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8.3 Spark plug maintenance.
Spark plug recommendation:
TORCH
F7TC,
NGK
BP7ES,
DENSO
W22EP-U,
BOSCH
WR3C.
1
Unplug the spark plug pipette or cap by pulling outward (as shown with the
arrow in the figure below).
2
Using the spark plug spanner, extract the spark plug by unscrewing it from
the engine (turn counter clockwise)
4
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.
5
Measure the electrode distance with a gauge.
Normal value 0.6 - 0.7 mm. Adjust the opening
carefully if the value is not correct.
6
Place the spark plug again carefully, start
screwing with your hand to avoid the threads.
Once the spark plug is threaded to the end of the
thread, make the final tightening:
•
New spark plugs, 1/2 turn with the spark plug spanner.
•
1/8 to 1/4 turn used spark plugs with spark plug spanner.
SPARK PLUG KEY
ELECTRODE
SPARK PLUG PIPETTE OR CAP
