3-Pack 3971900 Lawn Mower Blades Compatible with Ariens Gravely Zoom Zero Turn Mowers, Fits 50" Decks, Replaces 03746500 3746500 13177

3 packs of 3971900 lawn mower blade replacement Specification: - Length: 17 5/16 inches - Width: 2 1/4 inch - Center hole diameter: 5/8 inches (round) - Thickness: 0.2 inches - Rotate: clockwise - Numbers in the packaging: 3 packs Replacement number: -3971900 -3746500 -03971900 -03746500 Compatible Model: Specially for Gra Vely 911412 (WAW 34) Gra Vely 911411 (Waw 34) Gra Vely 915142 (ZT 42) Gra Vely 915144 (ZT 50) Riens Zoom 915131 Riens Zoom 915141 Riens Zoom 915143 Why do you need to change the lawn mower blade regularly? 1. Over time, the mower becomes dim or damaged, reducing the cutting efficiency of the mower. A new, sharp blade set will significantly improve the performance of the mower, ensuring clean and even cutting across the lawn. 2. Weared or bent blades can cause excessive vibration, which can damage the mower's moving shaft and bearings. Regular replacement of blades helps extend the life of the mower and maintains its reliability, ensuring it continues to go smoothly. Note: When removing the blade, pay attention to its orientation. Install the new blade in the same direction for proper performance.