os max 40fp
 

I just purchased a os max 40fp but I do not have a manuel to adjust it with does any one have any suggestions

os max 40fp
 

2.5 turns to start and go from there......it should start rich...
If you need to adjust the idle.....I start at 1.5 turns and go from there...
This works for 90% or more of the engines in use today.....

I have had several FP engines since I started flying....this works for me...... Just my $.01675 worth.........

os max 40fp
 

We normally suggest opening the high-speed needle valve about 2-1/2 turns out from closed. This gives you a very rich mixture to start with.

The air-bleed screw should be set so that it blocks 1/2 of the air-bleed hole. We do this visually, by looking into the air-bleed hole.

The idle is leaned by backing out the air-bleed screw, and richened by turning it in.

os max 40fp
 

thanks witch one is air and fuel