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Hi, I posted about a battery problem here and determined that the battery had likely been damaged by overcharging. Motor is 3 3R777 0005. I couldn't find a new diode where I live, but had an older tractor diode which hadn't damaged the same type battery before. The problem remained: 17 volts plus charging. I want to know if someone here can instruct me how to retrofit a voltage regulator to this tractor to end this problem?? Thanks

Maybe this manual will help you out. After reviewing the manual tell us exactly which type of charging system you have, which will make make it easier for us to help you. https://www.briggsandstratton.com/c...a/en_us/Files/FAQs/alternator_replacement.pdf

Using the current dual stator connections you would need the 790292 regulator or after market version. Now it will need to be grounded to work.

Thanks, gents, for the replies. It is apparent I have the dual circuit system: red wire with a diode lump, and black wire plain. I can see a spot where a regulator might fit, but there is none.

StarTech said:

Using the current dual stator connections you would need the 790292 regulator or after market version. Now it will need to be grounded to work.

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Thanks, do I assume it will be grounded by attaching it to the block? That is, is the housing metal and provide a ground?

Followup

Though the regulator took weeks arriving, I finally got it, and found a mounting point on the oil filler tube. I threaded in the correct stove bolt to mount it, found a small screw on the side of the regulator housing, and used that as ground point to the block. Fired up, the charge read a rock solid 12.5 volts, and I am a happy camper.

I have the same mower with the same problem. Would you be able to post up the part number and related info like vendor name? And maybe a picture of how you connected the wiring? (Just did a search on google for the part number Star tech listed and came up with this: https://www.amazon.com/DB-Electrical-Voltage-Regulator-Stranton/dp/B073DD6TCM. Is this what you installed?) I'm not real savvy when it comes to wiring in this sort of thing so it would be really helpful to see/read instructions on installing this. I need to install this when season starts to avoid overcharging the battery. What I did towards the end of last season was to connect the battery to start the mower, then disconnect the battery while mowing so as not to overcharge the battery. This worked ok but would sure like to put in a regulator like you did.

Hi, Star tech posted the part number 790292 regulator, I searched it on Amazon. There is a hole through the regulator housing, which a stove bolt can be chased through to the aluminum head, providing ground. Remove the diode, red wire with a lump in it, and the same terminals can be used to the regulator, male to female just like we like it.

Purchased this regulator and it arrived today: https://www.ebay.com/itm/1560208280...lp:2332490&itmmeta=01HVBJDYJK5R02WV9GTVHJMAAF
Question is which wire goes where after cutting out the diode?

Well first you weren't to remove the diode.

But now a different setup like the one below.

Ok. So it looks like the yellow wire connects to the diode and the red goes to the battery side.

I haven't cut anything yet. Wanted to be clear where this regulator should wire in. Your diagrams are helping but I'm not too up on the electrical symbols shown (except the ground symbol). It looks like the second to the last diagram is the one I should use with the yellow wire going to the alternator (leaving the diode in place) and the red to the battery. Am I reading that correctly? And the body of the regulator grounded to the mower.