Stihl Chainsaw - starts but won't run
My trusty (10 yr) old Stihl 16" chainsaw is starting fine (have to choke once until it kicks - which has always been the way) but it will only run for 20 or 30 seconds and then dies.
Re-chocking (once until it kicks) gets it running again for another 20-30 seconds. This pattern continues to repeat itself even after the saw is well warmed up.
Has to be a 'gas' problem - I'm thinking bad/dirty gas, or maybe more likely a carburetor problem (eg fuel pump?).
I'll get deeper into the diagnosis this weekend, but thought in the meantime I'd ask for any advice and ideas...