Model #917275972 CRAFTSMAN Lawn, Tractor

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compatability 917270670 Craftsman Lawn tractor


917275972 not charging. 917275972 Craftsman Tractor


Thanks for the inquiry and for being a valued member.

I am sorry to hear of the issue you’re having with the tractor charging the battery. I know how frustrating that is.

This Briggs engine uses an alternator and regulator/diode to charge the battery. You can test these components to see which is at fault. The magnetos would provide spark, but wouldn't regulate the charge of the battery.

To find out if the problem is the regulator/diode or the alternator, do this:

With a volt meter, read the voltage across the terminals of the battery with the engine not running. You should read around 12.6 volts dc.

Crank the engine and set the throttle at full throttle. Read the voltage across the battery again. You should read around 13-14 volts dc.

If you still read the same as you did with the motor not running go to the regulator mounted on the side of the engine and pull the 2 yellow wires off. Connect the volt meter (set to ac volts) across the 2 yellow wires. Crank the engine and read the voltage across the 2 yellow wires. You should read around 28 volts ac. If you read the correct voltage, the alternator is good and the regulator is the problem. If you read less than 22 volts ac, the alternator is defective.

The alternator is on the engine mounted under the flywheel. You have to remove the blower housing of the engine and pull the flywheel to replace the alternator.

I hope this helps and thanks for using We appreciate your business.  

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Jeff Wallace Sr -
Sears Technician
April 26, 2015

how to change the transmission range selector 917275972 Craftsman Tractor


You should be in Neutral to change that range lever from high to low (or low to high). If it won't shift, then you could have a problem with the transaxle.

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Lyle W -
Sears Technician
November 22, 2013

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