Re: omc cobra outdrives
Cobra drives will run 100% as long as you take care of them! I have two OMC Stern Drives on my boat and as long as you fill them correctly and they are correctly configured for shifting, they will always just work! Also remember to replace the water impeller which is extremely easy, takes 10 minutes if that!
Some links that you can check out.
(Explains all about Cobras, filling/draining and making sure they shift correctly)
http://www.hastings.org/~stuart/cobra/
(This is a place you can get awesome diagrams of your out drives from and parts)
http://www.sterndrive.info/
Enjoy! Remember ALWAYS fill from the middle screw never the bottom screw and keep the dip stick out so no air pockets get in! Also, the left side where the cobra emblem is, don't mess with the screw it has a washer and will fall down inside and it's a PITA to get it out!