Their discussing the potential for additional oil replacing the fuel as a cooling agent when it vaporizes , thus leaning the engine out . Theoretically possible however remote with today's syn oils ability to protect metal surfaces . You may have a slightly hotter running engine worst case scenario !You do realize the lower you go in ratio the oil is thicker if you have a 50 to 1 it’s leaner. Higher more gas less oil ,lower More oil less gas. As for me I always like leaving mine little in the “rough”Little bit more oil As opposed to gas when I’m adjusting the carburetor
Nice saw , fixed jet carb . Buy a new Zama or Walbro online under $20 then tune your saw properly Bud !This is my 300S I want to get running. No carb adjustments on it other than the Idle screw.View attachment 829590View attachment 829591View attachment 829592View attachment 829593
Have a look at the black plastic throttle plate where it pivots there is a translucent plastic plug in the top, if you pry that out I would bet there is an adjustment screw hidden down there. That should be the low speed screw. If you post some more pics of the carb I may be able to show you where there are other adjustments. Lots of carbs appear to be fixed jet but the screws are hidden.
I have not encountered any plastic welch plugs , however that would be proactive on the manufacturers part ..Cheers !
Somebody’s hijacking this threadI wonder if the appeal is that something like a trimmer spends more time at part-throttle under load, instead of idle/WOT like a saw. Maybe the rotary cylindrical throttle gives better mixture control at part-throttle settings without the manufacturing complexity of a motorcycle-type slide carb (Mikuni, Keihin).
Somebody’s hijacking this thread
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