Oregon Gator Mulcher 3-N-1 Blade For 42-Inch Murray Lawn Mowers 97-601

What It Is

The Oregon Gator Mulcher 97-601 is a 3-in-1 blade designed for 42-inch Murray lawn mower decks, offering mulching, bagging, and side-discharge capability. It’s ideal for homeowners who want cleaner cuts and better leaf shredding than standard blades provide.

Fitment & Compatibility

Before buying, confirm your mower has a 42-inch cutting deck (measure from blade tip to tip across the deck). This blade fits most Murray models with a 5-point star center hole and a 1-inch diameter center hole. It’s an aftermarket replacement for OEM part numbers 656990-0310, 656990-0311, and 656990-0312. Also check blade length: 21 inches, with a 1/4-inch thickness. It will not fit decks smaller than 42 inches or mowers with a different spindle pattern (e.g., some Craftsman or MTD models). Measure your existing blade’s length and hole pattern to be safe.

Key Things to Buy

• Quality: Oregon’s Gator Mulcher uses heat-treated steel with a serrated edge for better mulching than standard blades. It’s durable but may dull faster on sandy or rocky lawns.
• Installation: Easy to swap—just remove the old blade, clean the spindle, and torque the bolt to 70-85 ft-lbs. No special tools needed beyond a socket wrench and a blade removal tool (or a block of wood to hold the blade).
• Common gotchas: The “3-in-1” feature works best when you keep the blade sharp—dull edges reduce mulching and can leave uncut clumps. Also, check for deck clearance: the blade’s curved wings require at least 1/2 inch of clearance above the deck’s underside to avoid hitting the housing.
• Noise: Serrated blades can be slightly louder than standard ones, especially on dry grass.

Should You Buy It

If you have a 42-inch Murray mower and want better mulching without switching blades for bagging or discharge, this is a solid, affordable upgrade. It’s especially good for leaf-heavy lawns in fall. But if you mow a small, clean lawn, a standard blade may suffice and save you $10.