Bularie flat idler pulley 2-pack for John Deere L100 L120 42" deck — hardened steel, precision bearing

Bularie 756-05034A flat idler pulley 2-pack replaces John Deere GY22082/GY20629 and MTD 756-05034A to restore smooth deck belt tension and reliable mower performance.

If your mower deck belt is slipping, squealing, or shows uneven wear, this pair of replacement flat idler pulleys is designed to bring back steady belt tracking and dependable power transfer. Built from hardened steel with precision bearings, the Bularie pulleys are sized to match common OEM specifications and include mounting nuts for quick installation. They suit a variety of John Deere, MTD, Craftsman and Troy-Bilt models commonly used with 42" decks and similar setups.

How will these pulleys improve my mower’s belt performance?

These pulleys maintain consistent tension and alignment for the deck belt so it runs true and transfers engine power efficiently to the blades. Replacing worn or damaged idlers reduces belt slip, decreases noise, and helps extend the belt’s life.

• Hardened steel construction resists deformation under load
• Precision bearings reduce friction for smoother rotation
• Correct outer and inner diameters for OEM-equivalent belt seating
• Sold as a 2-pack to service both sides or have a spare on hand

Which mower models and part numbers are compatible with this pulley?

The Bularie pulleys are manufactured to match common OEM reference numbers used across several brands. They are compatible with many John Deere D and L series lawn tractors, select Cub Cadet and MTD models, plus Craftsman and Troy-Bilt part listings.

• Direct OEM cross-references: John Deere GY22082, GY20629, GY20639, GY20110
• MTD / Craftsman numbers: 756-05034A, 756-05034; Craftsman 247273720/247273721
• Fits a range of models including John Deere L100/L110/L120 series and MTD 13A/17A model families
• Check deck configuration and dimensions against listed specs before ordering

What are the exact dimensions and what’s in the package?

Knowing the pulley dimensions ensures correct fitment on your mower deck spindle or bracket. Each pack contains two pulleys plus two nuts, and the product tolerances are stated to help you verify compatibility.

• Inner diameter (ID): 11/16" — fits common spindle bolt sizes
• Outer diameter (OD): 5 1/4"; Height (H): 1 3/4" with tolerance ±0.1"–±0.2"
• Included hardware: 2 pulleys and 2 nuts for straightforward replacement
• Construction: hardened steel body with sealed precision bearing

How difficult is installation and what tools will I need?

Installation is straightforward for anyone comfortable performing basic mower maintenance. Removing the old idler, fitting the new pulley onto the spindle, and tightening the nut is typically all that’s required.

• Common tools: wrenches/sockets sized for 11/16" ID spindle nut and retaining fasteners
• Typical steps: support deck, loosen belt tension, remove old idler, install new pulley, restore belt tension
• Allow time to compare OEM part and dimensions before final tightening
• If unsure, consult your mower manual or a service technician

Who is this for? The Bularie 756-05034A 2-pack is intended for homeowners, small property owners, and service shops replacing worn idler pulleys on John Deere, MTD, Craftsman, Cub Cadet and Troy-Bilt lawn tractors. Choose these pulleys when you need OEM-equivalent fitment, durable steel construction, and a quick supply of two units plus nuts to get your deck back to reliable cutting performance.