New engine
 

Some food for thought ...Dolmar has a new series of chainsaws, PS 6400,7300, and 7900...64cc, 73cc, and 79cc. The 79 is rated at 6.2 BHP, real HP, not somebody's ad hype....No load rpm is 13,500..Puts to rest any doubts about over revving with a prop...Anybody wants to send one to convert, I'll do the first one for $125.00, ignition in the mount, mechanical spark advance, 3/8-24 single bolt prop hub....Any Takers ?
I got info from Dolmar Products, 1 888 673 7278