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Groundsmaster 4000--DPage 5 -- 12Electrical System
PTO Switch
The PTO switch is used to engage or disengage the cut-
ting decks. The PTO switch is attached to the control
console next to the operator seat (Fig. 13).
Testing
The switch terminals are marked as shown in Figure 14.
The circuitry of the PTO switch is shown in the chart be-
low. With the use of a multimeter (ohms setting), the
switch functions may be tested to determine whether
continuity exists between the v arious terminals for each
position. Verify continuity between switch terminals.
NOTE: The PTO ENGAGE position requires lifting and
pushing the lever toward the switch keyway. The PTO
OFF position occurs when the lever is pushed opposite
the keyway.
SWITCH
POSITION
NORMAL
CIRCUITS
OTHER
CIRCUITS
PTO ENGAGE 1+2 4+5
PTO ON 1+2 NONE
PTO OFF NONE NONE
1. PTO switch 2. Control console
Figure 13
1
2
Figure 14
1
2
45
BACK OF PTO SWITCH
Alarm Silence and Temperature Override Switches
The alarm silence and temperature override rocker
switches are located on the control console next to the
operator seat (Fig. 15). These switches are identical.
Testing
Theswitchterminals areshownin Figure 16.The circuit-
ry of the switches is shown in the chart below. With the
use of a multimeter (ohms setting), the switch functions
may be tested to determine whether continuity exists
between the various terminals for each position. Verify
continuity between switch terminals.
SWITCH
POSITION
NORMAL
CIRCUITS
OTHER
CIRCUITS
ON 2+3 5+6
OFF 1+2 4+5
1. Control console
2. Alarm silence switch
3. Temp. override switch
Figure 15
1
3
2
Figure 16
BACK OF ALARM SILENCE AND
132
45 6
8
7
TEMPERATURE OVERRIDE SWITCHES