Auxiliary Neutral Switch; Purpose; Location; How It Works - Toro 22317 Service Manual

CHAIN DRIVE/ELECTRICAL

Auxiliary Neutral Switch

Purpose

The normally closed ball type switch is used on the
auxiliary hydraulic valve. This is a safety switch to make
sure the auxiliary hydraulic valve is in the neutral detent
(Fig. 0864).

Location

A neutral switch is threaded into the lower portion of the
auxiliary hydraulic valve, located on the right side of the
upper frame assembly (Fig. 0865).
4/5-4
Fig. 0864 IMG-0547a
Fig. 0865 DSC-0822a

How It Works

The switch has a spring loaded ball. When the auxiliary
hydraulic valve is in the neutral position, the ball moves
into a machined notch located in the spool. The normally
closed switch then provides a ground to the start circuit.
When the auxiliary lever is moved out of neutral, the
spool pushes against the ball end of the switch and
opens the ground circuit which prevents the engine from
starting.

Testing

1. Disconnect the switch from the wiring harness. The
ball end of the switch should remain installed in the
auxiliary hydraulic valve.
2. Connect the VOM multimeter (ohms setting) leads to
the two wire terminals. Move the auxiliary hydraulic
valve handle to either the reverse flow or forward
flow position; there should be NO continuity.
Toro Wheeled CUL Service Manual