
Section 7 — Electrical Data
Air-cooled  8.5 kW Generator
Wiring Diagram - Drawing No. 0D8500
ENGINE WIRING
DIAGRAM KEY
BA - BRUSH ASSEMBLY
BCR - BATTERY CHARGE RELAY CB1 - MAIN OUTPUT BREAKER
CB2 - CIRCUIT BREAKER, ALTERNATOR EXCITATION
D - DIODE
DSW - PCB MOUNTED DIP SWITCH FS - FUEL SOLENOID
F1 - FUSE 15 AMP
F2 - FUSE 5 AMP
GRD - CONTROL PANEL GROUND HTO - HIGH OIL TEMPERATURE SWITCH IC - INLINE CONNECTOR
ICT - INTERCONNECTION TERMINALS
IM1 - IGNITION MODULE, CYLINDER #1
IM2 - IGNITION MODULE, CYLINDER #2
LOP - LOW OIL PRESSURE SWITCH SC - STARTER CONTACTOR
SCR - STARTER CONTACTOR RELAY SP1, SP2 - SPARK PLUGS
SW1 - AUTO / OFF / MANUAL SWITCH SW2 - SET EXERCISE SWITCH
SM - STARTER MOTOR
TB - INSULATED TERMINAL BLOCK
TX - TRANSFORMER, 16 Vac 56 VA & 16 Vac 1 VA (DUAL SEC.)
| IC | 
| D | 
| SP1 | 
14
0
FS
0
14
3
2
1BATTERY CHARGER
2
1
225B
224B
13A
0
0
14
TB
| 
 | IM1 | 
 | 
| SP2 | D | IC | 
| 
 | ||
| 
 | 
 | IC | 
| 
 | IM2 | 
 | 
| 
 | 85 | 
 | 
| HTO | 
 | 
 | 
| 0 | 
 | 
 | 
| 
 | 86 | 
 | 
| LOP | 
 | 
 | 
| 0 | 
 | 
 | 
| BLACK | 
 | RED | 
| 
 | 
 | |
| - | + | SM | 
| 
 | ||
| 
 | 12V | 
 | 
| BATTERY | 
 | |
| CUSTOMER SUPPLIED | SC | 
| 
 | 
06
185
854
863
132
1
C1
86
85
16
13
| 
 | 
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 | 14 | 
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 | 0 | 
 | ||||
| 
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| 16 | 
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 | 13 | 
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| 
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 | |
| 
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 | 16 | 
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| 
 | SCR | 
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| 
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 | 13 | 
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 | |
| 
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 | 18 | 
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 | |
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| 
 | A | B | 
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| 
 | 
 | 
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 | 351 | 
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| 
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 | 0 | 
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 | 14 | ||
| 56 | 
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| 
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 | 56 | 
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 | 86 | |||||||
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| 
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 | 1 | 
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 | 3 | 
 | 4 | 
 | 5 | 
 | |||||
| 
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 | 2 | 
 | 
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 | |||||||||
J2
J1
CONTROL
PRINTED CIRCUIT BOARD
DSW
1 2 3 4
ON 
ON - INDICATES
1 - 20 Vac Sense Transformer
2 - Remote Not Auto
3 - 50 Hz Operation
4 - SPARE
L.E.D - ALARM INDICATORS
24 Generac® Power Systems, Inc.
