Exactly how to measure the shaft of an outboard motor
If you're shopping for a new engine or swapping one out, knowing how to measure the shaft of an outboard motor is the most important step to get right before you spend any money. Honestly, it's one of those things that seems simple until you're standing behind your boat with a tape measure, wondering exactly where "the bottom" is. If the shaft is too short, your prop will just suck air and you won't go anywhere. If it's too long, you'll create massive drag and probably hit every rock in the lake. ...