MTD Snowblower Helical Gear 917-04973A

Basic information

• Part name: Snowblower helical gear
• Manufacturer: MTD
• Category: Snowblower drivetrain and gearbox components
• Primary function: Transfers rotational motion between gears in the snowblowers drive or chute rotation system

Technical specifications

• Number of teeth: 23

Installation & compatibility

• Compatible models: Fits select MTD and Craftsman snowblowers; confirm compatibility using your models parts diagrams
• Installation difficulty: Medium; requires accessing the appropriate gear assembly and positioning the gear on its shaft or mount
• Tools required: Wrench set, socket set, pliers

Additional information

This snowblower helical gear, part number 917-04973A, transfers rotational force through the drive or chute rotation mechanism by meshing with other gears at an angle. Helical gears use angled teeth to provide smoother, quieter operation compared with straight-cut gears, and help maintain consistent motion within the gear train.

If the helical gears teeth wear, chip, or become damaged, the gear mesh may feel rough or inconsistent, which can lead to noise, vibration, or reduced responsiveness in the associated system. You might notice difficulty engaging the drive or chute rotation, or unusual sounds from the gear area if the gear is compromised.

Disconnect the spark plug wire before starting the repair to prevent accidental startup. Gear and related components can have sharp edges, so wearing work gloves can help protect your hands during installation. Make sure the gear is fully seated and meshes cleanly with mating gears before returning the snowblower to service.

Snowblower helical gear 917-04973A replaces part numbers 717-04973A and 917-04973.