Groundsmaster 3500--DPage 5 -- 16Electrical System (Rev. D)
Neutral Switch
The neutral switch is a proximity type, normally open
reed switch that closes when the traction pedal is in the
neutral position. The neutral switch is located under the
floor support plate.
1. Disconnect electrical connector from the neutral
switch.
2. Check the continuity of the switch by connecting a
multimeter (ohms setting) across the connector termi-
nals.
3. With the traction pedal in the neutral position, there
should be continuity between the two switch leads.
4. Slowly depress the traction pedal. The continuity tes-
ter should show no continuity as the pedal is moved in
either the forward or reverse direction.
5. Reconnect switch after testing.
6. Switch adjustment: neutral switch should be
installed so that the pin on the traction pedal (neutral
position) is centered with the switch.
1. Neutral switch
2. Floor support plate
3. Switch bracket
Figure 21
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Seat Switch
The seat switch is normally open and closes when the
operator is on the seat. If the neutral switch or traction
interlock switch is open when the operator raises out of
the seat, the engine will stop.
The standard seat uses a switch that is fastened to the
underside of the seat (Fig. 22). The deluxe seat has a
switch that is mounted to the seat base under the cush-
ion. The switch electrical connector for either seat type
is located directly under the seat. Testing is the same for
either switch type:
1. Make sure the engine is off. Remove seat by remov-
ing four cap screws that secure seat mounting straps to
traction unit.
2. Disconnect electrical connector from the switch.
3. Check the continuity of the switch by connecting a
multimeter (ohms setting) across the connector termi-
nals.
4. With no pressure on the seat, there should be no
continuity between the seat switch terminals.
5. Press directly onto the seat switch through the seat
cushion. There should be c ontinuity as the seat cushion
approaches the bottom of its travel.
6. Reconnect s witch connector. Reinstall seat assem-
bly.
1. Standard seat switch 2. Electrical connector
Figure 22
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