Johnson 1967 20hp will not stay in gear

[gwilrob]

My motor jumps out of forward gear. help

[kbait]

Remove lower unit, noting any issues w/shift shaft linkage, and disassemble. ********** will have a blow-up schematic. Could be shift fork/cradle, or clutchdog/forward gear. You have to look.

[Faztbullet]

Check adjustment first then it might be a gear or clutch dog....

[boobie]

Forward gear and clutch dog or worn or loose shift linkage.

[geoffwga1]

My motor jumps out of forward gear. help

Had the same problem with a Norseman 40hp that I acquired. turned out to be the forward gear was a bit worn and rounded,also the clutch dog.Cure,not the $360.00 for a new gear but the price of a Dremell.Redressed the angles on the gear and reversed the dog.Works fine now.Before doing that make sure your cables are all adjusted correctly as has already been said.
Good Luck Geoffwga1.