42-047 Blade Balancer, Magnetic Wall Mount Lawn Mower Blades Balancer, Compatible with Stihl/Troy/Husqvarna Lawn Mower Blades, Replace 42-047 339075B

What It Is

The 42-047 Blade Balancer is a magnetic wall-mount tool designed to check and correct blade balance for walk-behind and riding lawn mowers. It ensures even cutting and reduces vibration by identifying heavy spots on blades.

Fitment & Compatibility

• Universal Blade Fit: Works with most standard mower blades (up to 22 inches long), including Stihl, Troy-Bilt, Husqvarna, and Craftsman models.
• Mounting: Requires a steel surface (e.g., mower deck, tool box, or wall plate) for the magnetic base. Not for use on aluminum or plastic.
• OEM vs Aftermarket: Replaces Husqvarna part 42-047 and 339075B. Compatible with both OEM and aftermarket blades.
• Check Before Buying: Ensure your blade’s center hole is 1/2 to 5/8 inch (common sizes) to fit the balancer’s cone. Measure blade length and thickness—won’t fit oversized or very thick blades (e.g., mulching blades over 1/4 inch thick).

Key Things to Know

• Quality: Magnetic hold is strong (rated for 10 lbs), but the plastic cone can wear over time—inspect for cracks before each use.
• Installation Difficulty: Very easy—mount on a clean, dry steel surface; no tools needed. Balance takes 2–3 minutes per blade.
• Gotchas: The magnetic base may scratch painted surfaces; place a cloth underneath if mounting on a mower deck. Not for sharpening—balance only. If your blade is severely bent, replace it before balancing.
• Accuracy: Good for basic home use, but not as precise as professional electronic balancers. Acceptable for most residential mowers.

Should You Buy It

Buy this if you own multiple mowers and want a quick, no-fuss blade balancing solution that keeps your blades organized on a wall. It’s ideal for DIY homeowners who sharpen their own blades and want to reduce vibration. Skip it if you need precision balancing for commercial use or have non-standard blade sizes.