Walbro: thicker diaphragm, less position-sensitive, K-series rebuild kits (12-18€). Zama: thinner diaphragm, prefers horizontal, RB-series rebuild kits (10-15€).
Both: H/L screws + idle T. L screw setting differs by ~0.25 turn.
Stihl M-Tronic eliminates manual tuning entirely.
Ask the AI mechanic — share your machine, the AI returns carburetor reference, rebuild kit, and OEM settings.
Your brush cutter starts but dies when you release the throttle? The idle circuit, air filter and air leaks are the real suspects. Methodical diagnosis before adjusting the carb.
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A dull chain means an engine working too hard and dangerous work. Angle, depth, guide bar, filter — complete chainsaw maintenance.
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Trapped water freezes and cracks the pump. How to store it safely.
ReadThe topics our mechanics consult most
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