When SA2 in a single state, push on pedal switch SF1 sliding block runs to muting point, then activated the pump to turn on SB2, then the sliding block will automatically run.

• 在SA2处于单次状态，踩动SF1将滑块运行到 变速电再按动油泵启动安钮SB2,此后滑块将自行运行。