Service Manual

ELECTRICAL SYSTEMS
4 - 4 400XT Series Tractor Service Manual
4. You should be able to hear the solenoid “click”
when you make the connection (Figure 223).
Figure 223
MVC-837F
Ignition Switch
Purpose
This component provides the proper switching for the
starter, ignition, PTO, lights, safety, and accessory
circuits if so equipped.
Location
The ignition switch is located on the lower right side of
the tractor’s dash (Figure 224).
Figure 224
MVC-007
How It Works
Detents inside the switch give it four positions: OFF,
LIGHTS (ACCESSORIES), RUN, and START. The
START position is spring loaded so the cylinder
automatically returns to RUN once the key is released.
Terminals of the ignition switch as viewed from the
terminal end.
Figure 225
ignitionswitch1
(A) & (B) Coil Terminals (C) & (D) Contact Terminals
A
B
C
D
C
B = Battery voltage “in”
S = Starting Circuit
I = Safety & Ignition Circuit
R = Regulator Circuit
L = Light Circuit