5 Most Common Kawasaki FX751V Problems with Fixes

The Kawasaki FX751V is a reliable and powerful V-twin engine commonly used in various gardening tractors and commercial mowers. With a displacement of 726cc, it delivers smooth and consistent power to tackle heavy-duty tasks.

This engine boasts excellent fuel efficiency and low emissions, making it an eco-friendly choice for farmers and lawn care professionals alike.

It’s designed to be durable, providing long-lasting performance to handle the demands of tough agricultural tasks.

Now, let’s dive into the problems I’ve encountered with the Kawasaki FX751V and the solutions I’ve discovered along the way.

Remember, as a farmer, I always prefer a hands-on approach, so I’ll be providing DIY solutions for those who love to tinker, as well as suggestions for when it’s best to seek professional help.

5 Common Kawasaki FX751V Problems with Fixes

Problem 1: Difficulty in Starting the Engine

Start by checking the battery and connections. Ensure they are clean and free of corrosion. If the battery is old and weak, consider replacing it.

Next, inspect the fuel lines and filter for blockages. If you find any, clean or replace them. Finally, examine the spark plugs and replace them if necessary. Proper maintenance and cleaning can often resolve starting issues.

Professional Solution: If you’ve checked everything and the engine still won’t start, it might be time to call in a professional mechanic. They can diagnose the problem using specialized tools and equipment, saving you time and effort.

The cost of hiring a professional mechanic can vary depending on your location and the complexity of the issue, but it’s usually worth it to get your tractor up and running smoothly.

Problem 2: Engine Overheating

The first step is to check the cooling system. Make sure the radiator and cooling fins are clean and free from debris. Also, check the coolant level and top up if needed.

Additionally, ensure that the engine’s air intake is not obstructed, as proper airflow is crucial for cooling. Keep your tractor’s hood and panels free from dirt and mud to maintain optimal airflow.

Professional Solution: If the engine continues to overheat after checking the cooling system, it’s time to involve a professional.

Overheating can be caused by more complex issues, such as a faulty water pump, thermostat, or even internal engine problems.

An experienced mechanic will be able to diagnose the root cause and perform the necessary repairs. The cost of professional repairs can vary depending on the specific issue.

Problem 3: Uneven Cutting Performance

When you notice your tractor isn’t cutting the grass evenly, the first thing to do is inspect the mower deck. Make sure it’s level and balanced. If not, adjust the deck accordingly.

Dull blades can also cause uneven cutting, so sharpen or replace them as needed. Regularly cleaning the deck and removing grass clippings will also contribute to a more even cut.

Professional Solution: If the DIY solutions haven’t improved the cutting performance, it’s time to bring in a professional.

They can thoroughly inspect the tractor and deck, checking for any structural issues or mechanical problems that might be causing the uneven cut. A skilled technician will ensure your tractor mows perfectly again.

Problem 4: Loss of Power

When your tractor experiences a loss of power, start by checking the air filter and cleaning or replacing it if necessary. A clogged air filter can restrict airflow, leading to reduced engine performance.

Next, inspect the fuel filter and lines for blockages or contaminants. If you find any issues, clean or replace them. Finally, check the spark plugs for signs of wear and replace them if needed.

Professional Solution: If you’ve followed the DIY steps and the power loss persists, it’s time to get a professional’s help.

Loss of power can stem from various issues, including carburetor problems, fuel injector issues, or internal engine wear.

A qualified mechanic will diagnose the root cause and perform the necessary repairs to restore your tractor’s power.

Problem 5: Excessive Vibration

Excessive vibration can be caused by a few factors. First, check the engine and transmission mounting bolts to ensure they are properly tightened.

Next, inspect the blades and spindle assemblies for damage or imbalance. If you notice any issues, replace the damaged parts and balance the blades.

Additionally, make sure the tires are properly inflated, as uneven tire pressure can contribute to vibration.

Professional Solution: If the DIY solutions don’t alleviate the vibration, it’s time to consult a professional mechanic.

They have the expertise to pinpoint the root cause of the excessive vibration, whether it’s related to engine problems, transmission issues, or other mechanical faults.

Letting a pro handle this can save you from potential safety hazards and ensure a smoother ride.

Costing for Hiring Professionals: The cost of hiring a professional mechanic for Kawasaki FX751V engine issues can vary widely depending on your location, the specific problem, and the mechanic’s hourly rate.

On average, expect to pay anywhere from $50 to $150 per hour for their services. Complex issues may require several hours of labor, leading to a higher overall cost.

Always inquire about the estimated cost upfront and discuss the pricing structure with the mechanic to avoid surprises.


Q1: Is the Kawasaki FX751V engine reliable overall?

A: Absolutely! The Kawasaki FX751V is a robust and dependable engine that delivers consistent power for various agricultural tasks. With proper maintenance, it can serve you well for years to come.

Q2: How often should I perform maintenance on my Kawasaki FX751V engine?

A: Regular maintenance is essential to keep your engine running smoothly. I recommend following the manufacturer’s guidelines and performing routine checks, such as changing the oil, cleaning the air filter, and inspecting spark plugs, at least once every season.

Q3: Can I use aftermarket parts for repairs on my Kawasaki FX751V?

A: While aftermarket parts might be cheaper, I advise sticking to genuine Kawasaki replacement parts for repairs. They are designed to fit perfectly and maintain the engine’s performance and longevity.

Q4: What type of fuel should I use with the Kawasaki FX751V?

A: The engine is designed to run on regular unleaded gasoline with an octane rating of 87 or higher. Avoid using ethanol-blended fuels, as they can cause engine performance issues.

Q5: How often should I sharpen the mower blades?

A: I recommend sharpening the mower blades at least once every season or more frequently if you mow a large area regularly.


Well, fellow farmers, there you have it—my real-life experiences with the Kawasaki FX751V engine and the problems I’ve encountered. As with any piece of machinery, regular maintenance is the key to avoiding major issues and ensuring a smooth farming experience.

Whether you prefer to roll up your sleeves and handle DIY solutions or seek the expertise of a professional, it’s important to keep your tractor in tip-top shape.

I hope you found this post helpful and informative. I encourage you to explore my other blog posts, where I share more about my experiences with different agricultural equipment.

Don’t forget to leave your comments and share the problems you regularly face with your own gardening tractors.

Let me know what kind of blog post you’d like to see next, and I’ll be more than happy to dive into those topics in the future.

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