Red Stator With Adaptor And Ignition Coils; Red Stator Dva Test; Electric Start Engines; Manual Start Engines - Mercury 45 Jet 50-55 Service Manual

RED Stator with Adaptor and
Ignition Coils

RED Stator DVA Test

Test Selector
Switch Posi-
tion
Coil Primary 400 VDC*
Stop Circuit 400 VDC*
Blue Sw. Box 400 VDC*
Terminal
Blue/White Sw. 400 VDC*
Box Terminal
NOTE: The stator for manual start engines have a BLUE/
WHITE and a BLACK wire which provide power for the over-
heat horn and overspeed limiter module.

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 Yel- Connect to Yel-
low stator lead low stator 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 Yel- Connect to Yel-
low stator lead low stator lead
2A-6 - ELECTRICAL and IGNITION
RED DVA BLACK DVA
Lead Lead
Coil (+) Termi- Coil (–) Termi-
nal nal
Black/Yellow Ground
Sw. Box Termi-
nal
Blue Sw. Box Ground
Terminal
Blue/White Sw. Ground
Box Terminal
R x 1 Ohms
Scale Scale
660 – 710
0.165 – 0.181
R x 1 Ohms
Scale Scale
660 – 710
130 – 145
0.17 – 0.19
NOTE: If using a meter with a built -in DVA, place selector
switch in the DVA/400 VDC position.
Red stators require an adapter module that is
NOTE:
connected between the stator and switch box. With-
out the adapter module, the voltage supplied by the
stator would exceed the voltage capability of the
switch box.
Voltage @ 300 Voltage @
RPM
130 Volts Mini-
mum
190 Volts Mini-
mum
190 Volts Mini-
mum
190 Volts Mini-
mum
NOTE: Resistance varies greatly with temperature. Mea-
surements should be made within an ambient range of 65 to
85 degrees F

Troubleshooting Procedures

If the DVA reading is HIGH (particularly @ 1000 RPM)
the ADAPTER MODULE is defective.
If the DVA reading is LOW, the stator, adapter module
or switch box may be defective. Refer to the particular
engine model procedure, following, to isolate the prob-
lem.
Disconnect the BLUE adapter lead from the
switch box.
Connect the DVA meter between the BLUE
adapter lead and ground.
Crank the engine (manual or electric).
If the DVA is normal (190 to 260 volts), the switch
box is defective.
If the DVA reading is still low, either the stator or
the adapter is defective.
Disconnect the GREEN/WHITE and WHITE/
GREEN stator leads from the adapter.
Measure the resistance between the GREEN/
WHITE and WHITE/GREEN stator leads.
If the resistance is normal (660 to 710 ohms), the
adapter is defective.
If the resistance is incorrect, the stator is defec-
tive.
Voltage @
1000 RPM 4000 RPM
195 to 275 195 to 275
275 to 320 260 to 320
275 to 320 260 to 320
275 to 320 260 to 320
90-817643R1 DECEMBER 1996