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I have a 2004 CRF 50 F 100% bone stock from factory

Only mod is the spring and rim locks

My question is on my carb for my 2004 CRF50F the manufacturer recommends 1-1/2 turns out on the air screw......

For the last three years I've been running like An 1/8 Turn out on the air screw

everything is been running fine no smoke starts on first kick starts with no choke on in the winter.

I never have to kick hard I can push down with my hand slowly it starts right up...

Should I just go by the motto "if it ain't broke don't fix it"

or should I try the 1-1/2 out????

I'm also 6'2" 275 pounds pulls me just fine no hesitation no bogging. Nothing it runs 100%

Please let me know what you suggest...

Edited by ChrisLow

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It's an adjustable 'fuel' screw, not air screw.

You use it to adjust your pilot jet circuit

it is for idle only

Turn it for maximum idle and you are done

False on this one I have (2) I have a "Throttle Stop Screw" Which Is My Idle

And A "Air Screw" Which Is Air/Fuel

Air fuel screw is a flathead

Idle is a Phillips

ImageUploadedByThumper Talk1398310037.854583.jpg

Edited by ChrisLow

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Two strokes have air screws

Four strokes have fuel screw or an air screw

Yours does have an air screw (?)

Both have idle screws.

I mean I guess it could be called something different but the shop service manual is calling it an air screw. It's a 10 year old bike and manual Maybe they have changed the carb since then and call it something different now

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