- Fitment: For FS75 FS80 FS83 FS85 FS90 FS90R FS100 FS110 FS120 FS130 FS130R FS200 FS250 HT70 HT75 FC75 FC85 FR85 FR350 FR450 FR480 trimmers. Replaces 4137 182 1001 - Accurate throttle response: This lawn mower throttle trigger ensures smooth and steady control of engine speed, giving you better accuracy during trimming or heavy cutting. It improves overall cutting precision and enhances the handling of your garden power tool - Reliable long-term function: Built for consistency, this garden trimmer trigger lever keeps your throttle response stable over time. It avoids slipping or stiffness, helping you maintain performance even after repeated use during tough or extended trimming work - Quick and effective setup: With a design focused on ease, this replacement throttle switch can be installed quickly to restore control without added downtime. Get your equipment back in action fast, with a trigger that responds precisely to every press - Practical applications: 1) Trimming along fence lines, driveways, and edges where steady throttle helps achieve a clean, even cut 2) Clearing dense grass or brush without stalling by keeping engine speed consistent 3) During routine maintenance or replacement in a workshop to restore original throttle responsiveness