Who knows their onions on a key start Ariens charging system? - Snowblower Forum : Snow Blower Forums
 
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post #1 of 4 Old 01-26-2016, 09:56 PM Thread Starter
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Who knows their onions on a key start Ariens charging system?

1336Pro
Model 926501
serial 005097
Engine, Tecumseh, model OH358SA, Spec 223843G
I picked this machine up used and have been fixing it's little issues here and there; new diff, and a few bushings, Runs great.

It was at one time a key start machine with a battery. Someone had put a 120 volt starter on it at one point.

I'd like to put it back to key start eventually.

My question is how to test the alternator.
According to this diagramhttps://polr.partstree.com/v1/iplima...O2k6MTAwMDt9fQ, The red wire is 12vdc for battery charging with no regulator and the yellow is my ac output. Problem is; at full throttle the red wire only shows about 3.4 volts dc. The yellow wire shows 12+ ac volts at full throttle. With an ohm meter to ground the yellow wire shows 0.00 ohms, the red wire shows open.
Is my alternator shot?
Can I throw a bridge rectifier on the AC (yellow) and charge the battery from there?
What is the output wattage spec of the AC and DC sides?

Thanks.
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post #2 of 4 Old 01-26-2016, 10:25 PM
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Have you tried a continuity test on the red wire to ground ??
If it's physically "open" it can't produce any voltage but you said it was reading 3.4V
are you taking that 3.4V from the red to ground ??

Have you pulled the flywheel and checked the wiring and tested the diode yet ??

Yes you can put a rectifier on the yellow and use it for the battery but it wouldn't be able to charge the battery, run the light(s) and hand warmers all at the same time.

This is what I was able to find on your engine.

It looks like it's a 3/5 amp. 3 amp DC by way of diode on the red and 5 amp AC on the yellow.

https://www.partstree.com/parts/tecu...-parts-list-2/

IF, if you're coil checks out bad it looks like it runs about $70 for a new one or ?? on Ebay. This is what I found but please check that a 611271 fits your engine before ordering if you go that way.

https://www.google.com/search?q=6112..._AUIBSgA&dpr=1

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Last edited by Kiss4aFrog; 01-26-2016 at 10:29 PM.
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post #3 of 4 Old 01-26-2016, 11:01 PM Thread Starter
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Rechecked it.
Put the COM lead on the engine block and the other lead to the red wire with it unplugged from the blower chassis. Reads open. Then with it plugged back into the blower chassis and running it shows -3.4 volts dc. I missed the - before. So negative 3.4 volts dc, what is that all about?
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post #4 of 4 Old 01-30-2016, 06:10 PM Thread Starter
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It turned out to be a broken wire in the stator, something got inside the flywheel with it and broke a few wraps of wire on one pole.

I unwound that pole, fixed the break and rewound it by hand, and **** if it don't work.
Not pretty, but you can't argue with results.



PS, Tecumseh, not drilling and tapping the holes in the flywheel for a puller was just plain dumb.
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