7 Handy Fixes When Yamaha Outboard Tachometer Not Working

yamaha outboard tachometer not working
yamaha outboard tachometer not working

Yamaha is a Japanese brand known worldwide for motorsports and for manufacturing some of the best engines used in motorcycles, sports bikes, boats, and outboards.

The company started in 1955 and has gained popularity worldwide due to extreme performance, better durability, and certainly the best features you don’t get on any other engines out there.

Yet, you might also have to face some problems with the engines that you will need to be careful about.

Yamaha outboards are the perfect thing you can get for performance, durability, and endurance simultaneously, and you will enjoy seamless working with them.

However, if the Tachometer is not working on the Yamaha outboard, that can be a real problem for you. A few things that you will need to make it work with the outboard are:

Yamaha Outboard Tachometer Not Working

  1. Configure it Right

You will need to start configuring the Tachometer with the outboard power and get a screw below it that you will need to tighten or lose to have it configured perfectly.

If the screw is not tightened up properly or is loose, you will not be getting the Tachometer to have an accurate reading, or it might not be working.

That is why you must ensure that you get the configuration perfectly done. If you need to improve,

you must consult the Yamaha dealership. They will be able to ensure that you are getting perfection on the calibration of the Tachometer. It should start working accurately for you without causing you any such problems with the Tachometer again.

  1. Check the Cable

The next thing that you will need to check on the Tachometer is the cable. Some advanced outboards get the ECU-controlled tachometers, yet some older models use a cable to control the Tachometer.


That cable can get stuck at some point or even break, and that should be causing you to face the problem of the Tachometer not working.

It will help if you lubricate the cable by using motor oil and moving it a few times. That should help you out properly, and you can make the cable work properly without facing such issues.

However, if the cable is not moving, it might be broken at some point, and you will need to replace the tachometer cable to make it work for the optimal experience with your Tachometer.

You must be mindful that you need to get it fixed properly with an authorized Yamaha Dealership, which should be the best thing to help you without facing any other problems.

  1. Fix the Pickup Mechanism

Several factors may affect the operation of your outboard tachometer. One possible cause is the failure to accurately measure engine speed due to a problem with its pickup mechanism.

This can be remedied by checking if the tach cable has been properly connected or replacing the sensor altogether.

Another common issue is when the Tachometer reads low due to faulty wiring. You can check the connections or replace a broken wire when this happens.

connection broken

 If none of these fixes work for your outboard tachometer, it may be necessary to seek professional help to identify and troubleshoot the problem.

If you don’t fix these problems right away, the engine may get overworked and experience other issues in the process.

  1. Replace the Fuel Pump

When the engine is not starting, you should check if it has enough fuel. If the tank is full, inspect the fuel pump and replace it if necessary. You can remove it from its housing and clean it thoroughly with a wire brush.

First, to replace the fuel pump, ensure it’s faulty by testing it with a multimeter.

If the pump works, check for any blockages in the fuel line and replace them if necessary. To begin replacing, start with the fuel line, the pump, and finally, the housing.


If you are having trouble with your Yamaha outboard tachometer not working, there may be several possible causes. Check the fuel pump, which is often the culprit when an engine will not start or stall frequently.

First, to replace the fuel pump, ensure it is fully functional by testing it with a multimeter. If the pump works, check for any blockages in the fuel line and replace them if necessary.

You should also check the drive belt, as a damaged or worn belt can prevent your Tachometer from functioning properly.

  1. Check The Drive Belt

Another potential issue that could be causing your Yamaha outboard tachometer not to work is a damaged drive belt. To check for this, you must disconnect the Tachometer from the engine and take off the cover.


Once you have removed the cover, inspect the belt for any signs of damage or wear. If there are any issues, you will need to replace the belt. To do this, remove the old belt and put on a new one.

Ensure the replacement is properly aligned before reattaching it to your engine.

  1. Inspect The Spark Plugs

Check the spark plugs if your Yamaha outboard tachometer is still not working after performing these fixes. A faulty or worn-out spark plug can prevent your engine from starting properly, which could also affect your Tachometer.

To inspect the plugs, remove them from the engine and look closely for any signs of damage or wear. You can also test them with a multimeter.

  1. Get the Tachometer Fixed

Lastly, the Tachometer on your Yamaha Outboard might have some stuck gear inside it or be broken, which you will need help to figure out.

If the Tachometer is mechanical, you will have to get it checked for any such problems.

The Yamaha dealership will be able to ensure that you are getting the problem sorted out correctly with the appropriate repair or replacement.

This might be needed to ensure that you can have the perfect experience with the Tachometer on your outboard.

However, if the Tachometer is not mechanical and you have a digital tachometer that works with the ECU, you will need to check the fuses properly and ensure that none are blown.

After that, you will need to check on the calibration with the ECU and have it programmed to get the perfect experience with the Tachometer.

That should help you correctly get the Tachometer to work again with the Yamaha outboard. The ECU needs to be perfectly calibrated.

With that, it should also have to properly get the current without any short-circuiting or wires getting broken down that can get the current to Tachometer right, and it will work perfectly fine for you.

How to prevent Yamaha Outboard Tachometer from Not Working?

The Yamaha Outboard Tachometer can be used on any outboard motor. The Tachometer is used to measure the speed of the engine. It’s an important gauge in operating and maintaining your boat motor, which you should use to ensure it runs at peak performance.

However, if it stops working, ther are some steps you can take to troubleshoot and fix the issue.

One common problem that can cause a Yamaha Outboard Tachometer to stop working is worn or damaged electrical wiring connected to the Tachometer.

To troubleshoot this issue, check the electrical wires and connectors for signs of damage or corrosion, and replace any damaged or corroded parts. Also, check the connections on the Tachometer itself and ensure they are secure and properly connected.

Another potential issue that can cause a Yamaha Outboard Tachometer to stop working is mechanical problems in the engine.

This can happen if the engine is clogged with dirt and debris or if there is a mechanical issue with the engine’s spinning system. You will need to take your boat motor in for servicing and repair to get the Tachometer working again.

To prevent these issues from occurring and keep your Yamaha Outboard Tachometer running smoothly, it’s important to maintain the engine and keep it clean.

This can involve regular cleaning and oiling of the engine and making sure that all parts are in good working order.

Additionally, you should always check the Tachometer for any signs of damage or wear before taking your boat out for a ride so that you can address any potential issues right away.

With regular maintenance and care, your Yamaha Outboard Tachometer should continue to work reliably for many years.

Leave a Comment