Small Engines (Lawn Mowers, etc.): timing, air hammer, person job

Question
Do you know the timing and how to get it (i have matched the timing markes but it kicks back like it wants to reverse) maybe theres something i mised. The original reason for the dismantel was a broken connecting assembly.

Answer
Hi Dave,

I suspect a sheared flywheel key.  The timing would then be off.  The flywheel is located under the recoil/cooling shroud. Its' bore is tapered and mates with the tapered crankshaft. The keyway in the flywheel and shaft
keeps it from spinning on the shaft.  A nut secures it.  Use an impact wrench on the nut or a strap on the flywheel.  Don't put force on the cooling fins or they will break.  The recommended way to remove a flywheel is to use a puller.   An alternative, is to tap on the crankshaft top, with a brass hammer or use a punch tip on an air
hammer.   The flywheel will need to be held up and supported or upward pressure applied with 2 large prybars. (A 2 person job.) Care is needed so the flywheel doesn't crack or bend.  Also be careful to not mushroom over
the crankshaft top.  Replace the key.  Install the flywheel after cleaning the tapers and re-tighten the nut to 65 ft/lbs.

Let me know how you make out.
Michael