Like a four-stroke engine, the Stihl 4 MIX line of products requires routine valve adjustments. Having proper valve adjustment helps the engine to run at its maximum capacity. A few signs that you may need to adjust your valves are loss in compression, trouble starting, loss in power, or degradation in fuel efficiency.
The process of adjusting valves can seem intimidating or too complicated for a first-timer. For this reason, many people tend to shy away from them. however, it is a straightforward process. With a little bit of patience and the right tools, you can adjust your engine’s valves.
Tools needed are; Torx T-Wrench or T27 driver, 5/8 spark plug socket (not necessary if you have a STIHL t-wrench), Valve Clearance Feeler Gauge (part number 4282 007 1001), and 8mm socket.
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