Foley 394 Sharpener

[ProMac1K]

Could anyone give me any advice on how to setup the adjustments on a 308/394 chain sharpener? Both models adjust the same I believe, one may have a different number display. The top plate angle is self explanatory, but i'm trying to figure out how to use their scale for the head tilt and wheel centering on the bottom. There must be some correlation between Foley's adjustment scale and the sharpening instructions for the chains, but i'm stumped. If I remember right, the head tilt sharpening angle is 55 degrees, but these sharpeners only go up to 45 degrees. I ran one years ago at a job....seems we only adjusted the top plate angle and the wheel center when changing from right to left cutters, and we left the head tilt the same on all chains.

Would anyone have a manual that they could copy some pages from, or sell me a copy?

Thanks