A lot of the smaller Stihl's use a Walbro or Zama carb with no choke built in. Stihl puts a little plastic flap in the air filter that serves as a choke. Some of these don't function very well, sorta like half choke. I have 2 026 stihl, great little saws but the no choke feature is a bummer.
This combined with the master control lever is a two pronged failure. We dealers were cautioned not to criticise this lever as it was designed by Andreas Stihl himself. The Tillotson HU carb was the best carb ever, bar none.
