Yamaha WaveRunner GP1200R Manuel D'entretien page 318

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ELEC
ELECTRICAL ANALYSIS
Low resistance measurement
NOTE:
When measuring a resistance of 10 Ω or
less with the digital tester, the correct
measurement
because of the tester's internal resistance.
To obtain the correct value, subtract the
internal resistance from the displayed
measurement.
The internal resistance of the tester can be
obtained by connecting both of its termi-
nals.
Correct value =
Displayed measurement –
Internal resistance
Peak voltage measurement
NOTE:
When checking the condition of the igni-
tion system it is vital to know the peak
voltage.
Cranking speed is dependant on many
factors (e.g., fouled or weak spark plugs, a
weak battery). If one of these is defected,
the peak voltage will be lower than speci-
fication.
If the peak voltage measurement is not
within specification the engine will not
operate properly.
A low peak voltage will also cause compo-
nents to prematurely wear.
Peak voltage adaptor
NOTE:
Throughout this chapter the peak voltage
adaptor's part number has been omitted.
Refer to the following part number.
The peak voltage adaptor should be used
with the digital circuit tester.
Peak voltage adaptor:
YU-39991/90890-03169
7-8
cannot be obtained
E