Adding Tilt and Trim to an Outboard

Adding Tilt and Trim to an Outboard: [Step By Step Process]


The operation of your boat’s motor is related to tilt and trim. Before understanding tilt and trim you need to know how a boat functions. Boats should be parallel to the waterline. 

Managing the tilt system allows you to use your boat efficiently in water. You need to add or refuel tilt and trim after a certain time. 

So, what’s the way of adding tilt and trim to an outboard?

Tilt and trim are not actual components of a boat engine. But they play a crucial role to run the boat smoothly. You can add tilt and trim to an outboard with two steps. First, you keep the engine in an even position. Then remove the fill screw and put the oil inside.  

Read on to find out about adding tilt and trim to the outboard in detail. 

Tilt and Trim

If you are a beginner you need to know what tilt and trim. Understanding tilt and trim means you will have a better time when boating. It will also be simpler for you to add if you are familiar with them.

Tilt and trim are not actual components of the motor.

Let’s first know how a boat functions. Your boat should be parallel to the waterline. When your boat is parallel to the waterline it will run smoothly. With a boat that is level, you can improve speed and efficiency.

Managing the tilt and trim system allows this to happen. It also enhances overall performance and fuel efficiency. Trim refers to the angle at which your propeller shaft is positioned in relation to the boat. Click on the link to learn more about symptoms of a bad trigger output.   

You should adjust the trim. That will make the angle of your engine down. This is known as negative trim. This is referred to as negative trimming. If you do this, the bow of your boat will lower.

On the other side, you can lower your engine’s angle. This is referred to as positive trimming. As a result, your boat’s bow will raise.

Trim may do a lot more than just adjust the way the boat raises and lowers. There are three positions of the trim. 

Let’s know how they affect the boat. 

Trimming Down 

Your boat’s bow will be lowered as a result of trimming down. This is the situation you can have when a load of your boat is heavy. However, be aware that in that situation, your boat will tug to the right.

Neutral Trimming 

Lower the bow of your boat in the same way you trim down the neutral trim. The difference is that there isn’t an angle here. The propeller shaft is parallel to the waterline here. This is beneficial to fuel efficiency. 

Trimming Up 

When you trim it up it will raise the bow of your boat. It is very helpful when the boat is in shallow water. 

It will boost the boat’s speed. Your boat, however, pulls to the left as a result of the higher steering torque.

Read this to know about the mercury outboard bad stator problem. 

How to Add Tilt And Trim To An Outboard?

Step 1: The first step is to double-check if the trailer is equipped with a motor engine. Then trim until the engine of the boat is pretty much even. It shouldn’t be raised high. Because in that way the oil you have inside the trim can go low. 

Step 2: Remove the fill screw in the second step. Take a big flat head screwdriver. It will be easier for you to use a larger screwdriver. You won’t want it to be damaged. Remove the fill screw by pushing the screwdriver hard. 

After you removed the fill screw, now start to fill the oil. Fill it until you can see it is pretty much leveled off. Make sure you don’t put the screw cap back in the way that bleeds air out of it. 

Lift it all the way you could if you have a safety clip. After that, reapply the oil. Repeat this process four to five times more. You have lifted the engine and put it down about five times. Now put the screw back in.

Be careful when you do it. Make sure it’s in the appropriate spot. Tighten it using the screwdriver. Once you screw it back on, walk through to check. Lower the engine and lift it all the way back up. 

Do the process three to four times. You must ensure that the system is completely devoid of air. It’s almost ready to go at this point.  If your mercruiser tilt and trim won’t go down check this out. 

Things to Remember 

You need to keep certain things in mind when you tilt and trim. You must be aware of the timing if you want to retain adequate control. Timing means when you should trim in and out. 

If you don’t do trimming on time it will affect the boat. 

If you face a problem removing the air and see oil coming out lift the engine.   Keep the engine in that state for a while. And down it again. It will eventually allow escape out the screw hole. 


How Does Trim Tab Work on A Boat?

Trim tabs help to reduce bow rise and improve visibility. It also helps to get you on plan faster and correct listings. Trim tabs improve your boat’s performance by altering the running angle. In short, trim tabs improve efficiency.

How to Make Homemade Power Tilt And Trim?

You can make power tilt and trim at home. For this, you need the things- Metric wrenches, a Metric socket system, a Tape measure, a T square, and a Power drill. Also Mechanical light-duty actuator, 2 linear actuator light-duty mounting brackets

Is Power Tilt As Same As Power Trim?

Yes. The boat  engine’s tilt and trim controls are housed in the same part. Though the function of them is different. The tilting part of the process requires taking the outboard out of the water. On the other hand, trimming deals with short movement when the boat is underway.  


We have tried to cover all things regarding tilt and trim. Hopefully, now you know about adding tilt and trim on an outboard. 

Make sure to keep the engine even when you trim. Do the step with caution. 

You will be able to do it quickly if you follow the procedures. Best wishes.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top