Kawasaki FR651v Problems How To Fix Them: Kawasaki Lawnmower Engine

Kawasaki has built quite a reputation for producing powerful and efficient motorcycles loved by riders worldwide. However, like any other manufacturer, they have faced their fair share of product issues.

One of the most common problems that Kawasaki FR651v owners commonly need is better reliability. When buying a new vehicle, it is vital to assess its performance and durability. The Kawasaki FR651V is popular among buyers due to its reliability and performance.

The maintenance and repair of the car are essential to ensure that it functions properly for years. The Kawasaki FR651v is popular for its power and durability but can have its share of problems, like any other machine. We will tell you everything about it, from the most common Kawasaki FR651v problems to how to fix them.

Kawasaki FR651v Problems How To Fix Them

What Are The Symptoms Of Kawasaki FR651v Problems?

Several symptoms may indicate Kawasaki-FR651v problems. Suppose you experience any of these symptoms with your Kawasaki FR651v engine. In that case, should it be inspected and repaired by a qualified technician to prevent further damage and ensure optimal performance? Here are some common signs to watch out for:

  • Engine misfires or runs rough
  • Difficulty starting the engine
  • Decreased power or performance
  • Excessive smoke from the exhaust
  • Overheating of the engine

5 Common Kawasaki FR651v Problems & How To Fix Them

5 Common Kawasaki FR651v Problems & How To Fix Them

The Kawasaki FR651V can have some common issues that can hinder its performance. One of the most common problems is slow speed, which various factors can cause. You can fix the problem by making modifications to the mower.

Low spark can also be an issue, as fuel line blockages, charging system failure, and low compression. Poor Fuel Pump economy can also be a frustrating problem with this model. Here are five common Kawasaki FR651v problems and how to fix them:

Engine Performance Issues

Kawasaki FR651v Problems & How To Fix Them

If you’re experiencing engine performance issues with your Kawasaki FR651v, it’s important to address them promptly to ensure the longevity and reliability of your equipment. Common problems include difficulty starting, loss of power, and rough running. Several potential causes exist for these issues, such as dirty air filters, clogged fuel lines, or spark plug problems.

Consult the owner’s manual or contact a professional for troubleshooting advice specific to your situation. Regular maintenance and proper care can help prevent these problems and keep your Kawasaki FR651v running smoothly.

Low Spark

Low spark in the FR651V can be caused by several things that prevent coil voltage from crossing the electrode gap at the spark plug’s tip. These include damaged, worn, or fouled current spark plug, faulty hot wire, and a broken distributor cover.

Excessive dry deposits or electrode wear may point to a problem with the fuel-to-air ratio in the combustion chamber. Thick coatings of black carbon deposits on the engine could mean the carburetor mixture is too rich, leading to spark loss. Check these components to identify and fix the root cause of your low spark problem.

You can fix fuel line blockage by cleaning the fuel filter and replacing the fuel lines. For low Compression loss, check the valves and piston rings and replace them if necessary. You can fix overheating by changing the oil, adding an oil cooler, and replacing the fan belt.

Charging System Failure

One of the most common problems associated with the Kawasaki FR651V mower is the charging system failure. This issue often results from slack or dirty/damaged connections, preventing the battery from charging. If the ignition key is left in the on position, it may also cause the bad battery to keep discharging, resulting in a complete drain.

Fortunately, there are several ways to fix this issue. In some cases, simple modifications like cleaning or tightening connections may help. If the problem persists, replacing damaged parts or the battery may be necessary.

It’s also worth noting that the FR691V model has a fuel flow tank shut-off fuel solenoid on the carburetor that can cause issues, although common repair techniques can usually remedy this. By taking these steps, it is possible to solve charging system problems and extend the lifetime of your Kawasaki FR651V mower.

Fuel Line Blockage

Fuel Line Blockage

Several issues can cause a Kawasaki FR651v to lose power. One of the most common causes is a blockage in the fuel line, usually due to dirt or debris lodged in the filter. If you notice your Kawasaki FR651v cutting out at high speeds or losing power without any apparent mechanical fault, a mechanic must check the fuel system immediately.

A blocked fuel line can cause many issues, including poor fuel economy, sluggish acceleration and stalling, and reduced power output. If left unattended, these issues can quickly become more severe and even result in an accident. Only some problems with your Kawasaki FR651v are necessarily serious issues, but taking it to a mechanic for an annual tune-up or basic maintenance should be strongly considered.

Low Compression

Low Compression

If your Kawasaki FR651V engine is experiencing low compression, it could be due to various reasons, including age and prolonged mower use. The FR651V engine is a 23 horsepower OHV motor with 651ccs of displacement, 43.7 Nm of torque and a maximum power of 3,600RPM. It has electronic spark ignition and a fuel shut-off solenoid on the carburetor.

Low compression can cause poor engine performance and decreased fuel economy. To resolve this issue, consider performing a compression test and inspecting the engine for any signs of wear or damage. Replace any worn components or seek professional assistance to ensure your FR651V engine operates optimally.


Overheating is a common problem that can occur with the Kawasaki FR651v engine. This can be caused by various factors, including a lack of proper maintenance, operating the engine in high temperatures for extended periods, or a malfunctioning cooling system. When the engine overheats, it can lead to decreased performance, increased fuel consumption, and potential damage to the engine components.

To prevent overheating, it is important to regularly check and clean the cooling fins on the engine, ensure proper airflow around the engine during operation, and monitor coolant levels. If you are experiencing persistent overheating issues, consult a professional for further diagnosis and repair.

Which Motor Is Better, Kohler Or Kawasaki?

Which Motor Is Better, Kohler Or Kawasaki

When choosing between Kohler and Kawasaki motors for your Kawasaki FR651v, it ultimately depends on your specific needs and preferences. Both manufacturers are well-known in the industry and offer quality online products.

Kohler engines are popular for their durability and reliability, making them popular among many users. On the other hand, Kawasaki engines are often praised for their smooth performance and power.

Do thorough research, read reviews, and consult with professionals to determine which motor best suits your particular requirements. The Cub Cadet engine has multiple cylinders with a reliable cylinder head secured by sturdy bolts, making it a great choice for performance.


Dealing with Kawasaki FR651v problems can be frustrating, but most issues can be resolved with a little troubleshooting. By identifying the common problems and understanding how to fix them, you can ensure that your Kawasaki FR651v engine runs smoothly and efficiently.

Whether it’s a fuel-related issue or a problem with the ignition system, taking the time to address these concerns will help prolong the life of your engine and keep it performing at its best. Consult the manufacturer’s manual for specific instructions and contact a professional. You can keep your Kawasaki FR651v running smoothly for years with proper maintenance and care.

Frequently Asked Questions

Is The Kawasaki FR651V Reliable?

Yes, the Kawasaki FR651V is generally considered to be a reliable engine. It is commonly handy in residential and commercial applications, such as lawnmowers and small tractors, and has a reputation for durability and performance.

Are Kawasaki FR Engines Good?

Yes, Kawasaki FR engines are generally considered to be good. They are popular for their durability, reliability, and performance. Kawasaki is a reputable brand that has been manufacturing engines for various applications, including lawnmowers, generators, and small vehicles, for many years.

Where Are Kawasaki FR Engines Made?

Kawasaki FR engines proudly come in the United States. With a commitment to quality and craftsmanship, Kawasaki has established manufacturing facilities in Maryville, Missouri.

Which Country Made Kawasaki Motor?

Kawasaki motorcycles come from Japan. Japan has a rich history of manufacturing high-quality motorcycles, and Kawasaki is one of the leading brands in the industry.

Is Kawasaki And Yamaha Same?

No, Kawasaki and Yamaha are not the same. They are two separate motorcycle manufacturers based in Japan. While both companies produce motorcycles and other power sports products, they have different models, designs, and brand identities.

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