Boogerhook
ArboristSite Lurker
Got bored today, so I pulled the muffler off my MS211 and punched a few holes in it and also shaved the tab off of the H limiter. Using a tachometer and my un-finely tuned ear, I let it get warmed up and then started adjusting the carb.
Before any adjustment it was idling at about 3500 rpm, so I backed out the LA screw until it was bouncing around 2800 rpm. After running the L screw in and out a bit I decided that its original position was correct, and went on to adjust the high side.
At WOT, it topped out at about 13500 rpm and I started running the H screw in, expecting to hear the engine lean out and RPM to increase. Speed remained fairly constant and I couldn't hear any difference so I took the screw back to its original position and started backing it out. RPM did start to fall off a bit, but I didn't hear it begin to burble like the 029. I ran it back in to the original position, at 13500 rpm and called it good.
My question is should I expect the 211 carb to react differently to tuning than the 029 carb? The 211 acted like it had a limiter which prevented going over 13500 rpm, but would that also keep it from responding to a lean or rich condition at WOT like the 029 would?
Before any adjustment it was idling at about 3500 rpm, so I backed out the LA screw until it was bouncing around 2800 rpm. After running the L screw in and out a bit I decided that its original position was correct, and went on to adjust the high side.
At WOT, it topped out at about 13500 rpm and I started running the H screw in, expecting to hear the engine lean out and RPM to increase. Speed remained fairly constant and I couldn't hear any difference so I took the screw back to its original position and started backing it out. RPM did start to fall off a bit, but I didn't hear it begin to burble like the 029. I ran it back in to the original position, at 13500 rpm and called it good.
My question is should I expect the 211 carb to react differently to tuning than the 029 carb? The 211 acted like it had a limiter which prevented going over 13500 rpm, but would that also keep it from responding to a lean or rich condition at WOT like the 029 would?