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Portable Generator
20EOZ
Kohler 20EOZ Service Manual
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TP-6071
3/00
52
Section
10
Wiring
Diagrams
10.3
Remote
Start
Panel
Start
P
P
K1
70
47
43
N
Gen.
ON
light
Remote
switch
P3-5
P3-6
P3-1
P2-3
P2-7
P2-8
P2-9
K2
P1-14
47
P2-4
43
P2-5
P2-6
N
P1-9
N
+-
-
Relay
circuit
board
Local
switch
Violet
Black
Y
ellow/
Red
Grey/
Black
Start
Stop
Stop
10-amp
fuse
P3-4
J3-4
J3-5
J3-1
J3-6
TP-5588-7
10.4
Remote
Start
and
T
wo-Meter
Panel
P3-2
J3-2
Start
P
P
7C
K1
70
47
43
N
Oil
pressure
gauge
Water
temp.
gauge
Gen.
ON
light
Remote
switch
5
P3-5
P3-6
P3-1
P3-3
P2-3
P2-7
P2-8
P2-9
P4-2
P4-3
K2
P1-14
47
P2-4
43
P2-5
P2-6
N
P1-9
N
+-
-
Relay
circuit
board
Local
switch
Violet
Ta
n
Black
Y
ellow/
Red
Grey/
Black
L.
Blue
Start
Stop
Stop
10-amp
fuse
P3-4
W.
T.
sender
O.P
.
sender
J3-4
J3-5
J3-6
J3-1
J3-3
TP-5588-7
63
65
Table of Contents
Table of Contents
3
Safety Precautions and Instructions
5
Fuel System
7
Hot Parts
8
Introduction
11
Service Assistance
12
Service Information
12
Product Information
12
Section 1 Specifications
13
General
13
Engine
14
Fuel
15
Cooling
15
Generator, 4 Lead
16
Generator, 12 Lead
16
Service Views
17
Section 2 Scheduled Maintenance
19
General
19
Lubrication System
20
Section 3 Intake and Exhaust System
21
Air Intake Silencer
21
Exhaust System Inspection
21
Servicing Mixing Elbow
22
Turbocharger
22
Section 4 Fuel System
23
General
23
Fuel Filter
23
Bleeding
23
Fuel Pump
24
Governor
25
Section 5 Cooling System
27
General
27
Closed Heat Exchanger
28
Check and Fill Coolant
28
Flush and Clean Cooling System
28
Pressure Cap
28
Impeller Inspection and Replacement
29
Siphon Break
30
Section 6 Controller Troubleshooting
31
Controller
31
Controller Sequence of Operation
32
Start
32
Run
32
Stop
32
Engine Safety Shutdown Switches
34
Low Oil Pressure (LOP) Shutdown Switch
34
High Water Temperature (HWT) and High Exhaust Temperature (HET) Shutdown Switch
34
Overspeed Safety Shutdown (SDR)
35
Controller Circuit Board
35
Troubleshooting Flow Chart
36
Section 7 Generator Troubleshooting
41
General
41
Generator Troubleshooting
41
Separate Excitation
41
Powerboostä V Voltage Regulators
42
Voltage Regulator Test
43
Voltage Regulator Adjustment
44
Exciter Field
45
Exciter Armature
46
Rectifier Module
47
Rotor
47
Stator
48
Section 8 Component Troubleshooting
51
General
51
Remote Panels (Optional)
53
Section 9 Generator Disassembly/Reassembly
55
Disassembly
55
Reassembly
58
Section 10 Wiring Diagrams
61
Manual Marine (Ship-To-Shore) 2 Wire and 3 Wire Transfer Switches
62
Manual Marine (Ship-To-Shore) 4 Wire Transfer Switch
63
Remote Start Panel
64
Remote Start and Two-Meter Panel
64
Remote Start and Four-Meter Panel
65
Wiring Diagram 4-Lead
67
Wiring Diagram 12-Lead
68
Appendix A Abbreviations
69
Identification
69
Appendix B Common Hardware Application Guidelines
71
Appendix C General Torque Specifications
72
Appendix D Common Hardware Identification
73
Appendix E Common Hardware List
74
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Kohler 20EOZ Specifications
General
Brand
Kohler
Model
20EOZ
Category
Portable Generator
Language
English
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