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Introduction
Fuel gas · · · Fuel gas flowing through the series of electromagnetic gas valves ( ⑪ ) is depressurized down to
atmospheric pressure by the gas regulator ( ⑩ ) and supplied to the gas mixer ( ⑨ ).
The high-pressure portion of the fuel system is separated from the engine compartment to assure
safety.
① : Engine coolant pump ⑦ : Engine coolant reserve tank ⑬ : Engine coolant temperature sensor
② : Exhaust air heat exchanger ⑧ : Engine ⑭ : Radiator cap
③ : Thermostat (140 ℉ (60 ℃ ) ⑨ : Gas mixer ⑮ : Exhaust air pipe
④ : Thermostat (158 ℉ (70 ℃ ) ⑩ : Gas regulator ⑯ : Exhaust water drain filter
⑤ : Sub heat exchanger ⑪ : Electromagnetic gas valve ⑰ : Exhaust water drain hose
⑥ : Radiator ⑫ : Air filter ⑱ : Sub oil reservoir
shows the fuel gas flow direction
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