Assemble and Test Rotating Head

What happens here

Attach the engine mounting head unit to the top of the vertical column. This unit typically slides onto the column and is secured with a large bolt, washer, and nut. Ensure the head unit is oriented correctly according to the instructions. The head unit should be able to rotate freely until locked. After installation, test the rotation mechanism to ensure it moves smoothly and locks securely in various positions using its handle or lever.

Goal: Secure the engine mounting head and verify its rotation and locking functionality.