OMC 800 Rough shifting problem

[reference123]

Have a 78 OMC 800 coupled to a OMC 225 engine (small block chevy 305). When i shift into forward gently, the gears will grind a little then catch. If I pop it into forward, it goes without grinding but kind of with a clunk. Same with reverse, no grinding but kind of clunks. Once in gear, it seems to run smooth. Would this be related to my shift cable or something else?<br /><br />Thanks

 

[WSUDERMAN]

Re: OMC 800 Rough shifting problem

Check your idle. It should be as close to 600 rpm as possible. When you shift, make it a positive one. not slow or fast, just positive. <br /><br />Also, if your carb does not have a throttle return spring on it, add one. This will help keep your idle speed consistant.

 

[Lou C]

Re: OMC 800 Rough shifting problem

Those use a dog clutch shifting mechanism and you have to shift it quickly, not slowly or you will get a grind. The same is true of the 1st generation OMC Cobras and the Merc Alpha drive, and most outboards.<br />And I agree with getting the idle down as low as it will run smoothly for easier shifting.