MTD Tiller Idler Pulley 756-0405

Basic information

• Part name: Tiller idler pulley
• Manufacturer: MTD
• Category: Tiller pulleys and drive components
• Primary function: Guides and maintains tension on the drive belt so the tillers drive system operates smoothly

Technical specifications

• Outside diameter: 3.75 inches

Installation & compatibility

• Compatible models: Fits select MTD, Craftsman, and Ryobi tillers; confirm compatibility using your models parts diagrams
• Installation difficulty: Medium; requires removing the existing idler pulley and positioning the replacement on its mount
• Tools required: Socket set, wrench, possibly a pulley tool

Additional information

This tiller idler pulley, part number 756-0405, rides in the tillers drive belt path to keep the belt guided and tensioned as the machine runs. It helps keep the belt aligned and supports smooth engagement of the drive system so power transfers efficiently from the engine to the tines.

If the idler pulleys groove wears or the bearing fails, the belt can slip, make noise, or wear unevenly. You might notice reduced tiller performance, belt squeal, or vibration in the drive area if the pulley is worn or damaged. Stiff or seized rotation can also interfere with proper belt tension and reduce efficiency.

Disconnect the spark plug wire or battery, depending on your tillers design, before starting the repair to prevent accidental startup. The pulley and drive area can have sharp edges, so wearing work gloves can help protect your hands during installation. Make sure the pulley is seated correctly and the belt tracks properly before using the tiller.

Tiller idler pulley 756-0405 replaces part numbers GW-1724488, 756-0405, 1626-104, 1724488, and 1714742.