The Hero Honda Karizma 2006 model is recommended to use 10W-30 grade engine oil. The specific amount of oil required for your motorcycle may vary slightly, but typically it would require approximately 1.7 to 2 liters of engine oil for a complete oil change.
To be sure about the exact amount, it's always recommended to refer to the owner's manual of your motorcycle. The owner's manual provides detailed information about the recommended grade of oil and the exact quantity to be used for your specific model and year. It will also provide instructions on the proper procedure for checking and filling the engine oil. If you don't have the owner's manual, you can contact an authorized Hero Honda service center or consult with a knowledgeable mechanic for accurate information regarding your motorcycle's oil requirements.