Loosen and tighten the 36mm OEM 8020 36mm (M24 x 2.0 x 15) rear wheel axle nut, for drive belt tension or alignment adjustment, without removing the muffler. The built-in square allows use with a 1/2" drive wrench to apply torque from an offset position. Removing rear muffler is not required. Note: See 961440 for JIMS 3rd. hand axle locker tool. It prevents axle turning which may inadvertently change belt tension
