Carburetor Tuning 101: Adjusting High & Low Speed Screws đź”§
So, you’ve cleaned your air filter, installed fresh fuel, and put in a new spark plug—but your engine still runs rough. If it struggles to accelerate or idles poorly, you might need to adjust the carburetor mixture screws.
This guide is for small engines that feature adjustable fuel/air mixture screws (often found on two-stroke equipment like chainsaws, trimmers, and some older lawnmowers). Caution: Improper tuning can quickly lead to engine damage. Always prioritize your engine’s health over maximum power.
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