O26 stihl issues

[JWD]

I have a 026 a stihl chainsaw was cutting today and was running fine and then when i went to full throttle it sputters let off and it idles fine
Anyone have any suggestions of what is wrong

 

[JMCK]

I have a 026 a stihl chainsaw was cutting today and was running fine and then when i went to full throttle it sputters let off and it idles fine
Anyone have any suggestions of what is wrong

Gotta start with the basics. When was the last time the carb was cleaned, fuel filter last changed ? Etc. doesn’t take much to jam the tiny orfices up in the carb.

 

[Trever]

Clean the spark screen real good and check the air filter. Then check the fuel tank vent after that check the fuel filter.

 

[Backyard Lumberjack]

I have a 026 a stihl chainsaw was cutting today and was running fine and then when i went to full throttle it sputters let off and it idles fine
Anyone have any suggestions of what is wrong

that is pretty much what my bot NIB 026 did... so i rebuilt the carb and ran again like new!

prob needs or could use fresh fuel pump diaphragm... etc