WHAT IS THE DIFFERENCE BETWEEN THE OS 48 SURPASS & THE
OS52 SURPASS? ARE THE PARTS INTER- CHANGEABLE? THANKS FOR YOUR HELP. RON

Ron,

The O.S. Max FS-48 Surpass and the O.S. Max FS-52 Surpass are different engines. There aren't a lot of common parts with them, except bearings and other minor parts. All of the important parts are not interchangeable between the two.