Regulation of iron absorption and transport. Iron for use in synthesis of heme, iron-sulfur centers and other non-heme iron proteins is obtained from the diet and via release of recycled iron from macrophages of the reticuloendothelial system that ingest old and damaged erythrocytes (red blood cells).
Four-stroke oil is more like the oil used in cars but both 2-stroke and 4-stroke oil serve the same purpose - to keep the engine lubricated. Four-stroke dirt bike oil comes in a variety of weights like 10w-40, 20w-50 and so on. It is not mixed with gas.
Many honda mopeds and scooters use a vacuum operated fuel supply valve. It is on the bottom of the tank, and has two hoses going to the carb. The larger one is the gas line, the smaller is the vacuum line.any honda mopeds and scooters use a vacuum operated fuel supply valve. It is on the bottom of the tank, and has two hoses going to the carb. The larger one is the gas line, the smaller is the vacuum line.