Is the voltage regulator adjustable 150 gas

Tom from Buckeye Lake · Mar 31, 2013

I don't use my 150 too often. I can tell when battery is low by how it cranks.

After it is running the charge rate on the amp meter moves just off center towards positive, even at 1500 rpm. The needle could swing much more to positive. There are no numbers on the gauge, just a mark. I put a volt meter on the battery while engine running 1500 rpm, shows 12.2 volts, I think it should be around 14v, running.

Can I adjust the regulator?

miner09 · Mar 31, 2013

No adjustment. Buy a need regulator if the gen/alt is working properly. You can get it checked at a local auto parts.

maxwell99 · Mar 31, 2013

I bought the replacement voltage reg for my TO-35 at autozone,
reg was made in usa by borg warner, cost about $60 but was the best one I found local.

someday I would like to install a alternator on my tractor with a built in reg. but my old tractor had the gear box on the back of the generator that runs the tach.

so I do not know if I could replace the tach with an electronic tach that would run off some other electrical source.

generators, voltage reg and gear driven tach are old technology.

supergrumpy · Mar 31, 2013

you could test the generator output

run good solid ground wire from F terminal of the generator to good clean ground, that would produce max output from the generator and meter should swing to the right at say 1500 rpms

Tom from Buckeye Lake · Mar 31, 2013

Thanks guys

I'll try the generator test.

Maxwell, "old technology" hey we all have old stuff

Tom from Buckeye Lake · Apr 1, 2013

Update, I tested generator by grounding field at Gen, amp meter went full to positive and 13.9 volts at 1500 rpm, I then put field wire back on Gen. Started engine, battery showing 11.8 volts at idle, and amp meter just a little on neg. side. Set engine at 1500 rpm, amp meter as before, just off 0 on the positive side and 12.2 volts at battery. While still at 1500 rpm, turned on 2 head lamps, tail light and flashing rear light, amp meter held at just on positive side, battery still at 12.2 volts.

I use the tractor, most of the time, just pulling a wagon, cleaning up my woodlot. It rarely gets over 1000 rpm except when the brush cutter is attached.

Do I just need to run her harder, battery is questionable, 6 years old, might be time to replace.

supergrumpy · Apr 1, 2013

ok, generator did exactly what it was supposed to

problem looks to be in wiring or inside the regulator, start with easy stuff first

take all the wires off one at a time and clean the connections, one wire is usually underneath the regulator, also clean the regulator mounting base

if that doesn't improve things you have some choices:

1. open up the regulator and clean the contacts inside, the original regulators are pretty sturdy, you can try changing tension on the regulator points but it is delicate job

2. buy a replacement but I keep hearing bad things about the ones you can buy nowadays

3. my redneck way - first take battery out and charge it good, put battery back in

make up a grounding wire with good clamps on each end, after starting the tractor ground that field post, watch ammeter and keep rpms at a point where ammeter is putting some charge back into the battery

after battery is back up to snuff remove the ground wire and go get some work done

Is the voltage regulator adjustable 150 gas

Tom from Buckeye Lake

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miner09

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maxwell99

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supergrumpy

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Tom from Buckeye Lake

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Tom from Buckeye Lake

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supergrumpy

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