Finding the right propeller for your outboard can significantly impact your boat’s performance and your boating enjoyment. If your propeller is too big or too small (in pitch and diameter) you’ll be frustrated by either sluggish acceleration or low top-end speed. The wrong size propeller can also cause wear and tear on your engine.
If you’re in the market for a second-hand powerboat or outboard only, it’s a good idea to arrange a pre-purchase inspection from a qualified mechanic. But before you do, there are some checks you can do first.
One of the most common repair jobs we’ve encountered this summer are burnt out water pump impellers. In many of cases I believe this can be easily avoided, as faulty ear muffs are a major contributor.