If you own a Husqvarna Special 42 lawn tractor, you know that keeping the blades sharp is key to a clean, healthy cut. Dull blades tear grass instead of slicing it, leaving a ragged edge that invites disease. Whether you are mulching leaves, side discharging clippings, or bagging for a pristine lawn, the right blade set makes all the difference. In this guide, we review four top blade options for your 42-inch deck, from budget-friendly replacements to OEM quality kits. We will help you match the best blade to your mowing style and budget.

For more on maintaining your Husqvarna equipment, check out our Husqvarna category page for additional tips and product comparisons.

Buying Guide

Blade Material and Durability

The material of your mower blades determines how long they stay sharp and resist wear. Most premium blades are forged from hardened steel, which holds an edge longer than standard stamped steel. The Husqvarna OEM blades use hardened steel designed to run smoother and stay sharper through many mowing sessions. Budget options like MaxPower and UDC Parts also use high-strength steel with a protective coating that wears off after the first cut, revealing a sharp edge.

For a deeper look at blade maintenance, read our best All-Terrain mowers for hilly lawns guide, which covers blade care for challenging terrain.

Compatibility and Fit

Not all 42-inch blades fit every Husqvarna Special 42 model. Check your mower’s deck type and OEM part number before purchasing. The MaxPower 2-blade set replaces OEM numbers like 138498 and 138971, fitting many Poulan, Husqvarna, and Craftsman models. The UDC Parts set is compatible with a wide range of Husqvarna and Craftsman tractors, including the YTH18542 and YTH1542XP. Always measure your old blade length and center hole shape to confirm compatibility.

If you have a different mower brand, our PowerSmart 21-Inch gas push lawn mower review may offer useful insights for smaller decks.

Blade Type: Mulching vs. Standard

Your mowing needs dictate whether you choose mulching blades or standard lift blades. Mulching blades have a curved design that recirculates clippings for finer cutting, ideal for returning nutrients to the lawn. The Husqvarna 42-Inch Mulching Blades and the Husqvarna HU42 Mulch Kit both specialize in this task. Standard blades like the MaxPower set work well for side discharge or bagging, offering a clean cut without the extra lift.

For more on mulching versus bagging, see our worx landroid vs husqvarna automower, which discusses cutting methods for robotic mowers.

Ease of Installation

Replacing mower blades should be straightforward, but some kits include extra hardware that simplifies the process. The Husqvarna HU42 Mulch Kit comes with a mulch plate, blades, and mounting hardware for a complete upgrade. The UDC Parts set installs quickly with a direct fit, requiring no modifications. Most blades use a 5-point star center hole that matches Husqvarna’s spindle design. Always use a torque wrench to tighten blade bolts to manufacturer specifications.

Final Thoughts

Choosing the right blade for your Husqvarna Special 42 depends on your mowing habits and budget. For a budget-friendly option that delivers reliable performance, the MaxPower 561713B 2-Blade Set for 42″ Cut is a solid choice with excellent ratings and USA manufacturing. If you prioritize mulching and OEM quality, the Husqvarna 42-Inch Mulching Lawn Mower Blades offer hardened steel and a quieter cut, making them ideal for lawns that need frequent mulching. Both options will keep your lawn looking its best all season.

Frequently Asked Questions

How often should I replace my Husqvarna Special 42 blades?

You should replace your blades every 25 hours of mowing or at least once per season. Dull blades tear grass and reduce mower efficiency. Inspect them regularly for nicks or bending.

Can I use mulching blades on a Husqvarna Special 42 for side discharge?

Yes, mulching blades can be used for side discharge, but they are optimized for recirculating clippings. For best results with side discharge, standard lift blades are recommended. The MaxPower set is a good option for that purpose.

Are aftermarket blades as good as OEM Husqvarna blades?

Aftermarket blades from brands like MaxPower and UDC Parts are often made from high-quality steel and offer similar performance at a lower price. They are a great value if you match the OEM part number correctly. For exact fit and durability, OEM blades remain a top choice.

Do I need to sharpen new blades before use?

Most new blades come pre-sharpened and coated for protection. The coating wears off during the first cut, revealing a sharp edge. You can resharpen them later as needed, but no initial sharpening is necessary.