Snapper Snowblower Parallel Key 905850

Basic Information

• Part name: Snowblower parallel key
• Manufacturer: Briggs & Stratton
• Category: Snowblower hardware
• Primary function: Locks a pulley or gear to a shaft to maintain proper rotational alignment

Technical Specifications

• Width: 0.187 inch

Installation & Compatibility

• Compatible models: Fits select Snapper snowblower models; confirm capability using your models parts diagrams
• Installation Difficulty: Medium; may require partial disassembly
• Tools required: Punch, hammer

Additional Information

The snowblower parallel key, part number 905850, fits into a straight keyway on the shaft and engages a matching slot in a pulley or gear. This connection helps prevent the mounted component from slipping on the shaft so rotational force transfers correctly during operation.

If a pulley or gear spins without driving the connected component, the drive or auger movement drops under load while the shaft continues turning, or parts rotate out of sync despite engine rotation, the parallel key may be worn, sheared, or missing. Components that feel loose on the shaft or sudden loss of power transfer can also point to key issues.

Disconnect the spark plug wire before beginning the repair. Working with keyed shafts and metal parts can expose sharp edges, so work gloves can help protect your hands. Seat the key fully in the keyway and confirm the mating component fits flush before reconnecting the spark plug wire.