Kawasaki Brute Force 300 Problems: What To Do About Them.

The Brute Force 300 is a compact, low-power, entry-level all-terrain vehicle. It’s about half the price of its sibling — the Brute Force 750 — but it’s still a pretty powerful ATV. This machine packs enough power and control to provide a beginner room to grow. Let’s look at the key features of this ATV lineup.

Kawasaki Brute Force 300 Key Features

Kawasaki’s Brute Force 300 is an adaptable all-terrain vehicle designed for those who need a powerful machine that can handle a variety of terrains and tasks. Its durability, versatility, and reliability make the vehicle ideal for outdoor enthusiasts of any skill level.

Some of its primary features include:

  • Powerful Engine: The Brute Force 300 ATV lineup features a 271cc liquid-cooled, single-cylinder, 4-stroke engine. Therefore, whether you’re moving equipment or tackling chores, the ATV will get you around easily and quickly.
  • Outstanding Carrying Performance: Equipped with great carriers rear and front, Kawasaki’s Brute Force 300 can carry up to 30kg at the rear and 20kg at the front.
  • Superior Storage Capacity: The ATV’s front storage unit is spacious enough to hold up to four 500ml bottles — a larger volume than on the Brute Force 750 4×4 EPS. The unit is also water-resistant, thanks to its rubber seal.
  • Advanced Transmission: The combination of a centrifugal clutch and CVT transmission delivers smooth control and sporty driving fun.

While the Kawasaki Brute Force 300 reviews and features might be primarily positive, this 4×4 still suffers from significant problems that might impact the riding experience.

Common Problems With The Brute Force 300 And Their Solutions

It’s natural to experience certain problems with the Brute Force 300 as time passes. These issues might seem challenging enough on their own, but without adequate knowledge of their causes and how to fix them, they could be made much worse. Explained below are the common Kawasaki Brute Force 300 problems, as well as their probable causes and solutions.

Entry Valves Problems

If you are experiencing stalling, rough idling, or hard starting with your Brute Force 300, then this is most likely caused by the intake valves. Bad intake valves and poor maintenance by the owner can cause this ATV to display any of the symptoms above. The Brute Force 300 intake valves are often affected by debris or dirt that gets into its engine.

Possible Solution

The most effective solution to this problem is to clean the engine’s air filter after every 10 hours of driving, as the instruction manual recommends. Failure to comply with this will result in the intake valves wearing over time, causing the problems above and compression loss.

Furthermore, changing the intake valves every 1 or 2 years can also prevent the problem. If you notice the valves are causing problems, consider running a leak-down or compression test to help pinpoint the issue.

Carburetor Issues

The carburetor’s primary role is to mix fuel and air to enable your ATV to function correctly. However, any issue with the carburetor can negatively affect the engine’s performance. Here are the indications of the Brute Force 300’s carburetor problems:

  • Hesitation or lack of power, particularly under a load.
  • Exhaust emitting black smoke.
  • Decreased engine performance.
  • Poor acceleration.
  • The engine can’t start.
  • Overheating engine.

If you notice any of these symptoms signify a problem with your Brute Force 300’s carburetor.

Possible Solution

Begin by inspecting the carburetor visually for any indication of wear or damage. Look for damaged or loose connections, leaks, or cracks. Afterward, consider cleaning the carburetor because a clogged or dirty carburetor will lead to the problems listed above. To do this, you have to remove the carburetor from the ATV and clean it properly while paying attention, particularly to the tiny jets and ports. Once done, ensure you reassemble the carburetor properly.

However, if cleaning and reassembling the carburetor doesn’t resolve the issue, you may have to replace certain items. The carburetor might need a new float, needle valve, or gasket. Additionally, it’s critical you use original Kawasaki components to guarantee a proper fit.

Transmission Issues

Another major issue with this ATV lineup is with its transmission. The Kawasaki Brute Force 300 transmission problems cause the vehicle to shift out of gear, annoying grinding sound when shifting gears, hesitation while accelerating, or the gear shift sticking. These are all potential indications that either the engine mount bolts need to be re-tightened or the shift linkage requires an adjustment. If you experience transmission issues with your Brute Force 300, take these steps to resolve this problem.

Possible Solution

Start by inspecting the transmission fluid level. Your ATV can have transmission issues if the transmission fluid is either low or dirty. Afterward, you should also consider checking for any signs of leakages from the transmission.

Additionally, if the clutch isn’t disengaging or engaging correctly, it might result in transmission issues. Therefore, you also have to examine the clutch cable adjustment and readjust it if needed. A clogged or dirty transmission filter can also cause transmission problems. So, cleaning or replacing a dirty or faulty filter is critical.

Fuel Pump Problems

If you spot a decrease in acceleration and speed, hard starts, or idling problems in your Brute Force 300, it could indicate that the fuel pump is faulty. However, it’s important to note that a faulty fuel pump is not a common problem with the Brute Force 300. In most cases, a clogged or dirty fuel filter is to blame.

When the fuel is contaminated with debris or impurities, it can gather in the ATV’s fuel filter and clog it. This will result in a low fuel supply to the fuel pump, causing cooling of the drive motor of the pump and insufficient lubrication. Therefore, a clogged fuel filter can cause both your quad’s fuel pump and drive motor to fail.

Possible Solution

In the case of a clogged fuel filter, you have to clean or replace it. Furthermore, to prevent your fuel filter from getting clogged, consider cleaning it occasionally. If cleaning or replacing the fuel filter doesn’t resolve the problem, examine the fuel pump relay for indications of deterioration or corrosion.

The fuel pump issues you are experiencing could be due to damage to the relay. Replace the fuel pump relay if you notice any wear or corrosion.

To determine what’s causing the fuel pump problem, you could perform a simple test to determine if your pump is still functional. Begin by disconnecting the hose and turning the Brute Force 300 on to find out if the fuel spills out. If fuel spills out, then the fuel pump is still functional. However, if no fuel spills out, and you’ve ruled out the fuel pump relay and fuel filter, there’s a high chance that the fuel pump must be replaced.

Engine Issues

The Brute Force 300 can also suffer from several engine problems. Some of the signs that might indicate a problem with your engine include:

  • The engine stops abruptly.
  • The engine can’t start.
  • Unusual engine sounds.
  • Oil leaking.
  • Excessive exhaust smoke.
  • Oil leaking.

Unusual engine sounds and overheating are the most common engine issues and they are often caused by damaged or worn-out engine components. Misuse, regular usage, and lack of maintenance to engine components, such as valve seals, rings, and bearings, will wear down engine components. This will result in loss of engine power.

Low coolant levels will cause the engine to overheat. Therefore, it’s important to always keep the coolant levels high. While a damaged battery or loose electrical connections will cause engine problems such as stalling and difficulty in starting.

Possible Solution

In the case of unusual engine sounds and overheating, replacing damaged or worn-out engine components, such as valve seals, rings, and bearings, is key to restoring optimal engine function. Additionally, ensure you regularly clean these components to prevent vital engine components from quickly wearing out.

For overheating caused by low coolant levels, check and refill the coolant regularly to prevent the problem from recurring. For stalling, difficult starting, and power loss, you can fix these problems by ensuring the battery is adequately charged, replacing the faulty battery, or tightening any loose connections.


Regardless of its renowned reliability and durability, it is critical to acknowledge that you might experience some common problems with your Kawasaki Brute Force 300. However, these problems can be minimized by regular maintenance as outlined in the instruction manual.

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