5102831 Flat Idler Pulley for Ferris 48 52 61 72 Inch Deck Lawn Mower 5104717

Product Overview

The flat idler pulley maintains proper belt tension on Ferris mower decks, preventing slippage and extending belt life. This flat idler pulley is a direct-fit replacement for worn or seized factory pulleys on select models, restoring reliable drive performance. Built with heavy-duty materials, it withstands high-speed mowing without premature bearing failure.

Key Features & Performance

• Precision sealed ball bearing reduces friction and extends service life
• Flat steel pulley body ensures consistent belt contact and minimal wear
• Exact OEM-form dimensions for quick drop-in installation
• Heat-treated construction resists deformation under heavy load
• Corrosion-resistant finish guards against moisture and debris

Fitment & Compatibility

• Ferris zero-turn mowers with 48-inch deck
• Ferris zero-turn mowers with 52-inch deck
• Ferris zero-turn mowers with 61-inch deck
• Ferris zero-turn mowers with 72-inch deck
• Replaces OEM part numbers 5102831 and 5104717

Common Uses

• Replacing a seized, noisy, or wobbling belt idler pulley on Ferris stand-on and zero-turn mowers
• Maintaining consistent deck belt tension during heavy mulching operations
• Restoring proper blade engagement on large-acreage commercial mowers
• Preventing belt slippage and uneven cutting in bagging setups

Technical Specifications

• Part Number(s): 5102831, 5104717
• Type: Flat Idler Pulley
• Material: Steel body with sealed ball bearing
• Compatible Deck Sizes: 48-inch, 52-inch, 61-inch, 72-inch

Frequently Asked Questions

Q: Will this idler pulley fit my Ferris IS 700Z with a 52-inch deck? A: Yes, this flat idler pulley is a direct replacement for the deck idler on all Ferris models equipped with 48-, 52-, 61-, or 72-inch decks, including the IS series.

Q: How do I know if my idler pulley needs replacement? A: Look for belt squealing, excessive vibration, visible wobble, or rough rotation when the pulley is spun by hand; replacing the idler pulley resolves these issues.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.