I have a 25 hp 1971 evinrude that runs great but pops out of gear. It used to not do this but one day i was coming down the river wide open and all of a sudden it was like hitting a clutch or something . The motor revved up rpms but prop was spinning like it is supposed to. Everyone told me it was the clutch dog and cradle. I took foot apart and replaced both of these parts and inspected forward and reverse gear . Everything looked fine so i put parts in and tried it out but it did not fix the problem. So i inspected bottom and top of the crank shaft that runs down foot and it also looked fine. As long as u barely give it gas it will push boat fine, but when u get it under a load it acts like u clutch it and i reduce throttle back down and it starts to push boat again. Any suggestions because the problem started occuring all at once. Motor runs great and i would really like to get it fixed!
