July 10, 2026
Are Lawn Mower Blades Reverse Thread: Full Guide
Most mower blade bolts use standard threading, but some manufacturers install reverse-threaded bolts to prevent loosening during high-speed blade rotation. Before forcing the bolt, check the owner’s manual or look for markings such as “LH” on the bolt head. Confirm the correct removal direction to avoid damaging the threads, bolt, or spindle assembly.