Briggs & Stratton 86262GS Familiarization & Troubleshooting Manual page 74

Test 5
: — Check Stator Excitation (DPE) Windings
NOTE:
The excitation wires may be colored or
numbered.The numbered wires are #2 and #6.The
colored wires are blue and red. Be sure not to
confuse the colored excitation wires with the
colored power wires.The excitation wires are the
wires connected to the bridge rectifier or voltage
regulator.
• Set the VOM to its "OHM" scale.
• Connect the test leads to the stator excitation wires
(Figure 3.24).
Figure 3.24 —Checking DPE Resistance
Measure the resistance and compare it to the nominal
resistance from the appropriate table
(Briggs & Stratton Power Products
Rotor/Stator Resistance Tables Pub. #87971 Rev 6 or later).
A reading of infinity or high resistance indicates an opening
in the excitation winding.
A low reading indicates a shorted stator
winding.
• Connect one test lead to a stator power wire. Connect
the other test lead to one of the stator excitation wires
(Figure 3.25).
®
"Portable Generator
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Portable Generator Familiarization & Troubleshooting Guide
Section 3 • Generator Diagnostics and Adjustments
Figure 3.25 — Testing For Short Between Windings
A reading of infinity should be measured. A reading other
than infinity indicates a power winding
shorted to an excitation winding.
• Connect one test lead to an excitation wire. Connect
the other test lead to a good metal ground.
(Figure 3.26)
Figure 3.26 — Checking DPE "Short To Ground"
A reading of "infinity" should be measured. A reading other
than infinity indicates a winding
shorted to ground.
72
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