My dad once took apart his motorcycle to change out a cylinder seal. He put it all back together and it wouldn't start. The mechanic at the shop heard the story, and then checked one thing: indeed my dad had forgotten to refuel it. That tech support tree is always worth checking.
Oh, man. Flashback to the time I painstakingly rebuilt the carburetor on my scooter, then spent way too long trying to figure out why it wouldn’t start.
