The carburetor on my Mac 3214 chainsaw will not stay as it seems the jet sc?

I Have a pro mac 610 w/elec.ign. has spark wont start?

where can i get a chainbrake spring?

mac 280 b?

McCullough 338?

McCulluch mac 3200 chainsaw?

saw wont keep runing?

Mac 3516 fuel screen in carb?

need adjusting screw?

service depot?

Spark Plug?

carb settings 4 a mcculloch mac 436 chainsaw ?

looking for sem 809 201 51 type am 32 ?