well the needles are actually two little plastic heads with a flathead groove cut in them, so i have no idea how to remove the limiter. i just need something that will start the engine, i cannot get the darn thing started, i had it in a vise in my father''s shop, but now it is on the airplane, in the vise i got it started with an air impact gun but i am afraid that using that now that the engine is mounted up would destroy the mount. if i could just get something that would spin it fast enough i could probably get it to run and then i could adjust it so it would keep running. in the vise it would run for about 15 seconds and then sputter and die it never gave me enough time to adjust anything.. i only got it to run about 3 or 4 times and i fooled with it for about 2 hours! plus i destroyed the rubber cone that goes in the starter!