Re: 1964 3HP, fly wheel problems
Well, there's two ways to get that flywheel off. The right way and the wrong way that also works. <br /><br />The right way is to use a puller that acts on the three screw-holes in the middle of the flywheel. A cheap automotive harmonic balancer puller works well for this. You'll likely need three 1/4"-20tpi bolts around 3" or 4" long to go with it.<br /><br />The wrong way is to put the nut back on. Leave it loose so it stands past the end of the crankshaft. Then pull up on the flywheel (to take the shock load off the crankshaft) and smack the nut with a hammer. Best to put a piece of brass stock between the two to protect the nut. For a little engine like a 3hp, this works. I never do it myself. But then again, I've got a puller.<br /><br />The flywheel nut torque is 40-45ft lbs. It's a critical torque. This sort of info is in the service manual, which will also be very helpful for figuring out the stuff underneath the flywheel. Check those coils carefully for cracks!<br /><br />Here's a supply of good links:<br />
3 HP Tune up page<br />
Tom Travis' excellent 3hp page<br />
Joe Reeves Wobbly Armature Plate Fix <br /><br />Those are great engines! I like to run em' with a bit more than 50:1. Check out the oil mix FAQ in the FAQ forum for details.