Toro Troubleshooting Tips for 4000-D and 4100 Lawn Mower Problems

Troubleshooting

CAUTION

Remove all jewelry, especially rings and watches, before doing any electrical trouble- shooting or testing. Disconnect the battery cables unless the test requires battery voltage.

For effective troubleshooting and repairs, there must be a good understanding of the electrical circuits and com- ponents used on this machine (see electrical schematic and circuit diagrams in Chapter 9 -- Foldout Drawings).

If the machine has any interlock switches by--passed, connect the switches for proper troubleshooting and safety.

Starting Problems

Problem	Possible Causes
All electrical power is dead, including gauges.	The traction pedal is not in the neutral position.
	The battery is discharged.
	Fuse F2 (10 amp) to the ignition switch is faulty.
	A bad ground connection exists on machine.
	The ignition switch or circuit wiring is faulty.
	The neutral switch or circuit wiring is faulty.
	The fusible link from the battery is faulty.
Starter solenoid clicks, but starter will not crank.	The battery is discharged.
NOTE: If the solenoid clicks, the problem is not in the	The battery cables are loose or corroded.
interlock circuit.
	A ground wire or cable is loose or corroded.
	Wiring at the starter motor is faulty.
	The starter solenoid is faulty.
	The starter is faulty.
Nothing happens when start attempt is made. Control	The traction pedal is not in neutral position.
panel lights and gauges operate with the ignition	The traction neutral switch or circuit wiring is faulty.
switch in ON.
	The ignition switch or circuit wiring is faulty.
	The start relay or circuit wiring is faulty.
	The starter solenoid is faulty.
	The starter is faulty.
Engine starts, but stops when the ignition switch is	The engine run solenoid is out of adjustment or circuit
released from the START position.	wiring is faulty.
	The high temperature shutdown switch or circuit wiring
	is faulty.

Electrical System

Groundsmaster 4100--D Page 5 -- 5 Electrical System