The engine is a lot like the current Magnum 91 engine.

The High Speed needle is 2 1/2 turns out from all the way in. Screw the needle all the way in and back it out 2 1/2 turns.

The Low Speed needle is 4 1/2 turns in from all the way out. Screw the needle all the way until it stops and then screw in 4 1/2 turns

There are two different top dead centers of the piston as far as the valves go because the cam only run half the speed of the crankshaft. You want the one that is the compression stroke.

Here is a link to the Magnum 80 owner's manual. You can download it to your computer and print it out or read it whenever you want to.

http://media.hobbypeople.net/manual/210970.pdf

Here's a company in the USA where the engine origionally came from that still sells parts for the engine though they no longer sell the engine itself. This is a link to just the ASP 80 parts....

http://www.horizonhobby.com/Search/D...hType=Standard

Here's a company's ASP catalog page in England that still sells the 80 and they will sell in the US.....

http://www.justengines.unseen.org/ASP.htm

Enjoy,

Jim