The Ultimate Guide To Kawasaki FX801V Problems: Solution & Maintenance

Kawasaki is a renowned name in the world of outdoor power equipment, known for its high-quality engines that power a wide range of products, from lawnmowers to generators.

However, even the most reliable and reputable brands can face product issues, and Kawasaki is no exception. One of the most common problems that users with Kawasaki engines have reported is the FX801V model.

This engine, commonly used in commercial lawnmowers, has been the subject of numerous complaints due to its performance and reliability issues. As professionals in the industry, it is important to understand the root causes of these problems and how we can address them. Here, we will delve into the common Kawasaki FX801V Problems associated with the Kawasaki FX801V engine, their possible causes, and potential solutions.

Kawasaki FX801V Problems

A Brief Overview Of Kawasaki Fx801v

A Brief Overview Of Kawasaki Fx801v

The Kawasaki FX801V is a powerful engine model common in lawn mowers and utility vehicles. Known for its reliability and performance, this engine has a carburetor that ensures optimal fuel and air mixture for efficient combustion. However, like any engine, it may encounter carburetor issues such as clogging or fuel line problems.

Regular maintenance, including checking and changing engine oil, is crucial to keep it running smoothly. In case of a broken fuel pump, it is necessary to replace it promptly to avoid further damage. Kawasaki Motors is popular for producing quality lawn mower engines, and the FX801V is no exception.

Here is an informative table providing a brief overview of the Kawasaki FX801V engine:

Model Kawasaki FX801V
Type 4-stroke, air-cooled, V-twin engine
Displacement 852 cc
Horsepower 24-horsepower motor
Fuel Type Volumes of fuel- Gasoline
Cooling System Air-cooled
Starting System Electric start (4-cycle motors)
Fuel Capacity 15.1 liters (4 gallons)
Lubrication Full-pressure lubrication with oil filter
Weight 52 kg (114.6 lbs)
Application Ideal for commercial and industrial use

Kawasaki FX801V Problems And Solutions

Kawasaki FX801V Problems And Solutions

The Kawasaki FX801V is a powerful engine commonly used in various applications, such as lawn mowers and small construction equipment. The Kawasaki FX801V engine is popular for its reliability and performance in various applications, but like any piece of machinery, it may encounter problems over time.

One common issue that some users have reported is difficulty starting the engine. To resolve this problem, it is recommended to check the ignition switch for any signs of wear or damage and replace it if necessary. Here are detailed discussions below on Kawasaki FX801V problems and solutions:

Engine Issues

Engine Issues

One common problem with the Kawasaki FX801V engine is air filter issues. If the air filter becomes clogged or dirty, it can restrict airflow and cause the engine to run poorly. Regularly cleaning or replacing the air filter can help prevent this issue.

You can resolve another potential problem by replacing the battery in case of battery failure. Cylinder leaks are another concern that may require professional attention to fix. It’s important to note that warranties may cover some of these repairs, so checking your warranty coverage is recommended.

Oil Leakage

If you are experiencing oil leakage with your Kawasaki FX801V engine, it is important to seek professional advice from an HP engine expert. Various factors, including worn or damaged seals, gaskets, or O-rings, can cause oil leakage.

One common issue that may cause oil leakage is a faulty spring in the oil filter. To address this problem, we recommend replacing the spring and ensuring that the oil filter is properly installed and tightened. Regular maintenance and inspection of your FX801V engine can help prevent oil leakage and other potential issues.

Spark Plug Problems

Spark plug problems can occur in Kawasaki FX801V mower engines, causing issues such as misfiring or difficulty starting. To solve these problems, first, check the spark plug for signs of wear or damage. If necessary, replace the spark plug with a compatible one.

Additionally, it is important to ensure that the engine is properly maintained and tuned to optimize fuel efficiency and performance. If the problem persists, it may be best to consult an engine specialist who can diagnose and address any underlying issues with the fuel injectors or fuel delivery system.

Engine Heating Issues

Engine Heating Issues

Another common problem that Kawasaki FX801V engines may experience is overheating. Various factors, including a lack of proper maintenance or a faulty anti-tilt switch can cause this. If you are experiencing engine heating issues with your Kawasaki FX801V engine, consulting with a mechanic who specializes in LaGrange Small Engine repair is important.

They will be able to diagnose the problem and provide the appropriate solutions, such as replacing the faulty switch or conducting necessary repairs to prevent further loss of power.

Fuel System Problems

Fuel-related problems can occur with the Kawasaki FX801V engine, particularly in cold weather. One common issue is a clogged fuel filter, which can impede fuel flow to the engine. A faulty ground wire connection can cause electrical issues and affect fuel delivery.

A cracked or damaged intake manifold can also lead to air leaks and disrupt the fuel-air mixture. To address these issues, it is important to regularly inspect and clean the fuel electrical systems components, ensure proper grounding connections, and replace any damaged parts as needed.

Carburetor Problem

Another potential problem with the Kawasaki FX801V engine is carburettor issues. If the carburetor is not functioning properly, it can lead to poor performance and potential damage to the engine. Some solutions for this problem include cleaning or replacing the carburetor, ensuring proper fuel flow, and checking for any clogs or blockages in the fuel system.

It is also important to check the mower’s electrical connections, as a faulty connection can affect the carburetor’s performance. Regular maintenance and inspections can help prevent and address carburettor problems in the 852cc engine.

Starting And Ignition

Another common problem with the Kawasaki FX801V engine is difficulty starting and ignition issues. Various factors, including a faulty ignition coil, spark plug, or starter motor, can cause this. To troubleshoot this issue, start by checking the spark plug for signs of damage or wear and replace it if necessary.

Next, inspect the ignition coil for any cracks or breaks and replace if needed. If the problem persists, it may be necessary to have a professional technician diagnose and repair the issue.

Cooling System Problems

Cooling System Problems

A common problem with the Kawasaki FX801V engine is cooling system issues. Some users have reported that the engine tends to overheat, especially during startup or when operating in hot weather conditions.

This issue can be challenging, but there are a few potential solutions. First, ensure the engine’s cooling fins are clean and free from debris obstructing airflow. Check the coolant level and make sure it is at the proper level. If these steps do not resolve the issue, consulting a professional mechanic for repair may be necessary.

Kawasaki Fx801v Charging Problems

Kawasaki Fx801v Charging Problems

The Kawasaki FX801V engine has been known to experience various issues, including carburetor difficulties and carb holes. Additionally, some users have reported auto-choke lawnmower problems. It is important to follow basic maintenance advice and adhere to the 50-hour mark service intervals to prevent these issues.

Another common problem is charging problems, which can be resolved by checking the charging system and ensuring proper connections. Lastly, being aware of the anti-tilt switches and their role in preventing accidents and maintaining optimal engine performance is crucial. By addressing these problems and implementing the necessary solutions, the Kawasaki FX801V engine can operate smoothly and efficiently.


The Kawasaki FX801V engine is a powerful and reliable option for various applications. However, like any engine, it may encounter a few engine challenges. One common issue with the current engine is the difficulties it experiences during startup.

This can be addressed by ensuring proper maintenance, such as regular oil changes and spark plug replacements. Following the manufacturer’s guidelines for fuel and air filter maintenance is important. By taking these proactive measures, you can minimize potential Kawasaki FX801V Problems and ensure optimal performance from your Kawasaki FX801V engine.


What Hp Is A Kawasaki Fx801v?

The Kawasaki FX801V is a powerful 26-horsepower (HP) engine designed to deliver reliable performance in various applications.

What Is The Problem With The Kawasaki Ft730v Efi Engine?

The Kawasaki FT730V EFI engine has been popular to have issues with fuel injection and starting problems. Consult a Kawasaki dealer or mechanic for more specific information and potential solutions.

Is Kawasaki A Good Engine?

Yes, people generally consider Kawasaki engines to be good quality and reliable. They are handy in various applications, such as lawnmowers, generators, and small vehicles.

What Is The Difference Between A Kawasaki Fs And Fx Engine?

The main difference between a Kawasaki FS and an FX engine is the design and intended use. The FS series engines are typically handy for residential or light commercial applications, while the FX series engines have specific designs for heavy-duty commercial use.

What Is The Problem With Efi Engine?

There isn’t necessarily a problem with EFI (Electronic Fuel Injection) engines. EFI engines offer several advantages over carbureted engines, including improved fuel efficiency, better throttle response, and reduced emissions.

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