Red Stator With Adaptor And Ignition Coils; Red Stator Dva Test; Electric Start Engines; Manual Start Engines - Mercury 75 Service Manual

RED Stator with Adaptor and Ignition Coils

RED Stator DVA Test

Selector
Test Switch
Position
Coil Primary 400 VDC*
Stop Circuit 400 VDC*
Blue Sw. Box
400 VDC*
Terminal
Blue/White Sw.
400 VDC*
Box Terminal
Switch Box 20 VDC or 40
Bias VDC
(1) Using meter only, REVERSE LEAD POLARITY; connect leads as specified
NOTE: If using a meter with a built -in DVA, place selector switch in the DVA/400 VDC position.

Electric Start Engines

Red Stator Resistance Test
(all wires disconnected)
Positive Meter Negative
Lead (+) Meter Lead (–)
Connect to Connect to
White/Green Green/White
stator lead stator lead
Connect to Connect to
Yellow stator Yellow stator
lead lead

Manual Start Engines

Red Stator Resistance Test
(all wires disconnected)
Positive Meter Negative
Lead (+) Meter Lead (–)
Connect to Connect to
White/Green Green/White
stator lead stator lead
Connect to Connect to
Blue/White Black
Connect to Connect to
Yellow stator Yellow stator
lead lead
2A-18 - ELECTRICAL
RED DVA BLACK DVA
Lead Lead
Coil (+) Coil (–)
Terminal Terminal
Black/Yellow
Sw. Box Ground
Terminal
Blue Sw. Box
Ground
Terminal
Blue/White Sw.
Ground
Box Terminal
White/Black
Ground (1) Switch Box
Terminal (1)
R x 1 Ohms
Scale
660 - 710
0.165 - 0.181
R x 1 Ohms
Scale
660 - 710
130 - 145
0.17 - 0.19
Voltage
@ 300 RPM @ 1000 RPM
130 Volts
195 to 275
Minimum
190 Volts
275 to 320
Minimum
190 Volts
275 to 320
Minimum
190 Volts
275 to 320
Minimum
2 to 10
NOTE: Resistance varies greatly with temperature.
Measurements should be made within an ambient
range of 65 to 85 degrees F .
NOTE: The stator for manual start engines have a
BLUE/WHITE and a BLACK wire which provide pow-
er for the over-heat horn and overspeed limiter mod-
ule.

Troubleshooting Procedures

ALL MODELS –
If the DVA reading is HIGH (particularly @ 1000
RPM) the ADAPTER MODULE is defective.
If the DVA reading is LOW, the stator, adapter mod-
ule or switch box may be defective. Refer to the par-
ticular engine model procedure, following, to isolate
the problem.
90-830234R3 DECEMBER 1997
Voltage Voltage
@ 4000 RPM
195 to 275
260 to 320
260 to 320
260 to 320
10 to 30 10 to 30