How to replace the loader oil：

1. Loosen the oil drain bolt under the oil pan to drain the oil, loosen and remove the oil grid, and then install a new oil grid. Add new oil to the oil grid and tighten the oil drain bolt. 
2. Then pour in new oil from the oil filler port, check that the oil on the oil gauge is close to the upper grid line, and finally cover the oil filler port
3. Unscrew the oil from the big nut under the oil pan, remove the oil filter element, wait until the oil is empty, wipe the screws of the oil pan, there is a magnet on the top, wipe off the iron filings on the top with a rag and toilet paper, tighten the screws of the oil pan, add oil to the oil filter element, install the engine oil filler port and refuel, check the ruler, about a barrel of more than a few points.

The role of oil filter:

1. The harmful impurities in the oil from the oil pan are filtered out, and clean oil is supplied to the crankshaft, connecting rod, camshaft, supercharger, piston ring, etc., to the role of lubrication, cooling and cleaning, thereby extending the life of these parts
2. The main function of the oil filter element is to achieve the frictional resistance between the moving parts in the engine, and to better reduce the wear of various parts. While the oil is delivered to all moving parts, the oil filter element has also been prepared in advance. When the engine is running at any time, the oil filter element will begin to absorb the oil impurities generated by the friction of the moving parts, and absorb them inside the filter element, so that they will not appear between the moving parts of the engine.
3. The oil filter element is to remove impurities, gums and moisture in the oil, and send clean oil to all moving parts in the engine.