PY250型平地机,其发动机的燃油系统进油路未设过滤装置。当来自燃油箱的燃油不洁净时,就会造成燃油滤芯堵塞,从而引起发动机自动熄火。修理的唯一方法是清洗油路和更换燃油滤芯。改进的方法是,在燃油箱的进油口加设一个进油过滤器,过滤器上再加装铜丝过滤网(见附图)。这样,来 PY250 grader, the engine’s fuel system into the oil road no filter device. When the fuel from the fuel tank is not clean, it will cause blockage of the fuel filter, causing the engine to turn off automatically. The only way to repair is to clean the circuit and replace the fuel filter. The improved method is to add an oil inlet filter to the oil inlet of the fuel tank, and a copper wire filter is additionally installed on the filter (see the accompanying drawing). This way, come