directions for use 2.the injection pump must be deposited in dry place, don't deposit it with acid, soda and other artidesmay cause which be widely used in the fields of automotive,marine,agricultural machinery and engineering machinery. 1.clear the product before using,don't take apart proter tive cap to avoid dirt enter into oil-in hole 3.please assemble the injector according to the requirement of the use of crude oil engine, Manufacturer: Aundhegrtt