I don't think that's the correct cushion. The one I found is this one, 3684763 lists the pad as 2 1/4" x 1 1/4" but no thickness is mentioned. I'm pretty sure 1/4" is probably correct.

The #is 378516 on sect.11 sheet 2.11 ( I Googled that # Thats where I got the rubber 2x2 x1/4 ) either size would pro. work...
also couldn't find #3692225 body shim , { I figured it is metal looks the same size ..I would like to know...the #3684763 you found is for models 3800-4000-5000-6000 sect. 11 sheet 2.12...


" STUCK IN THE '50'S "