29
BATTERY
FUSE
RED
RED
RED
RED
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
IGNITION
UNIT
SPARK
PLUGS GAP
(2 PLUGS ON
TWIN CYL. ENGINES)

NON-REMOVABLE

CONNECTIONS

REMOVABLE

CONNECTIONS

BLACK
ORANGE
BROWN
M
SOLENOID

WIRING INSULATED CLIPS

NOTE: IF WIRING INSULATED

CLIPS WERE REMOVED FOR

SERVICING OF UNIT, THEY

SHOULD BE REPLACED TO

PROPERLY SECURE YOUR WIRING.

A
AMMETER
RED
(OPTIONAL)
HEADLIGHTS
BLACK
RED
RED
ELECTRIC CLUTCH
CLUTCH / BRAKE
(PEDAL UP)
PTO (DISENGAGED)
CG
F
B
E
A
D
H
RED
WHITE
WHITE
WHITE
GREEN GREEN
BLUE
BLACK
HOUR
METER
(OPTIONAL)
BLUE
STARTER

PTO SWITCH

CIRCUITPOSITION
OFF
C + F, B + E, A + D
ON
C + G, B + H

B

A

G

H

D

FC

E

FUEL SHUT-OFF SOLENOID
FUEL
LINE
IGNITION
SWITCH
G
BSM
A1
A2
L
OPERATOR
PRESENCE
RELAY #1
85 86
30
87
87A
SEAT SWITCH
(NOT OCCUPIED)
87
87A 8586
30

RELAY

REGULATOR
ALTERNATOR
28 VOLTS AC @ 3600 RPM
(REGULATOR DISCONNECTED)
CHARGING SYSTEM OUTPUT
16 AMP DC @ 3600 RPM

IGNITION SWITCH

CIRCUITPOSITION
OFF
B+A1RUN/LIGHT
B + S + A1START
M+G+A1
B+A1RUN
“MAKE”
A2+L
NONE
NONE
NONE
TRACTOR - MODEL NUMBER PR20PH42STB
SCHEMATIC