Steve I hope you do NOT follow the run in instructions that came with the engine.... The Norvels are notoriously tight when new and non engine folks were sending too many back cuz they could not get them started--- so new Norvel company re-wrote the instructions, not telling the customer that the method reduced the life of the engine significantly.
From new, never slow turn the engine over...all oil is squeezed out and Piston seizes at TDC...If you must play with it, flip it over briskly
Small prop, (I use a cox 5x3 rubber ducky trimmed to 4.5") 25%~35% nitro 20%~22% oil (50/50 oil blend is fine), put extra shims under head or better yet throw on an old low compression Cox head.
Heat gun the top of CY head until hot to touch, prime and fire the baby on the prime only...Play with the prime so you figure out what works best before hooking up the tank. I don't put any fuel in the exhaust port, just two to three drops down the venturi and back turn the prop...you may prefer exhaust, or venturi, or combination; find what you like that gives a consistent light off when you start it....when new there is too much pinch to back flip start, later when broke in some, I find back flip to be more reliable for first flip starting
Heat, prime, and run rich only a few seconds, then screaming fast for a minuet, shut off let cool, repeat a few times.
Put stock head back on or reduce shims and use heat gun and fire it up and run screaming fast a few times and she will be ready for flying.... I generally do 10 heat cycles before mounting on the plane
I guarantee a electric starter will bend the rod when new because of the very tight top pinch...and if you do use a starter later, make darned sure she is not flooded!!!!
NOTE the QC of NORVEL in the past has been real good to real bad...Many of these (I have about 10 of the .049 and .061s ) have too tight a crankshaft to Crank case clearance and when they heat up start to seize the crank ..... if yous is tight, polish the front of the crank shaft
I do this to each new NV I buy.... I generally open up all new engines in last 15 years cuz I find too much swarf even in so called name brand high dollar engines