iKer Blade Balancer Replace 339075B Lawn Mower Blade Balancer Magnetic Wall Mount 42-047 (Balancer-Black)

What It Is

The iKer Blade Balancer (model Balancer-Black) is a magnetic wall-mounted tool designed to check and correct blade balance on lawn mowers, zero-turn mowers, and other OPE (outdoor power equipment). It replaces the OEM 339075B and 42-047 balancers, intended for DIY maintenance and sharpening workflows.

Fitment & Compatibility

• Deck size: Universal – fits any blade with a center hole up to 1 inch diameter (most residential and commercial mowers).
• Brand/models: Works with all major brands (Honda, Toro, John Deere, Craftsman, etc.). Not mower-specific.
• OEM cross-reference: Direct replacement for OEM part numbers 339075B and 42-047. Aftermarket accessory, not an OEM part.
• Check before buying: Measure your blade’s center hole diameter (must be ≤1 inch). Verify wall space for the magnetic mount – requires a clean, flat steel surface or included adhesive backing. Not for blades with off-center or non-round holes.

Key Things to Know

• Quality: Magnetic mount is strong (rated to hold typical lawn blades up to ~22 inches). Some users report the magnet may lose grip over time if exposed to heavy vibration or heat.
• Installation: Easy – peel and stick or screw-mount to a steel surface. No wiring or tools needed. Leveling is critical for accurate balance; use a small level before mounting.
• Common gotchas: Blade must be clean and dry for the magnet to hold securely. The balancer won’t work with blades that have heavy rust or paint buildup. For zero-turn blades over 18 inches, consider a cone-style balancer instead for better stability.
• Accuracy: Good for general sharpening – will detect a 1/8-inch weight difference. Not suitable for precision racing or competition mowing.

Should You Buy It

Buy this if you sharpen your own mower blades and want a fast, wall-mounted balance check without the hassle of cone balancers. It’s ideal for homeowners with 1-2 mowers who value convenience and compact storage. Skip it if you have very large or heavy commercial blades, or if you need lab-grade precision – a cone balancer or electronic balancer is better for those cases.