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Ducati 750 Sport Owner's Manual Page 66

Ducati motorcycles owner's manual.
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60
Very rarely indeed could both transducers or both stator plate circuits be defective and this
unlikely occurrence is not covered here.
DEFECT: Only one cylinder fires (no spark in one plug).
a) Check the connection to the transducer of the cylinder not firing.
b) Disconnect the green cable between the transducer and linking device; if the engine then
runs evenly the defect is in the device or cable.
c) If possible, substitute the transducer of the faulty cylinder with a replacement or test the
transducer with a special instrument.
c) If none ofthe above tests reveals the faultthe defect must be in the stator plate, in this case
carry out the following tests:
j) disconnect the generator cable from appropriate transducer.
ii Connect one Ohmmeter terminal to earth and the second to three cables successively:
white, red and green. There should be perfect insulation (figure 4A).
ii) Connect the Ohmmeter terminals between the green and white cables. A reading of 285
Ohm resistance :t 10% should be
obtained (figure 48 ).
iv) Connect the Ohmmeter terminals between the green and red cables. A reading of 1,000
Ohm resistance :t 30% should be obtained (figure 4C).
IMPORTANT: During this
test
the Ohmmeter
should be in the range'X 100'. With reversed
terminals you can check insulation.
FIG.4-A
White
~
Green
'"
..
Red
.. ..
FIG.
4.8
White
~
Red
Green
FIG.4.C
el
~
0+ -~
White
Red
Green

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