
The oil drain port is located above a round cover on the right side. Oil filter: The oil filter is a cylindrical component that needs to be replaced regularly. It should be changed every time the engine oil is replaced. The oil filter is used to filter the engine oil. Without an oil filter, the oil would become dirty after some time. Engine oil: Engine oil is referred to as the lifeblood of the engine. Without engine oil, the engine cannot operate normally. Inside the engine, oil not only lubricates but also cleans, seals, cushions, prevents rust, and dissipates heat.

I've maintained my Jialing 125 multiple times. The oil drain port is located at the dedicated drain bolt on the bottom of the engine oil pan, which is quite obvious—just crouch down and look at the central underside of the bike to find it. Remember to warm up the engine for 5-10 minutes before draining the oil to thin it out for easier flow. Prepare an oil catch pan or an old bucket, and use a 12mm wrench to turn the bolt counterclockwise to loosen it, but don’t over-tighten to avoid stripping the threads. Before adding new oil, replace the oil filter to ensure proper engine lubrication—it should be changed every 2,000 kilometers. If you're unsure, refer to the manual for illustrated instructions to avoid damaging other components. After draining and refilling with new oil, start the engine to check for leaks. The process isn’t difficult but requires careful attention to safety.

I'm just learning to repair this motorcycle. The oil drain port of the Jialing 125 is located at the bolt on the lowest oil pan of the engine. Lie down and look towards the center of the bottom of the bike, that silver bolt is it. Warm up the engine before draining the oil to make it flow faster and drain more completely. Use a wrench to gently loosen it, and prepare something to catch the oil to avoid making a mess. Beginners often loosen the wrong bolt or get burned, so I recommend watching more YouTube videos to learn. The location is actually quite intuitive. Don't forget to replace the oil filter after changing the oil to ensure a longer engine life. Doing it yourself saves money and teaches skills, but take it step by step and don't panic.

Having worked in this industry repairing vehicles for many years, the oil drain port of the Jialing 125 is located at a standard plug position on the lower part of the engine oil pan. Use a 12mm wrench to turn it counterclockwise, and it's best to preheat for a few minutes to ensure the oil flows smoothly. The steps are simple: lift the motorcycle to a secure point, place a pan to catch the old oil, and be careful when loosening the bolt to avoid damage by using excessive force. The plug is located in the center of the oil pan, so be cautious not to mistakenly loosen other fasteners. When changing the oil, take the opportunity to check the condition of the filter element, generally a cycle of 2000 kilometers is about right. Ensuring the oil passages are clear will make the machine run more smoothly.


