O.S. 61 factory needle settings

[always_rc]

Does anyone know the factory needle setting for this engine. I just got a used heli with this engine, and need to start from the beginning as it doesn't seem to like where it's at now. Engine does have good compression and it did fire, just need the needle settings. thanks

[chris696]

main needle 2 and 1/4 turns out to start then lean in from there. if you have the 3 needle carb ie (2 large adjusters) then the top one i would leave closed unless ya want to tweak the mid range which i dont bother with and the main one is the one at the bottom or where the fuel pipe connects under it. the factory setting for the idle mixture is dead centre or as you look at the carb the slot should be running parallel to the carb hope this helps

[always_rc]

That is exactly what I was looking for, thank you. :thumbup: