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Will changing octane (89-91) or ethanol to non ethanol sometimes require tuning? I’ve ran all types of fuel without noticing any performance difference but I’m not a master. Only difference I’ve noticed is fumes are more harsh from pump gas vs the premix. I want to open up the mufflers a bit on...

Great to know! Just got a tach yesterday and will be tuning all my saws. All of them have been at factory settings since purchasing. Some are 1.5 yrs old. Curious to see how close they are to factory rpm’s. How often should they be tuned?

So warm up the saw before adjusting carb to factory rpm’s ?

Thanks fellas! Just adjusted my climbing saw idle. Hopefully it’ll be 1 - 2 pull start again. I’ve read and watched many videos on tuning but only fooled with idle speed so far. A tach is going to be ordered in the near future so I can adjust high and low jets. I can’t hear pitch well enough to...

Can the idle adjustment have an impact on starting? Also, is the best idle position just below the point where the chain doesn’t move or just above where the saw stalls?