Im gonna be done rebuildin in about 1 week. The shee is gonna get 2 tanks, fresh oil, new spark plugs, and then shes gonna get beat to shit! Im gonna go real easy first tank, then work my way up on the second tank. Probably gonna let her idle for the first 5-10 min, then cool, the put put around for 10, then cool... repeat. 20 hours is rediculas
CLEAN THE AIRFILTER AND CHANGE THE OIL FREQUENTLY during breakin. There is gonna be some metal crap in the crank case from the motor being built. All that must be cleaned out.
Good luck