
• Do not use non-recommended
spark plugs.
• Do not allow contaminants to en-
ter spark plug hole.