Pet clutch skids on the main shaft to rotate with it. All the equipment within the layshaft is set with it.  If the left-hand Doggy clutch is introduced to skid on the left throughout the gearshift lever, it messes with the clutch gear, as well as higher-velocity gear is realized. https://gearboxauto97418.bleepblogs.com/34259934/how-gearbox-auto-can-save-you-time-stress-and-money