Adjusting Carburetor

[brad068]

I found that a good starting point is to set both high and low screws at 1 turn out. aka. remove plastic caps (red and white usually), turn screws clockwise until they lightly "seat" then back out (counterclockwise) 1 turn. This is usually a good starting point. Also I like to leave them alittle rich for the fact a saw runs different once under load and temp is usually colder outside.

A saw with alot of use or lower compression will usually need @1.5-2 turn out on the low speed due to the fact the engine can't develop the low pressure or "sucking" force through the carb at low speed as well as a fresh/new saw.

 

[smokinj]

yes, it will get you very close but still good to be able to hear the slight 4 stroke.

Is this shen the engine sounds kind of rough but still runs really well?

yes once it sounds perfect then back off a little its called 4 stoking.

To me, the term "back off" sounds like the wrong direction. You need to go in the other direction and open (richen) it up a little.

you really need to learn to tune by sound and you will know what back off meens. If tuning with tack or by turns of the screw your right.