Kohler PRO6.4 User Manual

Troubleshooting
8 TP-7088 6/17KohlerPower.com
Replace AVR
With engine stopped, replace AVR with a
new AVR. Start engine and adjust trimmer
on back of AVR. Test terminal voltage.
Voltage should be between 95-135V. If
voltage is met, original AVR is not adjusted
properly or faulty. Replace as necessary. If
voltage not met, check circuit breakers and
receptacles.
Unit Item
Generator Spec.
REMARK
PRO6.4/6.4E PRO9.0/9.0E
Main Winding
Red-Blue 0.27Ω±10% 0.13Ω±10%
Red-White
(PRO9.0E)
White-Black 0.27Ω±10% 0.13Ω±10%
Field Winding Between slip ring 46.6Ω±10% 56.4Ω±10%
Exciter Winding Blue-Blue 1.60Ω±10% 1.02Ω±10%
DC Winding Orange-Orange 0.10Ω±10% 0.08Ω±10%
Brush Length 9mm
Service limit:
5mm
Figure 1 Generator Specifi cations
NOTE: Alternator should not be in contact with panel, AVR, etc during above resistance tests. Alternator should be
tested at room temperature.

Kohler PRO6.4 Specifications

General

Brand	Kohler
Model	PRO6.4
Category	Portable Generator
Language	English