General description Introducing the Scooter Dirt Bike Motorcycle Multi-Purpose Crankshaft Tool Installation Set, designed for efficient and precise crankshaft installation. This high-quality tool set is made from hardened steel and includes three sockets (M10, M12, M14) to accommodate various models. Technical specifications Material: Hardened steel Socket sizes: M10, M12, M14 Measurement allowed error: +/- 1-3 cm Installation Apply a thin layer of high-temperature resistant grease on the bearing seat. Carefully knock the bearing into place along the outer ring, avoiding the center. Once the bearing is in place, a distinct sound will indicate proper installation. Grease the inner ring of the bearing before inserting the crankshaft. Tighten the nut from the opposite end while gently pulling the crankshaft into position. Use sealant and pull the crankshaft into the other half. If the crankshaft is misaligned, use tools like a feeler gauge to determine the offset and adjust accordingly.