1975 johnson 25hp jumping out of gear

[needachew]

My 25 has started jumping out of gear,its like if you ran over something ,it did it so bad yesterday it broke the sheer pin in the prop .I am thinking it is either the clutchdog or the forward gear or combo of both.has anyone else had this problemand what kind of money am i looking at to repair this problem.

 

[fishdog4449]

Re: 1975 johnson 25hp jumping out of gear

check and make sure the throttle and shift cables are adjusted right, for example make sure its going all the way into forward. if that checks, its the dog. I replaced one on a '75 25 Johnson, was about an hour repair and 30 dollers or so for a new dog. As you know, both forward and reverse gears in that unit are connected to the main gear and spin freely on the shaft, and spin whenever the engine runs. When you shift into FWD, the dog slides towards the fwd gear and engages it to the shaft. Over time (usually cuased by slow shifting) the little teeth of the dog wear away and it will "pop" out of gear when you rev up.

 

[tashasdaddy]

Re: 1975 johnson 25hp jumping out of gear

new forward, reverse, clutchdog, $600. plus installation, looks like a gamble on a donor lower.

 

[5150abf]

Re: 1975 johnson 25hp jumping out of gear

Don't know what yours looks like but I had a 10 horse that did that and I changed the clutch dog and that fixxed it.
It had rounded the corners bad enough that it wouldn't engage anymore, if you are very lucky that will fix it but again I don't know what shape your lower is in.
The only way to know is to pull it apart and inspect it, good luck.

 

[tashasdaddy]

Re: 1975 johnson 25hp jumping out of gear

it is recommended to change the gear set. there have been a lot put back together with just the dog, that came back apart.