The Husqvarna 581354501 Lawn Mower Blade Brake/Clutch Tension Arm Assembly is a replacement component designed for compatible Husqvarna lawn mower equipment. The tension arm assembly plays an important role in the blade brake and clutch system, helping maintain proper belt tension and controlling the blade drive pulley. It allows the blade drive pulley to stop moving when the blade co... https://www.wholetoolbox.com/husqvarna-581354501-lawn-mower-blade-brake-clutch-tension-arm-assembly/581354501.html