linnix13
Member
I am holding that exact carburetor in my hand right now.
The screw by the fuel hose barbs is the high speed screw. Turn it out to add fuel, in to reduce fuel.
Looking down at the black plastic cable cam there is a brass screw with slots on either side of it. Do NOTtry to turn the big brass screw. It is hollow in the center with a super glue filler in it.
Pick put the glue as best you can, or, I burrned it out with a small "pencil" torch. It lights up really fast and "poof" it is all gone. It burned so fast the large brass screw never had a chance to get hot enough to melt the plastic any.
Be carefull to only apply the flame to the center of the brass. Do not get it near the plactic.
After you remove the glue plug you will need a jeweler's screwdriver to turn the tiny screw down in there.
Out to add fuel to the idle circuit.
In to reduce the fuel.
There really is no midrange adjustments on these carburetors.
ok but it idles great and is fine in the lows, its the transition between low and high that it boggs, and i can fix the bogging by running it on 3/4ths choke, so i asumed it was runing lean, so i turned the high speed screw out about half a turn and voila runs great in the lows(very very powerfull more than it has ever been!) and it transitions just fine, but in the highs it sounds like a lawn trimmer(which the engine is) and then just stays at that speed, which is like 25-30kph and for a 33cc engine pulling a 230lb me seems fair, im not sure the engine is designed to scream, it will scream if it was lean but wont all 2 strokes do that before they blow up? its this engine here,
http://azmotoparts.com/uploads/2008_6_2575446.jpg