Adi Ignition Using A Red Stator With An Adapter Module - Mercury 75 Service Manual

* Connect test lead to BLACK stator lead if stator is
removed from engine.
4 CYLINDER WITH 16 AMPERE STATOR
398-9710A33
USA-0G301751 – 0G404616
BELGIUM - 09885528 – 09916721
Test Leads
Between Blue Stator Lead
and Blue/Wht Stator Lead
(Low Speed)
Between Red Stator Lead
and Red/White Stator Lead
(Hi-Speed)
NOTE: Above readings are for a cold engine (room
temperature). Resistance will increase slightly, if en-
gine is warm.
3. If meter readings are other than specified, re-
place stator assembly.
IGNITION COIL TEST
IMPORTANT: Ohmmeter tests can only detect
certain faults in the ignition coil. Replace ignition
coil, if ohmmeter readings (listed in chart, follow-
ing) are not as specified. If coil tests OK, and coil
is still suspected of being faulty, use Multi-Meter/
DVA Tester (91-99750) or a voltmeter (capable of
measuring 400 volts DC, or higher) and Direct
Voltage Adaptor (91-89045) to thoroughly check
coil.
1. Disconnect wires from coil terminals.
2. Pull spark plug lead out of coil tower.
3. Use an ohmmeter and perform the following
tests.
Test Leads
Between (+) and
(–) Coil Terminals
Between Coil Tower and
(–) Coil Terminal
* The primary DC resistance of these coils generally is less
than one (1) OHM. If a reading resembling a short is
obtained, this would be acceptable.
** Copper wire is an excellent conductor, but it will have a
noticeable difference in resistance from cold to hot
temperatures. Reasonable variations from these readings
are acceptable.
4. If meter readings are not as specified, replace
ignition coil.
90-830234R3 DECEMBER 1997
Resistance Scale Reading
(OHMS) (x__________)
1.0-1.4
1000-1400
(R x 1000)
15-30
15-30
(R x 1)
Resistance Scale Reading
(OHMS) (x__________)
.02-.04*
.02-.04*
(R x 1)
8-11**
800-1100**
(R x 100)
TRIGGER TEST
1. Disconnect all trigger leads from switch box.
2. Use an Ohmmeter and perform the following
tests.
3 CYLINDER TRIGGER SPECIFICATIONS
Test Leads
Between Brown Trigger Lead
and White/Black Trigger
Lead
Between White Trigger Lead
and White/Black Trigger
Lead
Between Violet Trigger Lead
and White/Black Trigger
Lead
NOTE: Above readings are for a cold engine (room
temperature). Resistance will increase slightly, if en-
gine is warm.
4 CYLINDER TRIGGER SPECIFICATIONS
Test Leads
Between Brown Trigger Lead
and Black Trigger Lead
Between White Trigger Lead
and Violet Trigger Lead
NOTE: Above readings are for a cold engine (room
temperature). Resistance will increase slightly, if en-
gine is warm.
3. If meter readings are not as specified, replace
trigger.
ADI Ignition using a RED
Stator with an Adapter
Module
Red stators require an adapter module that is con-
nected between the stator and switch box. Without
the adapter module, the voltage supplied by the sta-
tor would exceed the voltage capability of the switch
box.
Resistance Scale Reading
(OHMS) (x__________)
11-14
1100-1400
(R x 100)
11-14
1100-1400
(R x 100)
11-14
1100-1400
(R x 100)
Resistance Scale Reading
(OHMS) (x__________)
7-10
700-1000
(R x 100)
7-10
700-1000
(R x 100)
ELECTRICAL - 2A-17