86
Englis
h
12.3 Spark plug maintenance
Spark plug recommendation:
TORCH
F6RTC, NGK BPR6ES,
CHAMPION
RN9YC
1
Unplug the spark plug cap pulling outward.
2
Using the spark plug wrench, extract the spark plug by unscrewing it from the
engine (turn counter clockwise).
3
Inspect the spark plug visually. Replace with a
new one if the insulator is cracked or chipped.
Clean the electrode with a fine wire brush to clean
the filth deposits.
4
Measure the electrode distance with a gauge.
Normal value 0.6 - 0.7 mm. Adjust the electrode
gap carefully if the value is not correct.
5
Carefully replace the spark plug; begin screwing it
with your hand to avoid damaging the threads. Once
the spark plug is threaded to the end of the thread,
make the final tightening:
New plugs 1/2 turn using the spark plug spanner.
Used spark plugs 1/8 to 1/ 4 turn using the spark plug spanner.
6
Reinstall the spark plug cap.
SPARK PLUG WRENCH
ELECTRODE
SPARK PLUG CAP
