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Desert Aircraft DA50 EFI Owner's Manual

Electronic fuel injected engine
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DA50 EFI
Electronic Fuel Injected Engine
OWNER'S MANUAL

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Summary of Contents for Desert Aircraft DA50 EFI

  • Page 1 DA50 EFI Electronic Fuel Injected Engine OWNER’S MANUAL...
  • Page 2 DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C Document Revision Table Rev Description of change Revised by Revision Approved Approved Date Date Initial Release DMcClain 01/16/19 TWest 01/16/19 Update Spark Plug Callout DMcClain 07/29/19 DRB 7/31/19 Format and part list update R.Shoemaker 2/11/20 2/12/20 See HFE “Released Documents”...

  • Page 3: Table Of Contents

    DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C Table of Contents Section Page 1. General Safety 2. Un-Packing Your Engine 3. Getting Started a. Hardware Installation b. Transmitter/Receiver Set Up c. Starting Engine 4. Maintenance 5. ECM Signal Data a. Blink Patterns 6.

  • Page 4: General Safety

    DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C 1. General Safety Read and understand this Owner’s Manual before operating your engine. You can help prevent accidents by being familiar with the controls and observing safe operating procedures. Operator’s Responsibility: 1. The operator should know how to stop the engine quickly in case of an emergency.

  • Page 5: Un-Packing Your Engine

    DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C 2. Un-Packing Your Engine Caution Your Engine comes with wire harnesses attached to the intake assembly. Handle the engine with care when removing the assembly from the box. Package Contents 1. Engine with Throttle Body Assembly 2.
  • Page 6 DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C EFI Components and Descriptions 24 Pin ECM 14 Pin ECM Receptacle Receptacle MAP Inlet Figure 1: Engine Control Module (ECM) 14 Pin ECM Plug Fuel Pump CH 3 Servo (Throttle) Tach Output Battery (12V) Figure 2: ECM Input Harness from Receiver See HFE “Released Documents”...
  • Page 7 DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C 24 Pin ECM Plug Ignition 13 Pin Engine Plug Crank Sensor Figure 3: Main Engine Harness Heat Shrink: used to Exhaust Gaskets connect CHT sensor to (square holes) wire harness Figure 4: Assembly Hardware Fuel line between fuel Fuel line between tank and fuel pump...
  • Page 8 DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C Fuel In; from Fuel Fuel Out to Engine Tank Fuel Pump Electrical Connector Figure 5: Fuel Pump 13 Pin Engine Receptacle Figure 6: Engine and Crank Harness Crank Sensor Connector See HFE “Released Documents” folder for latest revision.
  • Page 9 DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C Fuel Fitting Throttle Servo Injector MAP Outlet Figure 7: Intake Components Figure 8: Throttle Body Gasket Order See HFE “Released Documents” folder for latest revision.

  • Page 10: Getting Started

    DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C 3. Getting Started Engine Oil This engine was calibrated using Red Line 2 Stroke Racing oil at a mix ratio of 40:1. This oil type and mix ratio should be maintained to ensure that the fuel injection system and engine operates as designed.

  • Page 11: Transmitter/Receiver Set Up

    DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C 4. Install the gray tube from the fuel pump push to connect to the injector port on the throttle body. Make sure the blue fuel filter is in this line between the pump and engine.

  • Page 12: Starting Engine

    DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C throttle), the ECM will remove power to both the injector and ignition system, thus stopping the operation of the engine. 3. (UAV option) Provide 5V to the enable line; when power is removed ECM will remove power to both the injector and ignition system thus stopping the operation of the engine.

  • Page 13: Maintenance

    DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C Starting Again After First Start 1. Verify that the ECM is powered on (Blue Light on ECM). 2. Verify that the throttle setting is between 25%-30%. 3. The engine should be started using an external spinner, or using a built-in starting alternator.

  • Page 14: Ecm Signal Data

    DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C 5. Signal Inputs/Outputs for ECM Table II: ECM 24 Pin Output Connector Signal Description Not Connected Not Connected Not Connected Not Connected Not Connected IGN PWR +6V power supply output from the Engine Control Unit for the ignition power.

  • Page 15: Blink Patterns

    DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C Table III: ECM 14 pin Input Connector Signal Description RS-232 Transmit PUMP SIGNAL Variable voltage output from fuel pump assembly. RS-232 Receive Not Connected Crank signal output ground reference PUMP (+) Fuel System power (routed internally from system power pin 14 and enabled by a high side driver (relay) from ECM state commands).

  • Page 16: Technical Specifications

    DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C 6. Technical Specifications Only use NGK CM-6 spark plugs. Plug gap is .018” to .020" (.38 to .50 mm) Size Torque Spark plug: CM-6, 10mm 90 in. lbs. Steel prop bolts: M4x 40mm 65 in.

  • Page 17: Warranty Information

    • Damage caused by improper handling, operation, or maintenance. • Damage caused by a crash. • Damage caused by using improper fuel or additives. • Damage incurred during transit to Desert Aircraft. WRAP AND PACK ENGINE CAREFULLY!! NOTE: DESERT AIRCRAFT WILL NOT SHIP ANY WARRANTY REPLACEMENT ITEMS UNTIL POSSIBLY DEFECTIVE ITEMS IN QUESTION ARE RECEIVED BY DESERT AIRCRAFT.
  • Page 18 DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C HFE International EFI System Customer Service: Phone: 520.578.0818 Email: sales@hfeinternational.com 1646 S. Research Loop Suite 170 Tucson, AZ 85710 EFI System Warranty Your HFE International EFI system is covered with a 1-year warranty by HFE International starting from the date of shipment from HFE International.

  • Page 19: Replacement Pats List

    DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C 8. Replacement Parts List See HFE “Released Documents” folder for latest revision.
  • Page 20 DA 50 EFI OWNER’S MANUAL HFEDCN0374 REV C Table V: Part numbers and descriptions See HFE “Released Documents” folder for latest revision.

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