Larry - Sometimes I forget that not everyone knows how to do this stuff, so I'll walk you through it. Goto this page on the forum:http://www.perr.com/phpBB3/viewtopic.php?f=15&t=13
The second link down is the Power Portal. Use the ID and PW given there, after you click on the link. Once you are logged-in, select ePart. Don't worry about the fact it says for distributor and dealers.
When you click eParts you will be given an input box. Put your engine number just like this 243432-0762. When you get into the parts list select ignition Breaker, Magneto Armature. Select part #333 - Bruce