I always thought those had starter generators on them. If they do, the starter is what charges the battery. Believe it or not, Briggs and stratton still keeps a lot of those manuals. Rick 69L46Vert is the master with these David Bradley's but I haven't seen him on the forum in a while. I would PM him, and in the meantime maybe someone else can help. I'm a lot better with Tecumseh and Onan engines.


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Nice tractor by the way!!


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Nope, just a starter. This is the early 5.75hp Briggs engine. The charging system relies on an armature to trickle charge the battery. Similar to the magneto, the generator armature uses the magnets on the flywheel to generate electricity. What I don't know though, is if I am out of luck, or if there is a replacement or way to fix mine.

By the way, thank you! It's been a week of tear down, paint and no life other than that lol I got a ton of attachments with it that came new in 61 with it. Bought from the original owner's daughter, who was using it for garden art.

 

If you don't have an IPL, go to this site and download one.
http://www.briggsandstratton.com/us/en/support/manuals/engine

 

I have the manual downloaded already at home Bill. The coil I can get new, but the "armature flywheel generator" as it is called, is no longer available, and I don't know how to figure out how to wire that.

 

Is it a single wire unregulated DC only stator?

If so then the one wire goes to the ammeter then battery, or just to battery (+).

Is there a regulator?
How may leads on the stator and what color?

 

The starter is only for starting. Battery goes to the starter solenoid (push button), and then to starter. The charging coil (pictured in first post), looks like it has two wires coming out from inside the block, and then from there, goes to the charging light, (no ammeter on these tractors) and then to the battery.

This is the closest I can come to a wiring diagram for my tractor though:
OEM Parts

 

Stator not Starter.


Maybe try this?
http://www4.briggsandstratton.com/miscpdfs/RNT/alternator_replacement.pdf

 

Or this:

https://www.smallenginesuppliers.com/html/engine-specs/briggs/briggswiringexplanation.pdf

Do you have a volt meter?
Does your armature have 1 or 2 wires off it?
Wire(s) color?

 

It is neither one of those. This engine is from 1961. It's not a new engine by any means. That's why I included the parts diagram. It's the closest I can get to finding a wiring schematic for that armature generator. Looks like one wire is black, and the other may be yellow or red.

 

The manual I have for the old briggs engines is kind of generic, but works for me in most instances. You can download it here, its 10.4 meg.

http://www.ganino.com/games/Briggs ...and Stratton Repair Manuals/270962 Single Cylinder L-Head BRIGGS & STRATTON.pdf

Unfortunately it doesn't seem to offer the option you describe and it doesn't have electrical schematics.

It describes this as being the closest to your description:
1-1/2 Amp Alternator
used on Model series 130000 before date code 91032500
1-1/2 amp alternator with solid state rectifier.
1 1/2 amp DC+ charging for battery
two red leads from stator
red connector output lead

By time it gets up to having 1 red and 1 black wire, the red is DC for charging and the black is AC for lights. But that seems too recent for your rig.

I cant read your engine code label in you picture.

I don't see any system that uses a capacitor (condenser) on the charge circuit. The use of caps and diodes to convert AC to DC is standard practice though. But the cap is probably unnecessary for battery charging on a tractor.

 

Engine tag is;

Model 143407
Type 502625
Serial 64606

I thought it was able to be read, but I guess I didn't think about the quality after it got uploaded.

 

before you do much more look at number 490 and make sure its good
its kind of a ballast resister. that dodge uses know to go bad !

john

 

I'll be sure to mention that to my dad tomorrow. Are those still able to be had?

 

Hi threehead_99, do you have the B&S Repairmans Manual for B&S engines 1918 to 1981? if not Google B&S Repairmans Handbook of out of porduction engines 1918 to 1981 it will cover your engine I'm not sure your engine had any kind of charging system Sears sold a battery charge to go w2ith many of the DB's to keep the battery up. Nice Looking DB. Dose the engine run?

Ok after looking at the parts link you had yes I'd say your engine had a 3 amp alternator / gen part #475 is a diode rectifier this would be an unregulated system (the battery controls the volts) so on your stator / gen coil the wire from the coil assy will produce AC voltage and the diode is inline converts it to DC for charging. A # 276-1661 diode will work good.

 

Hi threehead_99, do you have the B&S Repairmans Manual for B&S engines 1918 to 1981? if not Google B&S Repairmans Handbook of out of porduction engines 1918 to 1981 it will cover your engine I'm not sure your engine had any kind of charging system Sears sold a battery charge to go w2ith many of the DB's to keep the battery up. Nice Looking DB. Doe the engine run?

I don't have that, but have look extensively through the original owner's manual for the tractor, and it briefly mentions a charging system, as this was a factory electric start. There's a green light on the dash that comes on when the system in charging. Further back in the posts, you can see pictures of the flywheel generator I'm speaking about. My dad owes me a favor or two, so he's coming over to trouble shoot that piece tomorrow. I'm hopeful he can get it working, but if not, I will get it rebuilt locally.

Thanks on saying it looks nice. Got about 50 hours in it in about a week, and now because of the engine troubles, I can't drive it. I purposely waited to do the engine so it would be motivating to finish the tear down and paint. Ordered a new magneto, so hopefully this weekend I can fire it up.

 

Its an interesting system. I cant seem to find a reference anywhere.

#512 looks to be an optional charging circuit that utilizes the permanent magnet in the flywheel for the magneto ignition.

But it looks to have a condensor and maybe ballast resistor. Both parts more often associated with points systems and ignition coils.

If it was me I'd just test the 2 wires coming off the stator with a DVM with the engine running to identify what was coming off the stator and then wire accordingly.

 

Hi again I forgot to check our sites small engine section here's the manual https://docs.google.com/open?id=0B6NaqjIxWV1yeVdtMUNaTzlpWmc
Read my PS to the earlier post, if you get an AC voltage reding from the ben/coil then all you should need is a diode and some fuses.

 

I was looking in the Briggs parts manual.
In that block diagram 512, in the lowest right corner is part 475. Rectifier.
I almost missed it, but I was looking at the list for part 474 to see if they called it anything "different" from usual. Armature-Flywheel Gen.

 

Funny you should mention points. Those are behind the flywheel. It's a points magneto system. my dad (60years old and been working in electrical all his life) said from the parts diagram it looked like a condenser on that circuit, but without seeing it in front of him, he can't ell for sure.

It's similiar to the 66 Bolens I had with a TR10D, but that had a starter generator, not generator armature.

 

The pic for the rectifier is an image of a diode. Might just be a single diode in one of the wires off the stator.

 

Not all rectifiers are diodes. Just ask your old tube type radio.
This 40 year old technology. Back in the day, it would be called a rectifier.

It's interesting that the assembly shows 2 fuses. 1.5A & 7.5A.
I wonder if the lower capacity circuit was used to "excite" the alternator.

 

Yes, not all rectifiers are diodes, but the rectifier you show in your pic is indeed a semiconductor diode.
Rectifier more describes the use of the device than it does the device itself.

I'll be interested to see the complete circuit if someone figures it out.

 

I'll have my dad draw up a diagram for it and the tractor. I figure with as much help as u get on wiring on this forum, I might as well be at least some use to people. As far as the diode/rectifier, I have no clue what the difference is. I'm a welder for a living, and my dad is the one that does electrical. Stuff like this makes me wish I paid a little more attention when I as younger though.

 

I have an electric start and when it was bought new you would get a trickle charger to charge the battery at night. I have the sears catalogs and they list the trickle charger. I have not seen a Gold bradley with a charging system from new, But Not to say there very well could be now.

Also the electric start tractors came with a release lever for it to work when cold. The starter was real small with no torque. I have both electric and pull start Tractors.

The variable speed lever is totally different for a electric start. My electric start 59 is the only gold tractor I have actually seen That came electric start, Its a weird starter system and took me a long time to gather the pieces. I Have two now but only enough to make one work.

I had bought one on this site through a post discussing charging and starting system.
He had a pull start tractor with a "electric start kit" that was available. His tractor didn't have the lever and he was missing the two pulley's. I bought his tractor he was disgusted . If you would like some more pics I will start a thread.

 

I was checking some literature and found that it was only 1959's that had the start only with no charge system.

1960 and up were all starter/generator except pull start tractors with the starter kit.