134149 Mower Blades Replacement for 42'' Craftsman LT1000 LT2000 YS4500 Husqvarna Poulan Pro,Mulching Blades Replace for 422719 777134149 424752 532134149

What It Is

This is a set of three mulching blades designed for 42-inch cutting decks on select Craftsman, Husqvarna, and Poulan Pro lawn tractors. They replace OEM part numbers 422719, 777134149, 424752, and 532134149, and are intended for mulching grass clippings into fine particles rather than side-discharging or bagging.

Fitment & Compatibility

Before buying, confirm your mower has a 42-inch deck (measure cutting width from blade tip to blade tip). These blades fit many Craftsman LT1000, LT2000, and YS4500 models, as well as Husqvarna and Poulan Pro tractors with compatible spindles. Check your current blade’s part number against the listed OEM numbers. Also verify the center hole diameter (typically 1-inch or 7/8-inch) and the blade length (should be approximately 20.5 inches from tip to tip). If your deck uses a different spindle pattern or offset, these won’t work.

Key Things to Know

• Mulching vs. standard blades: These have a curved, high-lift design to recut clippings. They’re not ideal for bagging or side-discharge unless you remove the mulching plug.
• Installation difficulty: Moderate. You’ll need a socket wrench, torque wrench (recommended 70-90 ft-lbs), and possibly a blade removal tool. Always disconnect the spark plug first.
• Common gotchas: Ensure the blades are oriented with the cutting edge facing the direction of rotation. Also, if your deck has a single blade mount, this three-blade set may require a different spindle adapter.
• Quality: These are aftermarket blades, often made from hardened steel. They may be slightly thinner than OEM, but user reviews indicate good durability for residential use.

Should You Buy It

If you own a 42-inch Craftsman, Husqvarna, or Poulan Pro tractor and want a budget-friendly mulching upgrade, this set is a solid choice. It’s best for homeowners with standard grass conditions who prefer fine mulching over bagging. Avoid if you need OEM exactness or have a deck with non-standard spindle spacing.