Mitch has another great thread going on chainsaw repair group facebook
Wont say which tech but alot of them on the CRG = INFO ADDED! After a conversation with a tech, I've been informed three sensors exist. One being a crank case barometric sensor and two temp sensors. This is how the ecu sorts out fueling map. If you made it through the 38 minutes, God bless you and thanks for watching!
https://youtu.be/uzRUU9UO1rw