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Unable to Change Gear - Clutch Always Engaged

After successfully installing an engine upgrade using our installation kit, some customers may encounter a common issue: difficulty or inability to shift gears while the engine is running. Fortunately, this problem can be easily resolved with a few simple steps.

Verify Engine Idle RPM: To ensure smooth gear shifting, it's crucial to maintain an idle speed between 1100-1200 RPM. You'll need a tachometer, which can be purchased here. If you find it challenging to reach the recommended RPM range, there may be an issue with the carburetor. In such cases, we recommend contacting your engine supplier for a replacement.

Confirm Belt Deflection: Proper belt deflection is essential for smooth gear transitions. Ensure there is 1"-2" of slack in the belt. It's important to use the provided belt from our kit, rather than an alternative you may have obtained elsewhere. Adjust the engine's position as needed to achieve the correct deflection. You can measure this by gently pressing down on the belt with your finger.

Check Clutch Engagement: In rare instances, gear shifting problems can be attributed to a malfunctioning clutch that engages the belt below the optimal rate. If you've confirmed the engine's idle speed and belt deflection are correct, but the issue persists, please reach out to us at Include a video demonstrating the clutch behavior at both idle and mid throttle, as well as a video showing the tachometer RPM at idle, along with a brief description of the problem.

By following these steps, you can swiftly address gear shifting difficulties after completing your engine installation. Maintaining the proper idle RPM, verifying belt deflection, and addressing any clutch concerns will ensure a seamless experience with your newly installed engine. If you encounter any challenges, don't hesitate to contact our technical support team at for further assistance.


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