Motorized crankcase oil changing system

摘要: A reversible fluid pump is driven by a electric motor under the control of three position toggle switch wired for off, forward and reverse. One port connected to four valve, one which off. hose drain receptacle or an oil supply connects other hoses from engine crankcases connect active ports valve. two valve adapts single use. The handle selectively positioning each valves extends perpendicularly stem when in off aligns with toggle. Safety latches alternate constructions, without thumb screw tightening means, are pivoted engage retain both system not