Air Screw on 85 250sx

[mayhem17]

Just took carb apart to rebuild. When I checked the turns on the screw, it was only 3/4 turn out. I've only really worked on newer 4 stroke stuff, and wanted to make sure that this was correct. Looked at the service manual, and it only states that you turn it in 1/2 turn for elevation, but doesn't state what the factory setting is. Thanks.

[MattDragontamer]

I may be wrong, but I think it's 1-1/4 turn out to 1-1/2. Adjust from there.

[mayhem17]

I didn't think that 3/4 was enough, but most I've messed with are at least 2 turns. I found another thread last night that mentioned he had it 2 1/4 out.

[Flyingw]

2 turns out for 85 SX

[mayhem17]

2 turns out for 85 SX

Much appreciated. After not being run in over 10 years. Rebuild the carb, tossed a new plug in her, checked the oil. Started up first kick. Thanks for the help.

[RIDE-RED 250r]

If I am remembering correctly, that is actually a fuel regulating screw on the SX. It's between the slide and the engine, correct?

[Flyingw]

That is correct Red.

[RIDE-RED 250r]

So that being said, turning it in will reduce fuel, leaning the idle mixture and turning it out will increase fuel, enriching idle mixture