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

What It Is

This is a magnetic wall-mount blade balancer designed to store and balance lawn mower blades. It replaces OEM part #42-047 and #339075B, intended for residential or light-commercial mowers with standard blade sizes up to 22 inches.

Fitment & Compatibility

• Deck size: Works with blades up to 22 inches long and 1 inch wide. Not for zero-turn or commercial blades over 22 inches.
• Mounting: Requires a flat metal surface (e.g., steel wall, tool chest) or a non-magnetic surface if you install the included adhesive plate. Check your wall material before buying—drywall alone won’t hold.
• OEM replacement: Fits Craftsman, Husqvarna, MTD, Troy-Bilt, and many universal mowers using a magnetic balancer. Does not replace cone-style or bubble balancers.
• Measurements: The magnet is 2.5 x 1.5 inches with a 35-lb pull rating. Verify your blade’s center hole is at least 5/8 inch to fit over the magnet’s post.

Key Things to Know

• Quality: Magnet is strong enough for standard blades but may slip if the blade is bent or rusty. Some users report the black paint chips over time.
• Installation: Easy—mount on a clean, dry metal surface. No tools needed for magnetic mount; adhesive plate requires cleaning surface and waiting 24 hours for full bond.
• Gotchas: The balancer only checks side-to-side balance, not tip-to-tip. For multi-blade decks, you’ll need one per blade. Do not use on damp walls—magnet can slide.
• Common issue: If your blade has a non-standard center hole (e.g., star-shaped or offset), the post may not fit. Measure first.

Should You Buy It

Buy this if you have a single-blade walk-behind mower up to 22 inches, want quick wall storage, and already own a blade sharpener. Skip it if you need a portable balancer, have a zero-turn with 23+ inch blades, or prefer a traditional cone balancer that works on any surface.