Hi all

I have a 1977 merc 1500 on a wellcraft v20.Problem I'm having and need help with is when I put her in reverse I have no throttle.The engin idles at 800 rpm and the slight drop in rpm when it drops into gear it will some times stall out.This thing sure makes it difficult to get it off the trailer or out of the slip.I'm sure it is some kind of adjustment to cables.Becuace when i throw her in reverse the handle is almost horizontal.But I'm lost as to what to do.
Any and all feedback will help.