the pump slanting and reducing elbow. turn the water pump inclined or voluminous, and make the outlet water to the sink.
shorten the line. remove 1 meter of steel tube, 10 hours can save diesel 0.21 kg.
expand the water tube. change the 4-meter 10cm water hose to 15 cm tubes and save 0.5 kg for 10 hours.
remove the filter when water can be kept clean.
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