Husqvarna 3 Pack 539113312 Blade Fits EZ6124 MZ61 M-ZT61 Z560 Z460X MZ6128 OEM

What It Is

This is a set of three OEM Husqvarna 539113312 replacement blades designed for 61-inch zero-turn mowers used in commercial and large residential mowing. They’re high-lift blades meant to improve grass clipping discharge and bagging performance on high-horsepower decks.

Fitment & Compatibility

Before buying, verify your mower’s deck size is exactly 61 inches — this set only fits 61-inch decks, not 54-inch or 72-inch. Compatible models include Husqvarna EZ6124, MZ61, M-ZT61, Z560, Z460X, and MZ6128. Also fits some Rancher and ProFlex models with the same deck. Measure your existing blade length (should be 21.5 inches from tip to tip) and center hole diameter (1 inch). These are OEM Husqvarna blades, so they match factory specs exactly; aftermarket alternatives may vary in thickness or balance. Check your mower’s manual or look for a “539113312” stamp on your current blades.

Key Things to Know

• Installation is moderate. You’ll need a torque wrench and a 15/16-inch socket. Torque blade bolts to 70-80 ft-lbs — too loose and blades can detach; too tight and bolts may snap.
• High-lift design creates strong suction, great for thick or wet grass, but increases engine load and wear on belts/deck spindles. Not ideal for sandy or dusty conditions (accelerates blade dulling).
• Balance is critical. Even new OEM blades can be slightly off. Always balance them before mounting — an unbalanced blade causes vibration, poor cut, and spindle damage.
• Sharpen after 8-10 hours of heavy use for best cut quality. These blades are tough but dull faster in coarse or debris-filled lawns.

Should You Buy It

If you own a compatible 61-inch Husqvarna zero-turn and want a guaranteed fit with factory performance, this OEM set is the right call — it’s priced competitively against aftermarket options and eliminates guesswork. For occasional residential use on smaller lawns, a cheaper aftermarket set may suffice, but for commercial operators or anyone demanding consistent cut quality, these are worth the premium.