The Idle Speed Adjustment Screw is a genuine Stihl OEM part for setting and stabilising idle on selected Stihl machines, including the TS350 cut-off saw and 090 chainsaw. Made from durable metal and supplied with a coil spring that maintains tension, this precision screw lets you fine‐tune idle speed so the engine runs smoothly without stalling or driving the clutch. It is designed for a correct fit in compatible Stihl carburettors and throttle bodies, helping restore reliable tickover after routine servicing or repairs. As a Genuine Part, it matches original specifications for thread, length and seating, providing consistent adjustment feel and long service life in demanding trade and site conditions.

Key Features:
– Genuine Stihl OEM spare for assured compatibility and quality
– Durable metal construction with spring tension to hold the setting
– Precise idle speed adjustment to improve stability and prevent stalling
– Helps achieve smooth tickover and easier starting after tune-ups
– Consistent thread and profile for correct fit in listed Stihl models
– Simple to install and adjust with standard hand tools
– Suitable for cut-off saws, chainsaws and drills in the compatible range
– Reliable performance under vibration and regular use

Typical Applications:
Used to set and secure idle speed after carburettor cleaning, diaphragm replacement, air filter changes, or when engines idle too high or low. Ideal for restoring smooth running on site saws and large pro chainsaws, and for routine maintenance checks to keep machines safe, responsive and ready for work.

Also known as:
Idle screw, idle speed screw, carb screw, carburettor adjustment screw, throttle stop screw, tickover screw, tickover adjuster.

Fits Models:
070, 08 S, 08S, 090, 090 G, 090G, BT 360, BT360, TS 350, TS 350 AVE, TS 360, TS350, TS350AVE, TS360

Alternate Part Numbers:
4201-122-6200, 42011226200

Product Specifications