Briggs and Stratton 1757866BMYP Deck Lift

What It Is

The Briggs and Stratton 1757866BMYP Deck Lift is an OEM replacement lift mechanism for the front axle of select lawn tractors, designed to raise and lower the cutting deck via a foot pedal or hand lever. It’s intended for residential or light commercial mowers with a 38–46-inch deck.

Fitment & Compatibility

• Exact fit: Confirmed for Briggs & Stratton engines on MTD, Troy-Bilt, Husqvarna, and Craftsman tractors (late 1990s to early 2010s models), typically with 38–46-inch stamped decks.
• Measure before buying: Deck lift bracket width (center-to-center mounting holes) must be 2.5 inches; check your old part’s part number—this replaces 1757866SM, 1757866, and 1757866YP.
• OEM vs. aftermarket: This is OEM Briggs, so it matches factory specs. Aftermarket versions (e.g., from Stens or Oregon) may require minor bracket bending or shimming.
• Not for: Zero-turn mowers, walk-behinds, or decks over 48 inches (geometry changes).

Key Things to Know

• Quality: Sturdy steel with black powder coat—holds up to regular use, but the pivot bushing can wear over time. Grease the pin at installation.
• Installation difficulty: Moderate (2/5). You’ll need a socket set, penetrating oil for rusted bolts, and a jack to support the deck. Expect 30–60 minutes.
• Common gotcha: The lift cable or spring often breaks separately—inspect those too. If your deck sags after install, the lift rod may be bent; replace it simultaneously.
• No hardware included: You’ll reuse your original bolts and clevis pins; buy new ones if rusted.

Should You Buy It

Buy this if your deck won’t stay up, the lift pedal feels sloppy, or the bracket is cracked. It’s the right choice for direct OEM replacement on common MTD-platform tractors with 38–46-inch decks. Skip it if you need a complete lift system (cables, springs, or pulleys) or have a zero-turn mower—those require different parts.