Schiller 73-70900, Parts Manual

8

CHIPPER/

SHREDDER

ASSEMBLY

INSTALLATION INSTRUCTIONS FOR EMERGENCY STOP SWITCH OUTLET ON MODEL 420

Model 420

1.  Disconnect the battery ground cable.

2.  On model 420 with Onan engine, mount the electrical 

outlet on the left side of the black upper grille panel with 

two 1/4 x 3/4 flange bolts and nuts.  Choose a location 

using the existing slots in the panel.  On models with 

Kubota engines, the outlets are mounted on the right side.

3.  Connect the new harness (Part No. 30—174) to the 

electrical outlet following the wiring diagram on Page 20. 

Connect the brown wire to the “W” terminal, the green 

wire to the “G” terminal and the black wire to the “BK” 

terminal.

4.  Locate the safety interlock relay under the dash and find 

the brown wire in the bulk connector.  Remove the bulk 

connector and carefully release the brown wire from the 

connector with a small blade pocket screwdriver.  Place 

the single black plastic connector on this brown wire and 

connect to the new harness matching connector.  This is 

the seat switch wire.

5.  Locate the brown jumper wire on the wiring harness. 

(connected with a blue 3M connector)  Plug the end of the 

brown jumper wire into the safety relay bulk  connector 

where the brown wire was removed in step 3. Connect 

the bulk connector to the safety relay.

6.  Route the white wire to the ignition switch.  Find the 

accessory terminal (white wire).  Remove the wire and 

place the double male spade adapter on the switch. 

Replace the wire and connect the white wire to the other 

terminal of the double spade.  NOTE:  On Kubota tractors, 

cut the spade terminal off the white wire, crimp the 

enclosed ring terminal to the white wire and attach it to 

the accessory terminal of the ignition switch.

7.  Check the wiring diagram and snap the brown seat switch 

wire in the new relay bulk connector aligned with 87A on 

the new relay.  The brown wire from the safety relay aligns 

with 30.  The black wire aligns with 85 and the white wire 

with 86.  Snap these in place and push the connector on 

the relay.

8.  Mount the new relay by drilling a hole in the battery tray of 

the Onan power units.  On Kubota units, drill a hole at a 

suitable location on the side of the dash panel.

9.  Connect the green wire ring terminal to a suitable ground.  

Tie all wires to keep them from contact with moving parts 

or exhaust system.

10.  Reconnect the battery cable, plug in the chipper/shredder 

cable and test the emergency stop switch for proper 

operation.  Pull the switch out for normal operation.  Start 

engine and engage the PTO. Push in for emergency stop.