Husqvarna String Trimmer Throttle Trigger OEM #574192501

Restore smooth, responsive engine control to your Husqvarna string trimmer with the genuine OEM Throttle Trigger (Part #574192501). This throttle trigger is for line trimmers and allows you to control engine speed — it is the primary operator input that governs cutting power from idle to full throttle during every trimming pass. A worn, cracked, or broken throttle trigger can reduce operator control and safety. Replacing it with this OEM part ensures smooth throttle function and like-new handling.

The trigger goes next to the spring and the throttle lockout. It is a genuine item supplied by the original equipment manufacturer for use with Husqvarna trimmers and edgers. This part is available individually and is made of plastic.

Compatible Models: Husqvarna 122C Trimmer/Edger, 122LDx Trimmer/Edger, 122 LD Trimmer, and 122 LK (967252801) Trimmer.

Also Found In the Throttle Controls Assembly Alongside: Throttle Lockout #574192401, Handle Assembly #574193001, Short Circuit Cable #574488803, Throttle Assembly #574489001, and Spring #576851701 — inspect and replace companion components as needed during repair.

Key Features:

• Genuine OEM Part – Genuine Husqvarna Throttle Trigger — a direct OEM replacement for reliable throttle control, manufactured to exact factory specifications
• Engine Speed Control – Allows you to control engine speed with precision from idle to full throttle, ensuring consistent cutting power and trimming accuracy
• Restores smooth and responsive trigger operation — eliminates sticking, sluggish response, or loss of throttle control caused by a worn or broken original
• Durable plastic construction for long-term use — designed to withstand the grip pressure, vibration, and outdoor exposure of regular trimming use
• Works with Throttle Lockout – Installs next to the spring and throttle lockout safety interlock, restoring the full two-step throttle activation safety system
• Sold individually; may require a screwdriver and a set of pliers to install correctly
• Weight: 0.06 lbs

Most Common Reason to Replace: It will require replacing if it becomes broken. Additional symptoms include a trigger that sticks in the depressed position, fails to spring back to idle, cracks under hand pressure, or has a broken tab that prevents proper engagement with the throttle lockout safety interlock. A faulty throttle trigger is not just an inconvenience — it is a safety issue, as it may prevent the operator from properly controlling cutting speed or returning the engine to idle.

Why Genuine OEM? The throttle trigger on the Husqvarna 122 series trimmers is a precision-molded component with specific pivot geometry, spring engagement points, and lockout interaction features. Aftermarket substitutes may fit loosely, bind against the lockout, or fail to return the throttle to idle reliably — creating unsafe operating conditions. This genuine Husqvarna part is molded to the exact specifications of the original, restoring the crisp, safe throttle action your trimmer was designed to deliver.

Part Details:

• OEM Part Number: 574192501
• Part Type: Throttle Trigger / Trigger / Engine Speed Control Trigger
• Material: Plastic
• Weight: 0.06 lbs
• Equipment Type: String Trimmer / Edger
• Fits: Husqvarna 122C, 122LD, 122LDx, 122LK (967252801)
• Brand: Husqvarna (Genuine OEM)