need help adjusting carb!!

[new2boats2]

im back guys more questions i need help adjusting my carb on a 40 hp 1960 jhonson super sea horse.

 

[bktheking]

Re: lower unit problems please help!!!

Re: lower unit problems please help!!!

Spun prop, got another one to try?

 

[new2boats2]

Re: lower unit problems please help!!!

Re: lower unit problems please help!!!

i have not done that but it feels like it does when you pull to start it.

 

[lindy46]

Re: lower unit problems please help!!!

Re: lower unit problems please help!!!

What BK means is the hub on your prop is spinning free of the blades. There is a rubber bushing in there that wears out over time. It is designed to protect the motor if you hit something in the water. The bushing lets go so you don't damage the motor. You can have the prop re-hubbed at most Marine dealers for about $40-50.

 

[wilde1j]

Re: lower unit problems please help!!!

Re: lower unit problems please help!!!

Marine dealer don't fix props, they send them to prop shops. I always deal direct with a prop shop.

 

[bktheking]

Re: lower unit problems please help!!!

Re: lower unit problems please help!!!

i have not done that but it feels like it does when you pull to start it.

Sorry, Lindy explained it in more detail, that's what I meant by a spun prop.

 

[new2boats2]

Re: lower unit problems please help!!!

Re: lower unit problems please help!!!

that makes sense i will check that out today. thank you very much for your help. as soon as i find out if thats the problem i will post it.
once again thank you

 

[new2boats2]

Re: lower unit problems please help!!!

Re: lower unit problems please help!!!

well i tried two diffrent props same problem. i marked the inside with a marker and it seems like nothing moved. i am thinking some kind of linkage or gear. ANY MORE IDEAS ??? i will try anything please help

 

[lindy46]

Re: lower unit problems please help!!!

Re: lower unit problems please help!!!

Hmm - those are classical symptoms of a spun hub. Have you drained the oil from the lower unit? Check and see if there are any metal filings in the L/U. I guess it could be worn gears. You haven't removed that little Phillips Head pivot pin, have you?

 

[restornator]

Re: lower unit problems please help!!!

Re: lower unit problems please help!!!

are yoou shifting manually or with remote controls? also when this happens, does the motor rev up uncontrollably?

i had the same thing happen to me a month ago. I thought the shear pin had sheared, but i adjusted the shift shaft and the problem went away. This did happen after i turned the clutch dog around

 

[F_R]

Re: lower unit problems please help!!!

Re: lower unit problems please help!!!

If it isn't the prop hub or drive pin, then it has to be something seriously busted inside. Only a tear-down and inspection will tell.

 

[new2boats2]

Re: lower unit problems please help!!!

Re: lower unit problems please help!!!

i did change the oil in lower unit i did not see any shavings and what phillips head pivit pin are you talking about ?

does any one have a diagram for that motor 1960 super sea horse 40hp

 

[F_R]

Re: lower unit problems please help!!!

Re: lower unit problems please help!!!

Well, we can only go by what you tell us. You insist there is nothing wrong with the prop and/or drive pin. So that only leaves catastrophic gear damage, or a broken drive shaft, or stripped splines in the crankshaft.

--OR-- it isn't actually being shifted (linkage) as somebody suggested.

Those are the possibilities. You have to do the inspecting to see which is correct.

There is a small phillips head screw on the side of the gearcase that people love to mistake for the drain plug. They always regret taking it out.

 

[new2boats2]

Re: lower unit problems please help!!!

Re: lower unit problems please help!!!

well i will recheck all the options everyone gave me. And get my wallet ready for new parts. Once again thank you to everyone who helped its nice knowing im not really on my own with this project. thank you will post any updates

 

[new2boats2]

Re: lower unit problems please help!!!

Re: lower unit problems please help!!!

hi again i found the problem the shift rod has a clamp where the top and bottom meet the top bolt of the clamp was loose. all i did was tighten the bolt and that seemed to make the diffrence well thank you to every one have a nice day