6. ENGINE REMOVAL ATV 300/250 Mounting Bolt and Nut Remove the rear lower mounting bolt and nut. Remove the rear upper mounting bolt and nut. Remove the front mounting bolts and nuts. Mounting Bolt and Nut Mounting Bolt and Nut Brackets Remove the four bolts for remove the left and right engine brackets. Bolts Remove the engine assembly to the left side of the machine. 6-6