The kill switch is the round push button to the left of the trigger lock.
Good guess but it's not a 285. The cylinder shroud and air cover is a one piece cover. I'm thinking a 480 or something similar, I just don't know those series that well...
What do you think @SawTroll?
My guess is a 185CD ....
It's close to this one. Mine may be older, no OPL, muffler outlet in the bottom. Mine has a Tillotson HS89A carburetor that is not listed in Acres. I'd really like a peak under the top cover of the OP's friend's saw.
This one has a Mahle jug marked 52ZN1++. 52mm jug.
.....
Some of the boyz think it's a 180 jug on a 260 case..... I'm gonna have to take it apart troll...