I don't know,BUT to check the spark on ANY engine take the plug out,plug it into the suppressor cap lay the threaded end on the engine or any earthed part of the body and pull the cord,kick start,turn key,whatever and see that you have a spark between the gap,not shooting around all over the plug,you want a nice fat blue spark in the gap,you have to get this right first or it's no go and your wasting your time,do it in the shade out of sunlight and get someone to pull the cord while you watch the plug,if no spark NO GO,don't look for fuel mix or anything else till you have a good spark.
Rich
May 2008