1. The engine may not be jetted properly. If the jetting is too lean, the engine will not get enough fuel and will run poorly at low RPM. If the jetting is too rich, the engine will get too much fuel and will run poorly at low RPM.
2. The spark plug may be worn out or damaged. A worn-out or damaged spark plug will not provide the necessary spark to ignite the fuel and air mixture, and the engine will run poorly at low RPM.
3. The air filter may be dirty or clogged. A dirty or clogged air filter will restrict the flow of air into the engine, and the engine will run poorly at low RPM.
4. The exhaust system may be blocked or damaged. A blocked or damaged exhaust system will restrict the flow of exhaust gases out of the engine, and the engine will run poorly at low RPM.
If you have checked all of these things and the engine is still not running well at low RPM, it is possible that there is a mechanical problem with the engine. You should take the bike to a qualified mechanic for further diagnosis.
Here are some tips for getting your 125 KTM power band to work better on low RPM:
* Use the correct jetting for your bike. The correct jetting will provide the engine with the right amount of fuel and air for optimal performance.
* Replace the spark plug if it is worn out or damaged. A new spark plug will help the engine to ignite the fuel and air mixture more effectively.
* Clean the air filter regularly. A clean air filter will allow the engine to breathe properly.
* Inspect the exhaust system for any blockages or damage. If the exhaust system is blocked or damaged, it will restrict the flow of exhaust gases out of the engine.
By following these tips, you can help your 125 KTM power band work better on low RPM and improve the performance of your bike.