MTD Snowblower Worm Shaft 917-05112A

Basic information

• Part name: Snowblower worm shaft
• Manufacturer: MTD
• Category: Snowblower drivetrain and gearbox components
• Primary function: Transfers rotational motion through the gearbox to engage other gears and change direction or speed of rotation

Installation & compatibility

• Compatible models: Fits select MTD and Craftsman snowblowers; confirm compatibility using your models parts diagrams
• Installation difficulty: Medium; requires accessing the gearbox and positioning the shaft with proper alignment
• Tools required: Wrench set, socket set, pliers

Additional information

This snowblower worm shaft, part number 917-05112A, is a key component in the gearbox that transfers rotational motion into other gears, often interacting with a worm gear to change the direction or speed of rotation. It helps maintain the correct motion through the drivetrain or chute rotation system.

If the worm shaft becomes worn, bent, or damaged, the gears it engages may not mesh smoothly. You might notice rough operation, noise, resistance, or inconsistent drive response if the worm shaft does not rotate freely and maintain proper alignment.

Disconnect the spark plug wire before starting the repair to prevent accidental startup. Gearbox and shaft areas can have sharp edges, so wearing work gloves can help protect your hands during installation. Make sure the worm shaft is aligned correctly and seated fully in its mounts before using the snowblower.