ELEC
Electrical system
–
+
8-7
67C3K11
Checking the electrical
component
Measuring the peak voltage
To check the electrical components or mea-
sure the peak voltage, use the special ser-
vice tools. A faulty electrical component can
be easily checked by measuring the peak
voltage. The specified engine speed when
measuring the peak voltage is affected by
many factors, such as fouled spark plugs or a
weak battery. If one of these factors is
present, the peak voltage cannot be mea-
sured properly.
WARNING
When checking the peak voltage, do not
touch any of the connections of the digital
tester leads.
CAUTION:
When testing the voltage between the ter-
minals of an electrical component with
the digital tester, do not allow any of the
leads to touch any metal parts. If touched,
the electrical component can short and be
damaged.
NOTE:
• Before measuring the peak voltage, check
all wiring for corrosion and proper connec-
tion, and check that the battery is fully
charged.
• Use peak voltage adapter B with the rec-
ommended digital circuit tester.
• Connect the positive pin of peak voltage
adapter B to the positive terminal of the dig-
ital tester, and the negative pin to the nega-
tive terminal.
• When measuring the peak voltage, set the
selector on the digital circuit tester to the
DC voltage mode
.
DC V
S6AL8010
Digital circuit tester: 90890-03174
Peak voltage adapter B:
90890-03172
Summary of Contents for F30A
Page 1: ...F30A F40B SERVICE MANUAL 67C 28197 3K 11 ...
Page 4: ......
Page 26: ...GEN INFO General information 1 21 67C3K11 MEMO ...
Page 150: ...POWR Power unit 5 55 67C3K11 MEMO ...
Page 236: ...BRKT Bracket unit 7 55 67C3K11 MEMO ...
Page 282: ......
Page 283: ...YAMAHA MOTOR CO LTD Printed in China Aug 2007 1 2 1 CR E ...