OEM - Ferris 5101755S - Ferris mower blades - fits all 61 inch Ferris lawnmowers

What It Is

The Ferris 5101755S is an OEM replacement blade set for 61-inch Ferris commercial zero-turn mowers. It is designed for high-use turf maintenance, delivering a clean cut on fine grass while handling debris in residential or commercial lawns.

Fitment & Compatibility

Before buying, confirm your mower deck measures exactly 61 inches (not 60 or 72). This blade set fits all Ferris models with a 61-inch deck, including the IS2000Z, IS2100Z, IS3100Z, and IS3200Z series. Measure your existing blade length (should be 20.5 inches), center hole diameter (must be 1 inch), and spindle bolt pattern. OEM blades are precision-balanced and heat-treated; aftermarket alternatives may differ in thickness or hardness, which can affect cut quality and spindle wear. Check your owner’s manual or Ferris parts diagram for the exact part number cross-reference.

Key Things to Know

• Quality & Durability – OEM Ferris blades are made from high-carbon steel with a hardened edge, lasting longer than many budget aftermarket sets when used on commercial schedules.
• Installation – Moderate difficulty; you’ll need a torque wrench (specs: 70-90 ft-lbs for spindle bolts) and a blade puller if bolts are seized. Always lift the deck safely and disconnect the spark plug.
• Common Gotchas – Do not mix OEM with aftermarket blades on the same spindle—it causes vibration and uneven cutting. Also, check for deck leveling after installation; new blades can change cutting height by 1/8 inch.
• Maintenance – Sharpen every 25 hours of use or after hitting debris. Replace if bent or nicked; sharpening a damaged blade risks imbalance and spindle bearing failure.

Should You Buy It

If you own a 61-inch Ferris mower and need a reliable, factory-matched blade set for consistent cut quality and long life, this is the right choice. It’s ideal for commercial operators who can’t afford downtime from mismatched or low-grade blades. For occasional home use on a Ferris, you might save money with a reputable aftermarket set, but OEM is the safer bet for performance and deck balance.