Seat Switch (S/N Between 30101 and 80000)
The seat switch is a proximity type, normally open (NO)
reed switch that closes when the operator is on the seat.
With the operator on the seat, the magnet on the bottom
of the seat activates the reed switch causing it to close
and complete the circuit.
1.
Raise the seat to get access to the seat switch wiring
connector.
2.
install a continuity tester or ohm meter between the two
leads of the seat switch.
Disconnect the seat switch wiring connector and
1
3.
Lower the seat. The continuity tester should show no
continuity.
Figure 9
Note:
Make sure the compression spring holds the
seat up off the seat switch when there is no operator on
the seat.
1.
Seat switch
4.
Have the operator sit on the seat, slowly depressing
the seat switch magnet. The continuity tester should
show continuity as the seat approaches the bottom of its
travel.
Seat Switch (S/N 80001 and Up)
The seat switch is normally open and closes when the
operator is on the seat. The switch and its electrical con-
nector are located directly under the seat.
1
1.
2.
Make sure the engine and ignition switch is Off.
Disconnect switch harness connector from the ma-
chine wire harness.
3.
multimeter (ohms setting) across the switch harness
connector terminals.
Check the continuity of the switch by connecting a
5
4.
With no operator in the seat, there should be no conti-
2
4
nuity between the terminals.
3
5.
Press directly onto the seat switch through the seat
cushion. There should be continuity as the seat cushion
approaches the bottom of its travel.
6.
wire harness.
Connect switch harness connector to the machine
Figure 10
1.
2.
3.
Seat
Seat plate
Screw (2 used)
4.
5.
Seat switch
Switch harness
If switch removal is necessary, remove seat plate with
seat from seat adjusters. Remove switch from bottom of
seat.
Electrical System (S/N 30101 & Up) (Rev. E)
Page 8 -- 12
Groundsmaster 580--D
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