Relay; Purpose; Start Relay; Kill Relay - Toro 22317 Service Manual

4-PAW GAS/ELECTRICAL

Relay

Purpose

The 4-Paw Gas Wheeled Compact Utility Loader uses
two relays: a start relay and a kill relay.

Start Relay

If all conditions of the safety system are met, the start
relay will activate allowing current to flow to the engine
starter when the ignition switch is in the "start" position.

Kill Relay

If any of the conditions of the safety circuit are not met
during operation the kill relay is de-energized which will
ground the ignition coil. Also, when the ignition switch
is placed in the "off" position, it will de-energize the kill
relay and will ground the ignition coil.

Location

The relays are located on the right hand side, bolted
to the inside of the lower frame assembly, next to the
engine (Fig. 1210).
A. Start Relay
5/5-2
A
B
Fig. 1210 DSC-1374a
B. Kill Relay

How It Works

A relay is an electrically actuated switch.
1. Coil: Terminals 85 and 86 are connected to a coil.
Applying 12 volts to these terminals energizes the
coil turning it into an electromagnet.
2. Switch: Terminals 30, 87 and 87a are actually part
of a single pole, double throw (SPDT) switch. Ter-
minal 30 is the common lead. The switch is spring
loaded so that 30 and 87a are connecting when the
coil is not energized. When the coil is energized
the switch is "thrown" and 30 and 87 are connected
(Fig. 1211).
Toro Wheeled CUL Service Manual
Fig. 1211 IMG-0559a