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Do you want to use your outboard motor again after the winter season? Or have you not used your outboard motor for a long time for some other reason? In both cases, your outboard motor may not start. Or your outboard motor breaks down and no longer starts. This has several causes. We give you tips on how to enjoy using your outboard motor again during the summer season.

Starting problems with the outboard motor

In many cases the outboard motor is not used during the winter. This causes the engine to stand still for weeks or even months. This can prevent your outboard motor from starting. It is therefore important that you check whether the outboard motor will still start when the sailing season arrives.

Outboard motor does not start

Are you trying to start your outboard motor, but it won’t start? There is a good chance that this is due to old gasoline. Gasoline that is older than 4 weeks can no longer be used for your outboard motor. The old gasoline causes blockages in pipes and possibly in the carburetor. This is because the old fuel starts to clot. The result is that the outboard motor does not start.

Outboard motor fails and will not start

Your outboard motor breaks down and will no longer start. How is that possible? In this case too, old gasoline or damage to parts is often the cause. Here too, we recommend running the carburetor engine empty and sailing entirely on clean petrol.

Outboard motor does not start electrically

Your electric outboard motor does not start. The cause may be due to the power of your engine. Little or no power may be due to the starter motor or battery. Check that your battery is charged and that the battery cables are secure. If this all works properly, it could be the starter relay. Even more causes why your electric outboard motor does not start are a broken battery or starter motor, corroded main fuse, a ground switch or electrical connections that are not clean or poorly connected wiring.

3 quick checks you can do

Your outboard motor will not start. Then there are a number of things you can quickly check. A simple but often forgotten check is the dead man’s cable or the key for the ignition system. In addition, there are 3 things an outboard motor needs to start: a spark, fuel and air.

1 Spark from spark plugs

Your outboard motor does not start? The first thing to check is whether the spark plugs produce a spark. You can check this by removing the spark plugs and placing them in the spark plug cable. Then hold the spark plugs against the engine block and start the engine. Make sure you hold the spark plug cap, otherwise you may receive an electric shock.

Do you notice no spark? Then you can:

  • check whether fuses are broken;
  • check whether all cables are connected;
  • check that the cables are not damaged;
  • replace the spark plugs.

2 Fuel

An outboard motor will not start if the engine is not supplied with fuel. This could be due to a kink in the fuel cable, old gasoline or water in the tank, or a vacuum tank. You can squeeze the pump ball to see if fuel is going to the engine. If nothing works, it may be the fuel pump or carburetor. You will then have to clean or readjust this.

3 Air supply

And finally: your outboard motor will not start if the air supply is insufficient. If the engine is equipped with an air filter, you can check whether it is clogged or dirty. You can then clean or replace this. This will give the engine air again.

Prevent starting problems

If your outboard motor does not start, it is already too late. It is of course best to prevent starting problems instead of having to solve them. This saves you a lot of time and money. Are you going to stop using your outboard motor for a while? Then make sure that the gasoline is preserved immediately after refueling or let the engine run empty. It is also important to maintain your outboard motor every year. This prevents your outboard motor from not starting.

Outboard motor maintenance

If you have a (second-hand) outboard motor, it is inevitable that the motor will need maintenance from time to time. Consider replacements, cleaning and repairs of the outboard motor. Periodic maintenance of the outboard motor is important to keep the motor running properly. This prevents your outboard motor from starting.

At Outboard Occasions you can have maintenance and repairs carried out on your outboard motor. We check your outboard motor at various points during both minor and major maintenance. You can read more information about maintenance at Outboard Occasions on our maintenance and repairs page.

More news & tips

How to transport an outboard motor


Frequently asked questions

Here you will find answers to common questions. Is your question not listed? Please feel free to contact us. We are happy to help you.

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  • Starting the outboard motor without water
    Would you like to test your outboard motor? Under no circumstances should you start your outboard motor without water. Your engine may overheat. Flush your engine using a flush clamp and a garden hose or place your engine in a large water tank. Turn off your outboard motor immediately if no cooling water comes out.
  • 4 stroke outboard motor does not start
    Does your 4-stroke outboard motor not start? Then check yourself for three things: fuel, air and spark. Check whether the deadman cable is properly connected, whether the spark plugs produce a spark, whether there is enough fuel and whether the air supply from the filter is sufficient.
  • Outboard motor does not start after winter
    If you have not used your outboard motor for a long time, there is a good chance that the motor will not start. An important cause is the fuel still present in the engine. This causes blockage in the carburetor. So remove the fuel from the engine after the sailing season. Also replace your tail oil.
  • Outboard motor does not start electrically
    Do you have an electrical system and your outboard motor does not start? The starter motor or battery may be broken. More causes why your electric outboard motor will not start are a corroded main fuse, a ground lock or electrical connections that are not clean or poorly connected wiring.
  • Yamaha outboard motor does not start
    Does your Yamaha outboard motor not start? Then check a number of things yourself. Check whether the deadman cable is properly connected, whether the spark plugs are producing a spark, whether the engine is getting fuel and whether the air supply filter is not dirty.
  • Starting the outboard motor after winter
    If your outboard motor has not been used for a long time, it is important that you check whether it still starts properly after the winter. If this is not the case, it may be due to old gasoline. Replace old gasoline with clean gasoline and replace your tail oil.