Removing Flywheel on Tecumseh Lawnmower

I have been working on a tecumseh lawnmower with a LEV120 engine and i cannot get the flywheel off of it. I want to remove the flywheel so that i can look at the valve tappets and the crankshaft, i have removed flywheels on briggs and other engines but this one just wont come off. It does not have threaded holes so i am not using a puller, i am using a screwdriver and a mallet to get it off. I put the screwdriver underneath the flywheel and pull up while tapping the shaft with the mallet, and the nut is on flush a the top of the shaft by the way, and it just wont budge. The flywheel key does not appear to be sheared and i have sprayed PB blaster down the keyway to try and loosen it up. I do not have a knocker for it and i didn't think that i would need one because i am doing the same thing now that i would do with the knocker. Any helpful hints on this one? Here is a picture of it. Tap those three holes and use a puller like this. fly wheel puller - Bing Images Some heat on the flywheel may help. Have a helper hold the flywheel with two hands on opposite sides and lifting. Hit the shaft with a hammer. When i do this should i use a real hammer or could i use a rubber mallet to lessen the chance of cracking the shaft. Should i still thread the nut on the end of the shaft. Leave the nut on the shaft and unscrew the nut just enough so that you will hit the nut instead of the end of the shaft. Another option is to use a large center punch on the center of the end of the shaft. The idea is to not damage the threads on the shaft when you hit it with the hammer. Use a real hammer. The shaft is steel. will that hurt the threads on the nut, if so should i use a different nut that i don't need. The top side of the nut should be flush with the top end of the shaft. You should be using a real gear puller to safely pull it off with out damaging it. The gear puller can be bout at Sears or Harbor Freight tools. It's description is a threaded rod with a nut on 1 end and a cone shaped floating piece of metal on the other end. It also has 3 legs that go over the edge of the gear or in your case a flywheel. The cone shaped end sits in the indent on the end of your lawnmower's main shaft. Just tighten the nut of the puller with a wrench and the flywheel will just pop off the shaft with no strain on your part. The Harbor freight sells a 4 Piece Three-Jaw Puller Set for about $27.00. Use this link to view and order it; 4 Piece Three-Jaw Puller Set

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