How to set the timing on a Yamaha XS400 motorcycle 

Your supposed to set points prior to ignition timing, If you need to move the points to get it timed correctly, the points were t correct.

Good, thorough video bc. Thanks

That's not how you find the compression stroke, tdc yes. But not compression stoke. You need to make sure you're at tdc after the intake valve closes.

Get proper screwdrivers. Those are not Phillips screws. Use the screwdriver that came with the kit or buy a set of proper JIS screwdrivers. Phillips drivers will strip the head on a tight screw.

first thing to do is grab a camera and upload a video at better then 240 thanks