140 Hp stern drive

[RVB]

To all,
Just purchased a project boat last week. It is a 1974 Larson 140 Hp I/O and it is setting in my driveway. I got the engine running and now I am working on the Outdrive. I noticed that I can rotate the prop by hand in either direction regardless of position (forward or reverse). Now I am not a boat guy so I don’t know the ends and outs of Outdrive. I have checked the magnetic and they’re reading 30 ohms on each.
When I put it in gear it spins fairly easy one way and has a little resistance the other. One other piece of information, when I start the engine up and put it in gear, the prop does not move but the engine start idling high. Any help would be greatly appreciated.

 

[racerone]

You have an OMC stern drive.----Well----30 ohms is way too much.-----Should be about 5/ 6 ohms I think.-----Sounds like a shaft spline is stripped.-----Fairly common.-----Time to take the drive apart.------Manuals are available.-----Your location ?

 

[RVB]

I am located in Las Cruces NM, about a hour northwest from El Paso, Tx.

 

[RVB]

I am located in Las Cruces NM, about a hour northwest from El Paso, Tx.

Do you know where I could pickup a good manual? I have the OMC stern drive shop manual, but it seems a bit light on information.

 

[racerone]

The factory manual would be all you need.----Look for manuals on ---E-BAY.

 

[RVB]

Thanks much.