no power to prop

[locogga2]

Just bought my first boat and need some help. I have a 1970 evinrude 210 dolphin 19ft. It has an OMC 350hp inboard motor with an eletric shifter. The prop will lock into gear using the electric shift, N=spins freely F&R=spin free one direction and not the other. Engine starts and runs like a champ, but use to whine at higher RPM's (whining has gone away). Replaced oil in lower unit, no metal shavings (needed oil when i got it). When the key is at the "on" position i can lock the prop into place and turn it, hard to turn. When i trun the prop i can see the knuckle turning where the inboard meets outboard. When it turns i do not see the fly wheel moving nor belt. I took off the lower unit to check the shaft going into the motor. Spins freely with no resistance. Im stuck here and am not sure how the shaft is powered.

 

[Redrig]

Re: no power to prop

its powered by getting 12 volts to the magnetic coils that control the shifting.

there are 2 wires , blue and green that will be in the bilge area above the tilt motor. they control the shifting.

make sure that you are getting a full 12 volts to them. Green for forward and Blue for Reverse.

 

[southkogs]

Re: no power to prop

When the stern drive doesn't have any power to the shift cables the prop should spin freely. If you can turn the ball gear on the intermediate (shaft going into the engine) by hand ... you got a BIG problem.

Did you use Type C gear oil in the lower unit?

Welcome aboard.

 

[Boomyal]

Re: no power to prop

Electric shift ball gear shafts and couplers were fine splined. With the advent of the hydro-mechanical drives, OMC increase the size and strength of of splines. When I pulled my engine (1975 model) in 2005, those splines were just hanging on by a thread. They were very near spinning. When I put it back together, I used the later, larger splined shaft and coupler.

 

[locogga2]

Re: no power to prop

I used type c oil in the lower unit, did not have any when i first got the boat. As for the blue and green wires, they are hooked up to the tilt motor. I do have a wiring issue at the solenoids. I can jumper the solenoids to get the trim to work. Plan to start a tear down and inspect the splines

 

[Boomyal]

Re: no power to prop

You have to pull the motor to check the intermediate shaft and coupler splines, so I would be sure that is your issue before you go thru that.

 

[locogga2]

Re: no power to prop

not quiet sure where the problem is, sorry im a newbie when it comes to boats. eletric shift locks prop in gear, but when i start the boat (which starts and runs great) place the boat in gear with the eletric shifter prop does nothing. i am guessing like cars, when the boat is running and placed in gear that you would feel it engage. i feel nor hear anything

 

[Redrig]

Re: no power to prop

As for the blue and green wires, they are hooked up to the tilt motor.

There is another pair in the general location that control the shifting. Go look at the portside of the intermediate, there will be a big black cable coming from the outdrive and going through the intermediate into the bilge area. Those are the shift wires.

If your prop will lock up when the engine is off , meaning the coils are engaging, I would check to make sure that you are getting the 12 volts to those wires when the engine is running, the previous owner could have wired it wrong or something.

With the engine running and 12 volts to ONE of those shift wires (never do both at same time) That should spin the prop.

If not , it sounds like you have stripped splines somewhere in the drive, good uck.

 

[southkogs]

Re: no power to prop

You're getting 12v to the shift wires through the intermediate housing? (you should get 12v on the F only when you've got the key on - engine not running - and the shift lever pushed forward. R shoud have nothing.)

 

[Redrig]

Re: no power to prop

I was just talking about the location of the wires, where they go through the intermedaite to help him locate them.

 

[southkogs]

Re: no power to prop

I was just talking about the location of the wires, where they go through the intermedaite to help him locate them.

Yeah - I'm trying to get in my head what's going on. If the engines ain't running and he can energize the system and the prop locks, but when he's got the engine runnin' and he energizes F (for instance) and the prop doesn't spin ... it should actually jam the drive train: unless he's stripped like Boom's sayin'.

... I think :suspicious:

 

[locogga2]

Re: no power to prop

Checked the wiring this morning, i am getting 12 volts there

 

[Redrig]

Re: no power to prop

you must have a stripped shaft somewhere then.

next time you run the engine, tilt the outdrive up and see if the ball gears are both spinning when you have it in forward or reverse.

 

[locogga2]

Re: no power to prop

before i start this adventure into the motor i would like to thank everyone for all the help. now...ball gears do not spin in either gear. lower unit if off the boat so that i can start looking for spent splines. does anyone know where i can find a good diagram of the motor to use as reference??

 

[Redrig]

Re: no power to prop

Well if your ball gears are not spinning , you have a stripped shaft in the intermediate somewhere.

You need to get a manual first before tearing into it, preferably an OEM one , but at least a Seloc manual will be a good start.

 

[Howard Sterndrive]

Re: no power to prop

sounds like an engine coupler or intermediate shaft broke on what I assume is your 260HP, 350 CID engine. If you really have a 350hp engine, that would explain the failure. 260HP is the max that drive system was ever designed for.

 

[locogga2]

Re: no power to prop

Can i upgrade the internal parts

 

[Boomyal]

Re: no power to prop

Can i upgrade the internal parts

In a word, nyet! You can replace them with OE equiv, but as was stated, no stringer was ever made to take your stated horsepower. That being said, the likely components mentioned are all wear items. They will all go sooner or later, regardless of the HP.