As long as you happen to have the proper flywheel puller then some times a propane torch is needed. I will remove bolt and washer, attach flywheel puller SBT sells them also and get it tight then use the propane torch to heat the area on flywheel around the tapered crankshaft area. Not the crankshaft. rotating the motor from coupler side or go around with torch. Let it sit for around 10 seconds then ping the center puller bolt or impact it with a not too powerful impact. Try not to leave torch on one area too long to cook anything. That should be enough to let it pop. Reply in tigershark section also so we know you got it off or still need help.