Electrical Systems; Gear Drive Models; Hydrostatic Models; Relay - Toro 260 Series Service Manual

The electrical system in the 260 Series Lawn and
Garden Tractors differ between Gear Drive and
Hydrostatic Drive models. Following is a brief
explanation.

Gear Drive Models

Two things happen when turning the ignition switch to
the "START" position. (1) Current flows from the
ignition switch through the PTO (Power Take Off)
switch, brake switch, neutral switch, seat switch, and
activates the interlock relay, which sends voltage to the
coil of the starter solenoid. This solenoid actuates and
allows voltage to the starter motor of the engine. (2) At
the same time, with the ignition in the "START"
position, current will flow to the kill relay, which
activates and takes the engine magneto ground wire
off of ground to allow the engine to have spark.

Hydrostatic Models

The hydrostatic model tractors start in a similar manner
except instead of a starter solenoid we use a start
relay. The starter on the engine is a solenoid shift
starter.
Once you have the tractor running, you can now
engage the PTO (Power Take Off) switch which will
engage the electric clutch for the mower only if you are
in the seat, activating the seat switch. Anytime you
vacate the seat with the electric clutch activated for the
mower, the seat switch will open and cut off voltage to
the relay, which will deactivate and ground the engine
magneto and stop the engine. If you vacate the seat
with the PTO switch disengaged and the park brake
engaged, the engine will continue to run.
The following electrical section covers most of the
electrical components used on the 260 Lawn and
Garden Tractors. It covers each electrical
component's purpose, how it works, testing
procedures, and location on the tractor. To help you
further to troubleshoot electrical problems, the Riding
Products Electrical Demystification Guide, Form # 492-
4509, is available with complete wiring and circuit
diagrams to help diagnose electrical problems.
260 Series Tractor Service Manual

ELECTRICAL SYSTEMS

Relay

Purpose

The 260 Series Lawn and Garden Tractors use relays
to direct current flow to different areas of the tractor.
The most complex models have four relays: cruise
control relay, interlock relay, kill relay, and a start relay.
Electrically, they all operate the same.

Location

The relays are located on the firewall of the tractor
(Figure 218).
Figure 218

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.
MVC-211X
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