5102831 Flat Idler Pulley For Ferris 48" 52" 61" 72" Deck Lawn Mower 5104717

Flat Idler Pulley for Ferris

This flat idler pulley (OEM cross-reference 5102831, 5104717) maintains belt tension and reduces slippage on Ferris lawn mowers with 48-inch, 52-inch, 61-inch, and 72-inch cutting decks.

Overview

The flat idler pulley is a direct replacement for worn or damaged belt tensioners on Ferris zero-turn and walk-behind mowers. Engineered to keep the deck belt properly tensioned, this flat idler pulley prevents slipping and ensures consistent blade engagement during mowing. It is designed for landscapers and homeowners maintaining Ferris 48 to 72-inch deck mowers across a range of model years.

Built For Performance

• Direct replacement for Ferris part numbers 5102831 and 5104717
• Flat pulley design maintains uniform belt contact
• High-quality sealed bearing for smooth rotation and longer service life
• Precision-machined steel construction resists wear under high belt loads
• Corrosion-resistant coating stands up to grass clippings and moisture
• Easy bolt-on installation with standard tools

Fits These Machines

• for Ferris 48-inch deck lawn mowers
• for Ferris 52-inch deck lawn mowers
• for Ferris 61-inch deck lawn mowers
• for Ferris 72-inch deck lawn mowers

On-The-Job Use

• Maintaining consistent belt tension during commercial mowing on large properties
• Replacing a squealing or seized idler pulley to restore smooth deck operation
• Preventing belt throw-off on steep slopes and uneven terrain
• Routine maintenance for Ferris mowers used in landscaping businesses
• Replacing high-hour pulleys to reduce downtime during peak mowing season

Specs At A Glance

Good To Know

Q: How can I confirm this idler pulley fits my Ferris mower? A: Compare your deck size and existing part numbers to the listed cross-references 5102831 and 5104717. The pulley fits 48-inch through 72-inch decks on a wide range of Ferris models.

Q: What are signs that an idler pulley needs replacement? A: Listen for a high-pitched squeal from the deck area, check for wobble or a rough-turning bearing, and inspect for flat spots or cracks on the pulley surface.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.