Re: In reverse It jumps in and out of gear 1975 iL6 150 H.P.Merc.
Tim, The gears on that motor will "click" into F-N-R. I would disconnect the gearshift cable at the motor, put the LU and control into Reverse, and see where the barrel adjuster is set. Perhaps it is a combination of a worn gearcase and/or control and a misadjusted cable.