STIHL FS 45 Manuel utilisateur

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STIHL FS 45 Manuel utilisateur | Fixfr
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User questions

F V

John F.

How can one address the issue of the engine racing or the cutting tool spinning at idle on a Stihl FS 45, specifically concerning carburetor adjustments?

The ignition system of the STIHL FS 45 is electronically controlled, and ignition advance is not user-adjustable. If the engine tends to race at idle or the cutting tool spins on its own, it is likely an idle speed adjustment needed on the carburetor: adjust the LA screw (idle stop screw) by turning it counter-clockwise until the tool stops, then continue turning another 1/2 to 1 full turn in the same direction. If the engine speed is irregular, an adjustment of the L screw (idle mixture) may be necessary (in 1/4 turn increments), but access is limited by factory stops.

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