With the wood 16X8 I had on originally the new needle settings are 1 5/8 L and 2 1/8 H, Still acts lean when at a idle to WOT, idle is on the high end. Idle will load up after about 15+ sec which sounds like it could be a tad rich. Tried to lean out the top end a bit, but then goes into a lean rpm fade about 2 turns out in 8-10sec, so it'll stay at 2 1/8 H.
Overall, adjusting the lever to just barley above flush did something for the Low end not requiring as much fuel through the needle, but still over 1.5 turns out. after more extensive research I found a RCGF thread where multiple people have run into this issue on 15-26cc RCGF engines with a fake walbro. The fix was fine tuning the fork/lever. One individual had to mess with it about 4 times and it will transition, and run like it should. I noticed that the fork attaching the needle (other side of the lever) has a fair amount of play in it. I am going to take it apart again and adjust the fork so there is very little play in it.
The lever height for my specific carb (different than my DLE35RA!) is set so that with a strait edge set on the bosses next to the lever, the strait edge should just touch the lever without lifting the needle:
This is from the link I had posted earlier:
"Setting of the metering lever height for a diaphragm carburetor is one most important adjustment to be made in a diaphragm carburetor. The metering lever’s functionality starts with the atmospheric pressure entering from the vent hole in the metering cover. This atmospheric pressure forces the metering diaphragm assembly down while the low pressure (vacuum) under the metering diaphragm helps to draw it down onto the lever. The lever is depressed, over rides the metering spring and lifts the inlet needle off the inlet seat to allow the fuel mix to enter into the metering chamber of the carburetor. The correct metering lever setting is critical.
A lever set too high can cause the metering diaphragm assembly to contact the lever too early and create a rich condition. If the lever is set too low, a lean condition can occur due to the length of travel the metering diaphragm assembly has to make to contact the lever. Our C-1022 Service Manual shows you and walks you through the proper procedure for setting the metering lever height by using the Walbro 500-13 metering lever gauge."
For now: meter lever is set where it should be now, and it improved my transition, but with the HSN set so rich and the motor acting like it's starving when attempting to lean it out to what should be a mfgr setting of 1.5 out (which should be on the rich side!)- I am led to believe that the fork adjustment should allow the extra needed fuel into the metering chamber so when moving to WOT the carb will give a bolus of fuel thus acting like an accelerator pump found on larger carbs to mix in with the extra air being sucked up by this little beast. There is also the possibility that the lever spring is too strong so it would take more differential pressure for the diaphragm to overcome the spring tension for demand of fuel through the carb vacuum as well. Im feeling more confident that I'm getting this thing figured out, maybe tomorrow I'll have the results I am looking for fingers crossed. Class is over for know ha ha (teacher=interwebs)
