Maxpower 21 in Replacement Mower Blades for 42-inch Decks — 2-Blade Set, Five-Point Star Mount

The MaxPower 561713B is a two-blade replacement kit engineered to restore cutting performance on 42-inch deck Poulan, Husqvarna, and Craftsman mowers.

These two 21-inch blades are precision-sharpened at the factory, powder-coated for transit protection, and designed to match common OEM mounting patterns so you can swap them into compatible 42" cutting decks quickly. They replace a range of original part numbers and include the five-point star center hole used on many residential mower spindles. Read on to confirm fit, understand the advantages, and see how to get the best results from these blades.

Will these blades fit my 42-inch mower deck?

Compatibility depends on the blade length, width and center-mount pattern rather than brand alone. Each MaxPower blade measures 21 inches long and 2-1/4 inches wide and features the five-point star center hole used by several Poulan, Husqvarna and Craftsman models.

• Replacement for OEM numbers including 127843, 138498, 138971 and equivalents.
• Five-point star center hole to match common spindle plates on 42" decks.
• Confirm your existing blade measures 21" L x 2-1/4" W and has the same mounting hole.

How do these blades improve cutting and maintenance?

MaxPower blades arrive factory-sharpened to give a clean initial cut and reduce early tearing of grass. The powder-coat finish protects edges during shipping and storage; it rubs off on first use to expose the factory edge for consistent mowing performance.

• Factory-sharpened edge for immediate, even cutting.
• Powder-coating prevents corrosion and transit dings before first use.
• Two-blade set lets you replace both blades at once for balanced cutting.

What materials and construction features matter for durability?

These blades are manufactured to withstand typical residential mowing conditions while maintaining edge retention. The combination of stamped, heat-treated steel and a protective powder finish gives a durable cutting tool that resists bending and surface rust.

• Stamped, heat-treated steel provides stiffness and toughness.
• Powder coat shields metal until the blade is first used.
• Balanced pair reduces vibration and wear on spindles when installed together.

How should I install and care for these blades for best results?

Always disconnect spark plug and follow your mower’s service instructions before changing blades. Tighten mounting hardware to the torque recommended by your mower manufacturer and check blade balance and clearance after installation.

• Wear gloves and disconnect power before handling blades.
• Tighten retaining bolts to mower factory torque specs to prevent loosening.
• Sharpen periodically and inspect for bends or nicks; replace if damaged.

Who is this for: The MaxPower 561713B two-blade kit is aimed at homeowners and lawn-care DIYers who own a 42-inch deck Poulan, Husqvarna or Craftsman mower and want an affordable, ready-to-install OEM-style replacement. It’s also useful for those maintaining older machines that require specific part-number equivalents—if your current blade matches the 21" x 2-1/4" size and five-point star center hole, this set provides a durable, factory-sharpened option made in the USA for reliable lawn-cutting performance.