Lawn Mower Blade Adapter Kit 748-0376E 23MM Compatible with MTD Craftsman Troy-Bilt Ryobi Yard Machines Bolens Yard-Man Push Walk-Behind Mowers for MTD 748-0376 748-0376A 748-0376B 748-0376C

What It Is

This blade adapter kit (model 748-0376E) converts a standard 7-point star or 5-point star blade mounting pattern to a 23mm (0.906-inch) round center hole, allowing you to install universal blades on MTD-built push mowers. It’s designed for walk-behind mowers from brands like MTD, Craftsman, Troy-Bilt, Ryobi, Yard Machines, Bolens, and Yard-Man.

Fitment & Compatibility

Before buying, verify your mower’s OEM part number—this kit replaces MTD 748-0376, 748-0376A, 748-0376B, and 748-0376C. It fits most MTD/Craftsman/Troy-Bilt push mowers with a 23mm (approx. 0.906-inch) diameter crankshaft and a 5-point or 7-point star blade mount. Measure your crankshaft end diameter (not the blade hole) to confirm 23mm. Works with deck sizes from 20 to 22 inches typically. Not compatible with Honda, Toro, or John Deere engines—engine brand matters more than mower brand here.

Key Things to Know

• Quality varies: Some users report the adapter’s plastic bushing wears quickly, especially on uneven terrain or with frequent blade changes. Check for metal-reinforced alternatives if you mow rough ground.
• Installation is simple: Remove the old blade, slide the adapter over the crankshaft, then mount the new blade with the included bolt. Torque to 35-45 ft-lbs (check your manual).
• Common gotcha: The adapter must sit flush against the crankcase—if it’s loose, the blade can wobble. Use a feeler gauge to check for gap.
• Star pattern mismatch: Verify your mower’s original blade mount shape (5-point or 7-point star). The kit works with both, but some users find the fit too tight on older 7-point hubs.

Should You Buy It

Buy this if you own a push mower with an MTD-style 23mm crankshaft and need to switch to universal blades—it’s a cheap fix for worn-out original parts. Skip it if you want a metal adapter for heavy use or if your mower uses a different shaft size (like 7/8-inch or 1-inch). At $12.99, it’s a low-risk buy for occasional use, but don’t expect industrial durability.