Service Manual

4-PAW DIESEL/ELECTRICAL

6/5-2 Toro Wheeled CUL Service Manual

Relay

Purpose

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 connected when the

coil is not energized. When the coil is energized the

switch is “thrown” and 30 and 87 are connected (Fig.

2047).

A. Inside – Glow Plug Relay

B. Outside – Start Relay

Fig. 2047 IMG-0559

The 4-Paw Diesel Wheeled CUL uses two relays. One

to direct current ow to the start relay and the other to

direct ow to the glow plug relay.

Location

The relays are located inside of the lower frame assem-

bly, to the right of the engine (Fig. 2046).

Fig. 2046 DSC-3157