Pet clutch skids on the principle shaft to rotate with it. All the gear to the layshaft is mounted with it.  Once the still left-hand Puppy clutch is introduced to skid on the left in the gearshift lever, it messes with the clutch gear, plus the upper-velocity gear is attained. https://hectorrdnwe.blogpixi.com/34043448/the-best-side-of-gearbox-auto