How often to change spark plugs in outboard motor?

The ideal spark plug gap is 0.020”. This gap maintains the compression needed to produce maximum horsepower. All engines have a different optimum gap. Generally, the hotter the engine, the wider the gap needs to be. If your gap is too wide, you lose fuel economy and may even be damaging your engine. The gap should be checked frequently when you notice a drop in fuel mileage or you begin to hear a grinding sound when you try to start your engine.

How often to change spark plugs outboard engine?

In almost all marine engines, spark plugs should be changed every 1,000 hours of operation. The dipsticks on most engines are located on the lower end of the engine, so you should be able to see the mileage on your engine. If you are unsure of how many hours you have run your engine, you can refer back to your boat’s manual to find the hours to date.

How often to change spark plugs outboard motors?

Your boat’s spark plugs should be changed every 10,000 miles, or every 20 boat runs. Though this may seem like a lot, the truth is it’s not. That’s because your boat probably goes through on average 20 boat runs a year. Even if you’re running your boat hard every weekend, you should change out your spark plugs every 20 runs. This should be enough to keep your engine running properly and not let a spark plug burn out.

How often to change spark plugs outboard motors propeller?

Your boat’s manual will tell you how often to change the spark plugs. In general, you should change them every 30 to 60 hours of use. If you find that you have to change them more often, it’s best to see a mechanic to investigate further.

How often to change spark plugs outboard motor propeller?

If your boat has a manual prop, you should change it every time you take it out in the water. The reason is that the propeller has a thin coating of oil on it to lubricate the shaft and keep it from getting squeaky. Once the oil dries up, it will have a much harder time turning the spark plug and thus the motor will run much hotter. This can result in engine damage. You also don’t want to run a boat with a dry spark plug