possible lower unit problem? OMC Cobra

[iguana]

A couple of days ago I hit something that took a pretty good chuck out of my prop. Afterwards I couldn't go fast enough to get up on plan. The engine would rev, but I wouldn't go any faster. I thought I just spun the prop hub. I have since replaced the prop, but I am still having the same problem. The boat shifts in forward and reverse with no problems. What else could be slipping? Is it posible I may need replace the clutch dog and foward gear in the lower unit?

 

[corm]

Re: possible lower unit problem? OMC Cobra

Hi Iguana,<br />You may have broke a driveshaft. Or spun the engine coupler. Is there metal in the LU oil?<br />...have fun...corm

 

[iguana]

Re: possible lower unit problem? OMC Cobra

I'm not sure about the metal in the Lower Unit oil, because I haven't had a chance to take it out of the water yet. If it was a shaft would I be able to drive around off plan at lower speeds? Do engine couplers have ruber bushings that can be spun like the ones on props?

 

[corm]

Re: possible lower unit problem? OMC Cobra

Hi,<br />I've run at idle speeds with a broken shaft my self and seen others. Most common is the spun coupler. Yes it is like a prop hub.<br />...have fun...corm

 

[iguana]

Re: possible lower unit problem? OMC Cobra

Thanks for your help. Hopefully this long weekend I'll have time to take it out of the water and pull the outdrive, so I can get look at the coupler. I'll let you know.