Echo CS 400 Carb Difference

[revo39564]

Wondering if anyone knows what the difference is between the walbro at 820 and the 985 carbs? Look similar 820 has a friction plug for the idle screw don’t really see any other differences….. carb rebuild
Kit, jets, etc all look identical

 

[revo39564]

Echo company had no clue….. I asked them if they knew the difference between the carbs and they said I don’t know we didn’t build the carbs lol …The walbro tech said it should probably work. Installed it today works great.