Re: Evinrude 33hp 1965
Since you've already sheared a flywheel key, the flywheel and crankshaft tapers may be damaged, check them. Making sure the tapers are okay, the flywheel nut must be torqued to exactly 105 foot pounds, otherwise the key will shear again.<br /><br />Use Champion J4J or J6J s/plugs with the gap set to .030 . The spark (if proper) will jump a 1/4" gap with the s/plugs removed. Rig up some kind of tester whereas you can set that 1/4" gap.<br /><br />The OMC part number for the carburetor kit is 439074 which would still be available at any Evinrude or Johnson dealership. It may also be available at NAPA or other stores.<br /><br />When a engine sits for any length of time such as yours has, the carburetor will foul and require cleaning etc.<br /><br />(Carburetor Float Setting)<br />(J. Reeves)<br /> <br />With the carburetor body held upside down, the float being viewed from the side, adjust the float so that the free end of the float (the end opposite the hinge pin) is ever so slightly higher (off level) than the other end. And when viewed from the end, make sure it is not cocked.<br /><br />(Carburetor Adjustment - Single S/S Adjustable Needle Valve)<br />(J. Reeves)<br /><br />Initial setting is: Slow speed = seat gently, then open 1-1/2 turns.<br /><br />Start engine and set the rpms to where it just stays running. In segments of 1/8 turns, start to turn the S/S needle valve in. Wait a few seconds for the engine to respond. As you turn the valve in, the rpms will increase. Lower the rpms again to where the engine will just stay running.<br /> <br />Eventually you'll hit the point where the engine wants to die out or it will spit back (sounds like a mild backfire). At that point, back out the valve 1/4 turn. Within that 1/4 turn, you'll find the smoothest slow speed setting. <br /><br />When you have finished the above adjustment, you will have no reason to move them again unless the carburetor fouls/gums up from sitting, in which case you would be required to remove, clean, and rebuild the carburetor anyway. Good luck.