DESCRIPTION: The stihl ms250 chainsaw can be tricky to start if you do not follow the advised routine - there is no fuel bubble and over priming/flooding can lock it up causing some hard hydraulic lock to pull through. The way to start from cold is 2 pulls full choke , 1 at half then start on I setting (run setting). Hope this helps you. This is not the quick start version. The wood in vid was cut previous day.