Release 00 - 11/2018
page 31
12. IGNITION
12.1. Checkingtheefciencyoftheignitionsystem
1 - Dismount the spark plug (1) and look at the co-
lour on the end of the thread. This can give you a
good idea of the carburation:
- black: mixture too greasy due to clogged air lter;
- nut brown: regular carburation.
Replace the spark plug (with one of the same or
equivalent characteristics) if the electrodes (2) are
burnt or if the porcelain is broken or cracked.
FIRE HAZARD:
- do not check the ignition system if the spark
plugisnotscrewedinplace;
-
always use the specic tool for the
spark test.
2 -
Connect the tester (3) to the spark plug
cap (4) and to earth on the engine (5). Activate the
starter and see in the instrument if the spark jumps.
3 - If the test has a positive result, clean the electro-
des (2) with compressed air and adjust the distance
to 0.7-0.8 mm. Remount the spark plug and tighten
it to the specied levels.
Unless otherwise required, proceed to verify system
components as indicated in section [
12.3].
0,7 - 0,8 mm
2
1
General information
The ignition system has a ywheel with an electronic coil which supplies high voltage to the spark plug.
See the relevant section [
17] for advice on resolving problems related to the ignition.
The coil and ywheel can be accessed by removing the cover.
Some of the following operations can be facilitated by removing the engine from the machine.
3
5
4
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