The motor shaft consists of a woman cone and also a male cone. The male cone is mounted to the splined clutch shaft to slide on it. It has a friction area around the conical part. When the clutch is engaged (clutch pedal up) the motor and gearbox are related, https://clutchplate86418.humor-blog.com/32040566/new-step-by-step-map-for-clutch-kereta