ELECTRICAL SYSTEMS
7 - 20 Mid-Mount Z Service Manual
Purpose
The stator generates 25 amps of alternating current to
charge the battery.
How It Works
Whenever a magnet passes by a coil of wire on an iron
core, electricity is produced. The amount will depend
on the thickness of wire, the number of windings on
each coil, the strength of the magnet, and the speed at
which the magnet is moving.
This particular coil has 18 poles to produce 25 amps at
28 or more volts A.C. when the engine is running at
3600 rpm. The current produced is alternating current
since no diode or rectifier is internal to the stator.
* With regulator/rectifier disconnected
Testing
1. Remove the connector from the regulator rectifier.
Measure the voltage across the two A.C. leads on
the alternator side of the connector with the
engine running at 3600 rpm. If voltage is less than
28 volts, proceed to the next step. Otherwise,
stator is OK.
2. With the stator still disconnected and the engine
off, measure the resistance across the two A.C.
leads running to the stator. The resistance should
be .1 to .2 ohms. If not, replace the stator.
Stator Output Stator Resistance
More than 28 VAC @ 3600 rpm .64 - .2 ohms
A
B
Alternator
(Kohler)
(A) Magnets (B) Coil
A
B
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