The Genie 27091A.S Limit Worm Gear is a genuine OEM replacement part designed to restore precise travel control on compatible Genie garage door openers. This worm gear interfaces with the opener’s limit mechanism to drive the limit cams or switches, ensuring the door reliably stops at the programmed open and close positions. Replacing a worn or stripped limit worm gear helps correct symptoms such as overtravel, inconsistent stopping points, or the need for frequent readjustment of limits, making it a common repair part for residential garage door opener maintenance.
Installation typically involves disconnecting power, removing the opener cover, accessing the limit assembly, and swapping the worn gear for the 27091A.S part, followed by re-setting and testing the travel limits per the opener’s manual. For model compatibility, confirm the part number against your opener’s parts diagram or the Genie Company support resources, as fitment varies by model family. After installation, verify safe operation, adjust force and travel limits as instructed by Genie, and test the door balance and safety reversal system. This OEM Genie replacement is ideal for technicians and DIY users seeking a precise, durable fix for limit control issues on select Genie garage door openers.