MaxPower 561745B 3 Blade Set for Many 42 in. Craftsman, Husqvarna, Poulan Mowers Replaces OEM # 539-112078

What It Is

This is a set of three 42-inch mower blades designed for multiple popular riding mower brands. They replace OEM part # 539-112078 and are intended for standard mulching or bagging use on residential lawns.

Fitment & Compatibility

Before buying, confirm your mower deck measures exactly 42 inches (not 46" or 54"). This set fits many Craftsman, Husqvarna, and Poulan models from the 2000s onward, but not all—check your owner’s manual or current blade part number against 539-112078. Measure your existing blade length (should be about 21 inches each), center hole diameter (typically 1 inch), and offset/angle. These are aftermarket blades, so they may differ slightly from OEM in thickness or shape—verify the blade’s lift and cutting edge match your deck’s design.

Key Things to Know

• Quality: Made from heat-treated steel, but some users report slightly thinner metal than genuine OEM blades. Fine for normal residential use, but may not hold up as long in rocky or heavy-duty conditions.
• Installation: Straightforward—just remove the old blades, clean the spindle, and torque bolts to 70–90 ft-lbs. No special tools needed beyond a socket wrench and a block of wood to stop the blade.
• Common gotcha: These blades are often packaged as “universal” but may require minor filing of the center hole or alignment pin slot to fit certain older decks. Always check for proper clearance before tightening.
• Balance: Check each blade for balance before installing; an unbalanced set causes vibration and poor cut quality. A simple nail-in-wall test works.

Should You Buy It

This is a solid budget-friendly choice if you own a common 42-inch Craftsman, Husqvarna, or Poulan mower and need a reliable replacement for mulching or bagging. It’s not for heavy commercial use or decks with unusual blade patterns, but for regular residential mowing, the price and 4.6-star rating make it a safe bet.