Excellent advice from an experienced MB'er!

I will add:

1) The factory bullet connectors between the engine and CDI are really crappy...make sure that they are tight by crimping the female end lightly with a needle nose plier.

2) When these engines are new you really need to get peddaling at a good clip before releasing the clutch.

I have had several customers at the shop that would release the clutch too early, and the engine would pop over a few turns before the rider came to a stop.

Pedal it up vigorously...release the clutch...and keep peddaling so that the engine continues to turn over.

Crack the throttle as you are peddaling, then return to idle, crack it open again...listen for the engine to sound like it wants to start...then crack the throttle back to that point that made the engine pop pop.

Once it is running, (and you no longer need to pedal), go easy on the throttle...You don't want to push it early on.

Jim