As DJ said you have got shot gear clutch dogs these are inexpensive and not hard to fit especially as your engine the 25 hp should have a splitable gearboxIf you are in a remote area or money is tight you can reverse the clutch dog and this will remove the problem from forward to reverse I have done this when I was living in the western Isles and parts were hard to come by.Mind and fit new seals when you have it apart.Originally posted by fishon71:<br /> I have an old 1979 JOhnson 25 HP and a 9.9 HP. They both jump out of fwd gear when RMPs get up to about 2K. Is there a common problem/fix for this like an adjustment or is there a major wear issue?