油量调节 meaning in English

fuel flow control
fuel-flow control
fueling filter

Fuel control unit
油量调节装置
Make the sewing machine run idle for approximately 30 seconds after adjusting with the adjust pin , insert a sheet of paper for confirming the oil amount ( oil spots ) from the direction of arrow mark , and confirm that the amount of oil is adequate
用油量调节销调整后，请进行30秒左右的空运转，按照箭头方向插入确认油量(油迹)专用纸确认油量是否适量。