hi guys. I have a question about Stihl 4mix engines. How does stihl change the Max rpm
for 4mix engines. for example i found a br500/550/600 service manual and it show the
engine specs. and the br500 maxes out at 5700rpm and the 500 is 6100 and the 600 is
7200. Is i done by carburation , timing, or cam . Any help is Appreciated
for 4mix engines. for example i found a br500/550/600 service manual and it show the
engine specs. and the br500 maxes out at 5700rpm and the 500 is 6100 and the 600 is
7200. Is i done by carburation , timing, or cam . Any help is Appreciated