I have bought an old OS 40 fourstroke. It is from the first generation before they were called "Surpass". My problem is that it was in pieces and does not appear to have any markings regarding how to fit the camshaft. What is the right position of the camshaft in relation to the crankshaft?

Regards, Jens

The timing instructions can be found in the FAQ section of the O.S. web page. You can get there from the Bestrc page below.

Thanks a lot! I'll assemble it immediately.

Regards, Jens

I have an OS40FS that needs anew piston,where can I get one.