Question-------------------------
Followup To
Question -
Hi Marc
I have a Huskavarna lawn tractor model 150. This model has several safety switches, include presence switch on the set, brake switch, blade engagement switch and transmission switch, ie you need to be in the seat, brake has to be applied, blade not engaged and transmission needs to be engaged (ie tractor can not roll), therefore alot of wires.
My Problem:
I'm getting no electrical current. The tractor work fine the day before and now it is dead.
What I have tried:
Checked 30amp fuse. It apears to be fine.
Checked all wiring, I did not find any problems there.
Made sure I did not have a dead battery, also tried jumper cables to truck (it is a 12v system)
Over rode the presence switch,as it is pretty easly to get at, the other switches are not.
Other things I have noticed:
I am not getting any power to even the headlights.
There is no power to the amp meter, the needle does not move at all.
I am wondering if it may be the solenode or other electrical device, although I do not know how to check to see if I have a bad device.
Any directions from you would be greatly apreciated.
Regards,
David Murphy
Answer -
The safety switches are in the ignition and start circuits but will not cut off all power to the tractor. You need to take a step by step approach to this problem. First, check all of the connections from the battery to the solenoid, the battery to ground (chassis) and the solenoid connections. Check out this link for a typical electrical diagram for a lawn tractor: http://www.jacques.lacasse.com/GardenTractor/Diagrams/ElectDiagr.htm Using this diagram as a guide and a test light (or multimeter), you are going to have to track down, connection by connection, where the break in power is occuring. Because you also say the headlights won't come on and you have checked the fuse (re-check it with an ohmmeter to be sure), I suspect the problem is either between the battery and the solenoid connections or the solenoid-to-keyswitch connections. Let me know what you find and provide more detail if you can if you cannot find the problem. Hope this helps.
Thanks, that is helpful. Could it be the solenoid, and if so is there a way to test the solenoid?
AnswerThe solenoid will be one of two styles. Both are equipped with two large terminals (one for battery connection(s) and the other for the starter connection). One style only has one smaller terminal. With the solenoid properly bolted down (grounded), applying 12V to the small terminal should make the solenoid engage (click) and the starter should turn. The second style has two smaller terminals. The extra terminal is the ground circuit for the solenoid. This ground circuit is completed by the safety switches to enable the solenoi to engage when the blades are off, the transmission is in neutral and, depending on your model, the seat switch is engaged. Hope this helps.
