How do you replace it JohnDeere LA126 - Garden

I found this site to be the most informative to answer your question: http://www.tractordata.com/farm-tractors/tractor-brands/johndeere/johndeere-tractors-year-sorted.html

There is a video on this.
John Deere Mower Magneto Replacement

Sal, 3rd and 4th link is the manual shows filter an pump, other links are where you can inquire to get more info. on fuel line diagram.
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JohnDeere Z225 Z200 Series Zero Turn Mowers JohnDeere com

Engine Information Search

http://www.homedepot.com/catalog/pdfimages/5b/5bef7eb2-6221-4934-98cd-5fcaaf2ac9eb.pdf

http://manuals.deere.com/cceomview/OMM154566_A7/Output/Index.html

http://www.tractordata.com/lawn-tractors/tractor-brands/johndeere/johndeere-lawn-tractors-drive-sorted.html


John Deere lawn tractors by series

look at the pulleys the belt runs over and you will see one that is moveable. you will figure it out from there.

Replace the coil

check all the belts one could have come off or need replacement

You can purchase a replacement manual from your JD dealer or read the manual online for free at www.johndeere.com