Chainsaw Repair

if the saw was pushed on real hard or was real dull it will get very hot even if its set real rich cause as it heats up it becomes not so rich any more , When I'm blocking 4 foot stuff or bigger I set my saw very rich and yes in the first block its rich but by the second block U/m very close to being right on the money but I can still lean burn the motor if I keep pushing hard on it and that even can happen on a big saw , heat in the motor controls how much fuel the saw needs to keep running