If you're lucky, you can survive this time without the puller, however it is still a good idea to make one up.
To try it without a puller, soak the centre in penetrene for 20 minutes (or WD-40 for a couple of hours) then grab 2 long, flathead screwdrivers, and place then under the sides of the flywheel.
Get a mate to push one down (not too much, you want to apply pressure, not snap the top of the crank case plate) while you put pressure on the other, and using your free hand, bash the top of the crank shaft a few times with a wooden or rubber mallet.
If you don't have a rubber mallet, or thats not working, try popping the nut back over the end of the shaft, to protect the thread, and use a regular hammer, but be careful not to take it to far, too much pressure on the screwdrivers will warp or snap metal, and to much force on the hammer can bugger the crank.
Remember, this is the "Bush-Mechanics" way, and you need to use careful judgment.
