THEORY OF OPERATION
ENGINE—FD620D, K SERIES
FUEL INJECTION AND AIR SYSTEM COMPONENTS AND OPERATION—445
Fuel Tank Cap Fuel Tank Relief/Check Valve
Fuel Gauge Sensor
Breather Hose Air Filter Inlet Hose
Fuel Tank Fuel Pump
Throttle Lever Air Filter Cover
Primary Element Secondary Element
Throttle Cable Fuel Pump Screen Slow Idle Stop Screw
Throttle Body
Pressure Fuel Hose
Fuel Filter
Fuel Pressure Regulator
Fuel Return Hose
Pressure Fuel Hose Fuel Injector
Throttle Control Plate
Fuel Return Hose
Throttle Control Lever
Governor Lever
Fuel Pressure Relief Screw
M55612
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