9ninjas
ArboristSite Lurker
Just got a tach today (tech data) because I wanted to check the max rpm on my 460. First warmed up the saw and checked the max rpm with the b&c attached - read about 14300. Next pulled b&c and checked and it read about 15200. According to Madsens site w/o b&c the 460 should read about 13500. The hi speed adjusting screw still has the cap on it and is screwed all the way out (3/4 turn). I live at about 5400 ft. so would figure it would be running rich anyway, so I was shocked when I got the readings. I tried it a couple of different times with the b&c off and got about the same readings. It seems to cut well but I sure as heck don't won't to risk burning it up because it is too lean. Should I remove the cap on the screw and riching it up even more to lower the rpm????