Is adding one liter of engine oil too much for a underbone motorcycle?

[LaDiana]

A bit too much, which may cause oil burning or reduced power. It's better to drain some if possible. Here are the relevant details: 1. Oil quantity: For most common domestic motorcycles below 150CC, the oil quantity usually doesn't exceed one liter. Never fill the motorcycle engine oil to full capacity - the oil level should always be checked using the dipstick or oil inspection window. 2. Dangers of overfilling: Overfilling engine oil can cause multiple issues including engine overheating, power loss, oil leakage, blue smoke from the engine, and clutch disengagement failure. 3. Dipstick position: The oil dipstick is located at the rear of the right side cover of the engine. After removal, you'll see a crosshatched area at the end of the dipstick - this is the oil level indicator zone. The two ends of this zone represent the upper and lower limits of the oil quantity.