Chosen Solution

How does one change the torque converter on a cb400a Hondamatic motorcycle?

Wayne, it goes something like this:" Drain all oil from the engine Remove the torque converter case

Remove the torque converter by applying a screwdriver blade to the groove in its periphery

NOTE: Use care not to damage the gasket surface of the crankcase. REmove the needle roller bearings. Check them for wear, damage or other defects.