Delong cab due to the throttle, if combined with the clutch and engine speed are not synchronized, the engine may appear high speed exceeds the rated speed of the engine parts are damaged, or even directly cause bad piston, folding rod failure when the environment temperature is above 15, or the starting time temperature above 35 degrees Celsius, is slightly higher than the throttle at idle is appropriate. If the ambient temperature and the temperature is low, starting when the first not to the cylinder oil supply, the preheating operation with small throttle starting. Delong cab oil bath air filter to maintain focus on cleaning and cleaning the filter oil bath. Filter cleaning. First filter container is in the wash oil full immersion in a period of time, remove the dirt after the dissolution; on the filter oil rejection net, it is best to use compressed air from the filter down will be blown clean. Wash oil on the filter oil or blow after the rejection of net net, then In the oil temperature is about 50.C in the oil, each filter wire mesh are uniformly adhered to a layer of oil film, Delong cab may have highly corrosive stains, such as asphalt, oil, birds, insect feces and so on, these stains are difficult to clean, must be right. Methods the throttle starting clutch a violent or belt slipping, transmission parts will suddenly load impact, accelerate parts wear, or even directly cause mechanical damage. Then remove the filter, drain the excess oil until the oil dripping, otherwise it will affect the charging effect. Cleaning the filter shell of dirt, and wipe clean; check the welding parts have no open welding, crack, joint filter casing and the oil pool there is no deformation, gasket is damaged. Most car beauty decoration shop, will use alkaline cleaning agent is large, although there are whitening, decontamination, but there will be some troubles, Too strong alkaline cleaning agent will soak cloth, leather chair, ceiling, end up hardening and cracking. The professional practice should be cleaning liquid selected pH of not more than 10, with the car beauty special pumping washing machine, circulating water in a clean and a lot of dirt and cleaning out, and this will take part of the internal moisture, so moisture is too heavy, in the course of time decay or even fall off.