Hi All,

Here's how I'm tuning my saito .72. I am staying below 10,000 RPM with a 13x6, during break-in flights. I've flown about 9 times now.

I've read threads about sloppy rich, too lean black residue. Truth is I am having great difficulty figuring out where I should have the setting. Right now it's below 10,000, about 9600. It loads up so I can't stay at low idle for too long. Fly's good at 1/2 to 3/4 throttle but I see no improvement when I go full throttle. Even seems to bog down.

I read where during break-in you may have to adjust low end leaner after every couple flights. I'm going to give it a 1/4 turn this weekend.

However what I'm looking for is a beginners guide to tuning a 4 stroke.

Notes:

Can I nose up the plane at full throttle to see if there is a pitch difference OR pinch the fuel line to see if too lean?

My tach reading is not consistent, it jumps around, how can I tune to max less 400 when it jumps around a 1,000 different.

All help is appreciated.

RD