• 344 Answers SOURCE: With these big boys, stihl has a decompression valve on the side of the manifold so it's easier to pull start. What you wanna do is spray some gum out into the plug hole then reinstall the plug, squirts some in the carb as well.
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If your unit starts up and runs for a few seconds and cuts out, your carburetor is done. Basically it's like this, you can adjust the carburetor by the two needles on the carb. The H and the L. The low you adjust at flat idle and the high you adjust by keeping the throttle ppen Posted on Oct 07, 2015.