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5102831 Flat Idler Pulley for Ferris 48 52 61 72 Inch Deck Lawn Mower 5104717
$72.59
Sale price
$72.59
Regular price
Available to Order
This Flat Idler Pulley is a replacement deck belt idler pulley compatible with Ferris lawn mowers equipped with 48-inch, 52-inch, 61-inch, and 72-inch cutting decks and matches OEM Part# 5102831, 5104717.
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I needed a forklift part and wasn’t sure which one fit. They asked for the model and serial number, got back to me quickly, and made sure I ordered the right one. Really helpful.
Randy W. — Verified customer
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.