v8titan said:As I mentioned in a previous post, I open up the muffler output on my 034 from 0.625" to around 0.750". Today I had a chance to go out and give the saw a try. First thing I noticed was that the saw bogged when I throttled, the solution was to open (richen) the low speed adjuster slightly. After I got the saw accelerating nicely, I opened the high speed adjustment just a touch. (I read in previous posts that you need to run a little richer after opening the muffler up). I proceeded to make a few cuts in a large piece of poplar and the saw was really preforming nicely. After the saw was warmed up, I used my hand held tachometer to check the no load RPM's. The saw was running lean so I adjusted the high speed screw to max out at 13,000 as indicated in the saw manual. After doing this I tried to make a few more cuts and the saw did not like the setting and bogged in the cut. That leads me to my question. Can I readjust the carb forgetting about the no load speed and adjust for max performance? If I do this will I be risking running the saw too lean? I would appreciate some feedback here. I did search the forum on carb adjustments and read up a bit but I figured someone might be able to elaborate here.
Tom
Lakeside53 said:No, you can't ignore the WOT setting, and it's a max... don't exceed it unless you're a racer and only care about 30 seconds of cutting... You can of course set it lower. Try the "turn H screw in to a clean sound and then back to a burble... Then check with a tach.
Did the saw do this before your muffler mod?
If you have a standard muffler front around, put it back on and test the saw again - there is a chance you've opened the muffler up too much. Also, just for interest, what is the saws compression?
davefr said:Generally with a muffler mod you richen up H vs. lean it.
And if you stall out in the cut you're too lean.
How many turns out is the H and L currently set at?
I'd start from the factory settings of 1 turn out and do it all over again.
I believe my modded 034 is at about 1-1/8 out on the H and about 7/8 out on the L.
Enter your email address to join: