charging system

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  #1  
Old 03-16-09, 06:20 AM
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charging system

Dear Sirs,
I have a Craftsman 14 hp sitdown mower that is 3 Yrs old. For the last year or more I have to occasionally charge the battery to get it started. The mower doesn't stay idle for long periods as I ocassionally start it up. I'm assuming its not the battery because of its age and it always accepts the charge. I can't find any alternator or generator so I don't understand how this thing charges. I think if there is some sort of magneto , it is probably for the ignition circuit only. How do I find the charging circuit and test the voltage coming out of it? Thanx, Joe A
 
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Old 03-16-09, 06:43 AM
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please post the model number of the mower and of the engine
 
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Old 03-16-09, 08:48 AM
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Indypower,
The mower is a 917-275810 and the engine is a 31P777-0296-E1. I don't think Craftsman make their own machines. Thanx. Joe A
 
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Old 03-16-09, 09:02 AM
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put a voltmeter on the batt while it's running. see what it says. should be close to 13v
 
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Old 03-16-09, 09:26 AM
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Originally Posted by JoeA View Post
Indypower,
The mower is a 917-275810 and the engine is a 31P777-0296-E1. I don't think Craftsman make their own machines. Thanx. Joe A
Sears makes NOTHING!! They take the lowest bid on what they specify. Yours was made by American Yard Products (AYP) who is owned by ElectroLux (yes, the vacuum cleaner maker). Your engine has an "alternator". It is a big ring of wires & magnets under the flywheel. A new 1 runs about $30.
Part # 696459
 
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Old 03-16-09, 08:44 PM
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Yes, it has an alternator, no it probably isn't bad. The battery is probably bad. If you get more than 2 years out of a lawnmower battery, you're on borrowed time. Yours is failing in the normal fashion...takes a charge but won't hold it.
 
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Old 03-17-09, 07:12 AM
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I agree with Cheese. Three years on one of those little batteries is about all you can hope for.
 
  #8  
Old 03-17-09, 08:43 AM
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Battery

Thanks to all for your advice, I will try a new battery Joe A
 
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