kawasaki fh721v throttle linkage diagram

Kawasaki FH721V Throttle Linkage Diagram – Keeping Your Engine Running Smoothly

As the owner of a Kawasaki FH721V engine, you know how vital it is to keep it running smoothly. A faulty throttle linkage can put a halt to any work you’re doing with your engine, and even damage the engine itself. In this article, we’ll cover the basics of the throttle linkage system for the FH721V, and how to keep it in top working order.

Understanding the Throttle Linkage System

The throttle linkage system of the Kawasaki FH721V engine is quite simple. When the operator presses down on the throttle control lever, the throttle cable pulls on the governor arm, which in turn moves the throttle plate in the carburetor. The faster the engine goes, the more the governor arm moves, creating a smooth, consistent flow of fuel to the engine.

In order to keep this system functioning properly, it’s important to routinely check and adjust the throttle linkage components. Here is a breakdown of the various components:

  • Throttle Cable – connects the throttle control lever to the governor arm.
  • Governor Arm – connects the throttle cable to the governor assembly.
  • Throttle Plate – regulates the flow of fuel into the engine.
  • Governor Spring – helps control the movement of the governor assembly.
  • Throttle Return Spring – returns the throttle plate to the closed position when not in use.

Checking and Adjusting the Throttle Linkage System

In order to ensure that your Kawasaki FH721V engine is running smoothly, it’s important to regularly check and adjust the throttle linkage components. Here are some basic steps to follow:

  1. Inspect the throttle cable and governor arm to ensure they are both securely in place and not damaged. If you spot any issues, replace them immediately.
  2. Check the throttle plate to ensure it moves smoothly and is not stuck in a partially open or closed position. If it’s not moving freely, clean the carburetor and replace the throttle plate if necessary.
  3. Check the tension on the governor and throttle return springs. If they feel loose or broken, replace them with new ones.
  4. Adjust the governor arm if necessary. The correct adjustment will vary depending on your specific engine, so refer to your owner’s manual for details.
  5. Finally, test the throttle linkage system by starting up the engine and giving it a few quick revs to make sure everything is working together smoothly.


By following these basic steps, you can keep your Kawasaki FH721V engine running smoothly and avoid unnecessary downtime due to a faulty throttle linkage system. Remember to always refer to your owner’s manual for specific details and instructions, and never hesitate to replace any components that are damaged or not functioning properly. With a little regular maintenance, you can keep your engine running at its best for years to come.


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