I have a Toro 14-38 HXL (model 71193 and up) with briggs and Stratton (model 28N707, type 0131-01, code 9703142E). Headlight do not work. Replaced headlight assembly, fuses, and relay to no avail. No power to switch to test switch. My thoughts now are diode and/or stator but i am not a mechanic. any help would be appreciated. Thanks. Please email responses to DarrellLCrum(at symbol)gmail.com.
Posted May 26, 2016 - 06:45 PM
Posted May 27, 2016 - 07:01 AM
Thanks for the reply. I reviewed the links you provided. The service manual did not show anything related to troubleshooting the headlight issue i am having. The wiring diagram maps the circuit for both the headlights and recharging system but did not indicate a way to isolate or track down this problem. I know that I am not the expert here but hoping you or someone else can guide me on finding out why these headlights will not work. I feel (but could be wrong) it is either with the recharging system (stator or a magneto) or a problem with the diode because NO current runs to the switch. Could I be missing any grounding issue somewhere?
Posted May 27, 2016 - 07:29 AM
If the battery is good, the headlights should work without the charging system. Do you have a test light to test the circuit? Put it across the battery terminals, it should light. Now put the ground clip on the engine and touch the pos post. It should light. that tested the ground. Now follow the wiring diagram from the positive post to the switch, testing to make sure the light still lights along the way. When you get to the next component in the system and the light doesn't light, you have found the problem. Sometimes the fuse holder itself can lose connection but the light will show this. The diode is part of the charging system and has nothing to do with your problem if it's wired right.
- Alc said thank you
Posted May 28, 2016 - 05:17 AM
I believe your lights are powered directly off a separate flywheel stator that produces AC current. There won't be a diode in it so test with a voltmeter set to AC Volts with the ground attached to the metal of the engine.
These may help you identify which system you have
Posted May 28, 2016 - 06:58 AM
I suppose I should have looked at the schematic myself. I see Garry is right that it does show a lighting coil. You would need an AC volt meter to test the actual output but I would think it would still light a test light since the bulb doesn't care about AC or DC. Of course, the engine would have to be running to get it. Does the charge side of the circuit work? Should show 13-14v DC at the battery while running.