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JohnF2015
JohnF2015, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1048
Experience:  Owner/Service Technician at S & J Small Engines
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I have a Sears 42 inch lawn tractor with what I think is a

Customer Question

I have a Sears 42 inch lawn tractor with what I think is a Briggs & Stratton engine. It appears that the battery charging system on the motor is not working. Is this something that can be repaired by replacing a part? Where would the part be located on the engine. The motor is a 420cc overhead valve SN:4P90HU/1301101A0363. Thank you *****
Submitted: 1 year ago.
Category: Small Engine
Expert:  JohnF2015 replied 1 year ago.

Hi, my name is***** will be assisting you.

Yes, it can normally be repaired but based on the numbers that you have provided you do not have a Briggs engine, you actually have a Chinese built engine on this machine. Do you have a volt meter? Can you perform some basic test if I provide instructions on how to do them? Can you provide the model and serial number from the frame of the machine so that I can better assist you?

Customer: replied 1 year ago.
Model no of engine is 4P90HU, SN: 4P90HU/1301101A0363. The system was checked with a volt meter and showed no power being sent to the battery.
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Expert:  JohnF2015 replied 1 year ago.

Okay, then you can replace the stator on the engine which is located under the flywheel on the engine. It is MTD part number 951-12224 which can be purchased through an authorized MTD dealer, online at several different parts sites or back through Sears directly. I am providing a few links to different websites that you can go to purchase the part.

http://www.searspartsdirect.com/mtd-all-products-parts/951-12224/0071/247/model-4P90HU/0736/1503500.html

http://www.jackssmallengines.com/Parts-Lookup/95112224/2634220/ps

http://www.partstree.com/parts/mtd/parts/951-12224/

http://www.ordertree.com/catalog/product/view/id/86673/s/mtd-951-12224/

I hope that you find this information helpful. It has been a pleasure to assist you. Please take a moment to rate your experience.