mercury 60 hp 4 stroke problems

Mercury 60 Hp 4 Stroke Problems: 4 Issues and Solutions!


Mercury 60 Hp 4 stroke is a reliable outboard motor. However, it does face some problems which are frustrating.

So, how can you fix Mercury 60 Hp 4 stroke problems?

Mercury 60 hp 4 stroke can face fuel problems. Using a high-quality 10-micron separator can solve the issue. Another problem it faces is carburetor buildup. You need to use a fuel stabilizer for the carburetor to diminish the issue. Also, the motor can get overheated. Cleaning the mud will solve it.

These are just the tip of the iceberg. I will assist you in detail to find a suitable solution for each problem.

So, hop on the wagon and buckle up for an interesting article!

4 Common Issues with Mercury 60 Hp 4 Stroke

Mercury is one of the most popular manufacturers of outboard motors. But, still, the Mercury motors can face several issues. For instance, Mercury motor’s voltage regulator issues are common.

So, it’s quite common that Mercury 60 Hp 4 stroke motor issues can arise. So, let’s see some common issues with it.

Problem 1 of 4: Fuel Issues

Mercury uses octane, which is ethanol-blended fuel. This fuel system can cause issues like losing power.

The issue can be severe in the middle of the cruise. However, the problem is very common in any ethanol-based fuel system.

Problem 2 of 4: Carburetor Issues

The carburetor in the Mercury 60 HP 4 stroke motor is prone to build-up. As the gas burns, a build-up occurs inside the carburetor. As a result, the amount of fuel available to the motor gets restricted.

For that reason, your mercury 60 Hp 4 stroke can cause an engine to misfire.

Problem 3 of 4: Overheating Issue

Just like any outboard motor, Mercury 60 Hp 4 stroke motor doesn’t have a radiator. It cools with the water the boat is on.

However, it sometimes causes to overheat. If that happens, the engine will lose power or speed gets deteriorate.

Problem 4 of 4: Boat Becomes Slow But Consumes Excessive Fuel

Mercury 60 Hp 4 stroke motor is reliable for fuel economy and speed. However, after a few whiles, you may notice the boat is consuming too much. But, it moves slowly on the water. 

This problem is very irritating as you cannot enjoy a boat ride to the fullest. The issue also leads to excessive usage of fuel.

These are the Mercury 60 Hp 4 stroke issues. Don’t worry because in the next section I will troubleshoot each problem. 

So, let’s move on.

Troubleshooting Mercury 60 Hp 4 Stroke Problems

This is the section where I will thoroughly guide you to solutions. Other Mercury motors like problems with Mercury Optimax 225 Hp can also occur. So, hold on there to solve every problem with Mercury 60 Hp 4 stroke.

Troubleshooting 1 of 4: Fuel Issues

As mentioned before, Mercury 60 Hp 4 stroke uses ethanol-based fuel. Fuel issues can lead to more severe problems.

The main reason why this happens is that fuel gets mixed with water. It makes the fuel go bad and causes the engine to lose power frequently.

Another reason is using the wrong fuel type.

Let’s see the possible fixes for the problem.


Firstly, check if the fuel and water separator is worn out or not. You need to use a high-quality 10-micron separator for better and long-lasting results. Hence, some of the best compatible Mercury 60 Hp 4 stroke fuel separators are given below.

VEDURME Fuel Water Separator Filter 10 Micron Replacement View More Details on Amazon
iFJF Fuel Water Separator Kit 10 Micron View More Details on Amazon
CARMOCAR Fuel Filter Water Separator replacement View More Details on Amazon

Secondly, always use octane, unleaded 91 RON. That’s the recommended Mercury 60 Hp 4 stroke fuel consumption type by the manufacturer.

Lastly, use fuel stabilizers once a month for preventing such issues.

Troubleshooting 2 of 4: Carburetor Issues

Carburetor buildup is a very common issue. It can happen due to various reasons.

The first reason is not using the boat enough. It jams the carburetor or corrodes the inside.

Secondly, not using a fuel stabilizer can cause the issue.

Lastly, dirt and debris can cause the issue. 


First of all, you should use the boat once every week. At least start the motor and keep it running for about 5-10 minutes.

Secondly, you need to use a fuel stabilizer. It can remove any clog from the carburetor and avoids buildup.

Lastly, you must clean the carburetor if it has dirt. To clean the carburetor, mix the cleaner with a full tank of gasoline. Then, after a little period of operation, examine the outcome.

Troubleshooting 3 of 4: Overheating Issue

Motor getting overheated is a major issue. Your motor will run inefficiently due to it. 

Usually, Mercury 60 Hp 4 stroke motor overheating occurs when the intake is blocked. It happens due to mud or debris.


To avert the situation, you need to clean the mud and debris from the intake. It’s better to use a wired brush to clean it thoroughly.

Also, in winter if your motor isn’t winterized it will overheat. So, you need to winterize Mercury 60 Hp 4 stroke motor.

Troubleshooting 4 of 4: Boat Becomes Slow but Consumes Excessive Fuel

If a boat moves slowly but consumes excessive fuel, it happens because of the propeller.

Mercury 60 Hp 4 stroke propeller can either be broken or full of mud. Hence, the boat isn’t moving as fast as usual.


First check the Mercury 60 Hp 4 stroke’s shear pin. If that’s broken, you need to replace the pin.

Secondly, check the whole propeller. If the propeller is broken, you need to change the whole propeller.

Lastly, clean if there’s any mud or debris on the propeller. That way, you can fix the unwanted issue.

That’s all regarding troubleshooting  Mercury 60 Hp 4 stroke’s problem. Hopefully, the guide will properly assist you in eliminating each problem.


There’s a saying “prevention is better than treatment.” This is also applicable for your Mercury 60 Hp 4 stroke motor.

Let’s see some of the tips.

Investigate the Fuel Line Monthly

You should check the fuel line monthly. Check out for cracks or worn-out parts. Also, replace any parts that are worn.

Lubricate The Boat Steering Annually

Boat steering directly controls the propeller. So, you should lubricate it using grease. Otherwise, the in-take line can get broken.

Checkout for The Propeller For Dents

If your propeller has dents, the boat won’t sail efficiently. So, check out for dents on the propeller and take immediate steps if it’s worn.


What’s The Top Speed of Mercury 60 Hp 4 Stroke Motor?

The top speed of Mercury 60 Hp 4 stroke motor is 22 mph. It reaches a high speed at an impressing 5900rpm.

What’s the Mileage of Mercury 60 Hp 4 Stroke Motor?

The mileage of Mercury 60 Hp 4 stroke motor is 18.9 l/h at 5500rpm. It’s known for its great fuel efficiency.

Can You Dry-Start Mercury 60 Hp 4 Stroke Motor?

No, dry-starting a Mercury 60 HP 4 stroke motor is not suggested. It has the capacity to dry the turbine of a water pump. You might get away with it once if you switch on the starting motor without turning on the engine. So, don’t try to dry-start Mercury 60 Hp 4 stroke motor.


That’s all about the Mercury 60 Hp 4 stroke problems. 

Here’s a tip, against the tide keep the boat at low speed. That way you can keep the boat stable.

Have a great day!

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