1. Water can corrode the pump , so water-borne substances are forbidden to use the pump for vacuuming and the pump for vacuuming. 2. Contains a lot of solvent substances First remove most of the solvent in the oven, and then use a vacuum pump. 3. Use the vacuum pump in the correct sequence to prevent reverse suction. 4. After using the vacuum oven, be sure to do a good job of cleaning, vacuum cleaning oven glass. 5. Wipe the surface anti-rust oil. 6. Clear the governor cavity, injection pump cavity anti-rust oil, add the required grades of lubricating oil. 7. The anti-rust oil in the fuel pipeline should also be removed before use. Connect the fuel to the fuel injection pipe line and keep rotating the fuel injection pump camshaft until the oil-out valve is tightly closed to emit clean fuel. 8. Fuel selection is reasonable. 9. You must use the fuel labeled. The general use of No. 0 diesel in summer, winter use -10 light diesel oil. 10. The fuel used must be clean and contain no impurities or moisture.