8TEN LawnRAZOR Blade for Husqvarna AYP Craftsman Poulan 1742 1842 42 inch Deck 138971 134149 (Notched High Lift) 4 Pack

What It Is

The 8TEN LawnRAZOR Notched High Lift Blade (4-pack) is an aftermarket replacement blade set designed for 42-inch cutting decks on popular lawn tractors. It’s intended for high-lift grass clipping discharge and bagging performance, not mulching.

Fitment & Compatibility

• Deck size: 42-inch. Confirm your deck measures exactly 42″ cutting width.
• Common compatible models: Husqvarna (e.g., 1742, 1842), AYP (American Yard Products), Craftsman, Poulan, and many other brands using a 42″ stamped deck with a 2-hole center mount.
• OEM cross-references: Replaces Husqvarna/AYP part numbers 138971 and 134149. Verify your OEM blade part number matches one of these.
• Measurements: Blade length is 20.5 inches, center hole diameter is 7/8″, and the two mounting holes are spaced 3-3/8″ apart. Measure your old blade’s length, hole pattern, and thickness before buying.
• Not compatible with 42″ decks that use a 3-hole or oval-center mount (e.g., some older Murray or MTD models).

Key Things to Know

• High lift design: These blades create strong upward airflow for bagging, but they increase engine load and may cause more clippings to blow sideways if your deck lacks a proper discharge chute.
• Not for mulching: The notched, high-lift shape is poor for mulching. If you want fine clippings left on the lawn, look for a mulching blade.
• Installation: Straightforward – remove old blade, clean spindle, install with the notched edge facing upward (toward deck). Torque bolts to 70–90 ft-lbs. No special tools needed beyond a socket wrench.
• Quality notes: 8TEN blades are heat-treated steel, but some users report they are slightly thinner than OEM blades. Check for balanced shipping – occasionally one blade may be slightly off-balance, requiring a quick file or reorder.

Should You Buy It

If you own a Husqvarna, Craftsman, or AYP 42″ deck tractor and need a reliable, affordable replacement for bagging or side-discharge mowing, this 4-pack offers good value. It’s not for mulching or heavy-duty commercial use. Measure your old blade carefully, and you’ll save over buying OEM singles.