DLE-20 Operator’s Manual Specifications Displacement: Performance: Idle Speed: Ignition Style: Recommended Propellers: Spark Plug Type: Diameter × Stroke: Compression Ratio: Carburetor: Weight: ™ © 2011 Hobbico®, Inc. Fuel: 20cc [1.2 cu. in.] 2.5 HP / 9,000 rpm 1,700 rpm Electronic Ignition 14 u10, 15 u 8, 16 u 6, 16 u 8, 17 u 6 CM6 (Gap) 0.018in.– 0.020 in. [0.45mm – 0.51mm] 1.26 in. [32mm] u 0.98 in. [25 mm] 10.5 :1 DLE MP 148 100424 with Manual Choke Main Engine − 1.43 lb [650 g] Muffler − 1.
Parts List (1) DLE-20cc Gas Engine w/DLE MP 148 100424 (1) DLE Spark Plug (NGK CM6 size) with additional spring (1) Muffler with gasket (2) 4 x 14 mm SHCS (muffler mounting) (1) Electronic Ignition Module with additional tachometer lead (1) Silicone Pick-up Wire Cover / Ignition Wire Cover (1) Red Three Pin Connector Lead with Pig Tail (ignition switch) (1) Long Throttle Arm Extension with installation screw and nut (2) Three Pin Connector Securing Clips (1) DLE Decal (not pictured) Safety Tips and Warnin
● For your safety and the safety of others, please do not stand in front or in line with the propeller when the engine is running. Keep onlookers away from the running engine, especially small children. ● Always use a balanced spinner and a balanced propeller. An unbalanced spinner and propeller combination will cause high levels of vibration and may cause the propeller shaft to break. Always use a lightweight spinner on your engine.
Install all electronic radio devices as far away from the engine as possible. ● The throttle and choke pushrods should be non-metallic. ● If the engine is not to be used for more than a month, drain the fuel tank and remove any fuel from inside the carburetor. Do this by running the engine at idle until it quits by running out of fuel. Keeping gasoline inside the carburetor over an extended period of time will damage the diaphragm valve and clog passages inside the carburetor.
Installation Instructions Prepare the engine for installation Before beginning installation it’s a good idea to plan location of the various components of the engine. Many of the following steps may need to be completed in a different order than listed. 1. Check to see that all screws and bolts are tight. Check carefully for any cracks, broken, or missing parts. Tighten or replace any damaged or missing parts before proceeding. 2.
3. Connect the kill switch lead to the red connector from the ignition control module using the lead from the kill switch or with the included three pin connector with pig tail. Use one of the included three pin securing clips to secure the connection. 4. Connect the ignition module battery to the kill switch. Any 4.86.0V, 1000mAh and above capacity battery will work well for this. Use heat shrink tubing to secure this connection. 5.
. Secure all connections with heat shrink tubing (not supplied). 8. Install the silicone ignition wire cover over the ignition wire. 9. Install the spark plug into the engine head (7-8 lbs torque).
on the bolts before securing the nuts onto the bolts on the rear of the firewall. Be sure to use Threadlocker on the screws holding the engine mount to the firewall. 3. Place the engine on the engine mount and at the recommended distance from the firewall and test-fit the cowling on the aircraft to verify the distance. When you’re satisfied with the engine’s position, mark the location of the four holes on the mount. 4. Remove the engine from the mount.
7. Install the throttle servo as far as possible from the engine. Make sure that you get the carburetor’s full range of rotation with your servo travel. If needed, use the included LongThrottle Arm Extension. Be sure to use a non-metallic linkage through an outer pushrod tube and a screw lock connector so that the linkage is adjustable. Components for the non-metallic linkage can be purchased at your local hobby shop. 9 8.
9. Install the choke servo (optional) at the same distance as the throttle servo from the engine. Be sure to use a non-metallic linkage and a Faslink to secure the throttle linkage to the servo. 10. Connect the ignition wire from the ignition module to the spark plug. 11. Install the muffler onto the engine. Be sure to use threadlocker and that the ignition wire does not contact the muffler. 12. Cut all necessary clearance, carburetor adjustment, cooling, and exhaust holes in the cowl.
Install the Propeller 1. It is recommended that you test-run, tune, and/or break-in the engine before flying. To make this easier we recommend that you remove the cowling. 2. Set the engine near the beginning of the compression stroke. Note the position of the ignition magnet with the engine inverted. 3 3. Place the spinner back plate on the engine and the propeller on the crankshaft at the one o’clock position. 4. Install the prop washer and 8x1.0mm adapter nut (DAVQ9810) on the crankshaft. 5.
Adjustment of the Engine Each DLE Engine has been factory preset. However, differences in elevation will influence the performance of the carburetor. To obtain optimum output of the engine, slight adjustment of the carburetor may be necessary. Engine Functions and Adjustments 1. Choke Control (the choke control should be used when the engine is cold) 2. Throttle 3. Idle Adjustment Screw (adjust the idle speed) 4. (L) Low-speed Needle (adjusts the fuel/air mixture at low speeds) 5.
turn the needle to the fully stop/closed position and then open the needle 1.5 turns). It is recommended that the High-speed needle be adjusted by the use of a tachometer to obtain maximum speed. Smooth acceleration and deceleration is an indicator of proper engine performance. Ignition Timing Adjustment The ignition timing is preset on the DLE-20 at 38-40° beforeTop Dead Center (TDC).
Problem: If Your engine does not reach full rpm. or Carbon build-ups appear consistently on your spark plug. Solution: The high-speed needle valve “H” is too rich. Close it up 1/8 turn and try again. Starting Procedures When starting the engine the first time and during break-in it’s recommended that you run the engine without the cowling. Also, for safety reasons do not adjust the carburetor while the engine is running. There are two recommended ways to start the DLE-20: A.
B. Electric Starter Starting A 24V electric starter is recommended to start the DLE-20 1. Make sure you use a good quality, lightweight aluminum spinner. 2. Have someone help you hold the airplane while you start it. 3. Switch the ignition to ON, close the choke plate on the carburetor and open the throttle slightly from the idle position. 4. Use your electric starter to turn the engine over for several seconds, until a popping sound is heard. This indicates that the engine is firing. 5.
Engine Troubleshooting If your engine fails to start after the preceding starting procedures please check the following.
Optional Digital Tachometer (not included) An optional Digital Tachometer is available that can be directly connected to the ignition and display the RPM of the engine. The Futaba ® DSC Charge Adapter (FUTM4243) can be mounted in the fuselage and allows easy external plug-in of the Digital Tachometer. Many of the DLE Ignition modules have an additional lead to plug into the Digital Tachometer. If your ignition module does not have this additional lead, the DigitalTachometer can still be used.
Engine Maintenance Please clean the fuel filter in the DLE Carburetor periodically. Failure to do so may result in miss-calibration of the needle adjustments. In order to do this it is necessary to remove the Phillips head screw which secures the carburetor filter cover and the carburetor filter gasket. Use only carburetor cleaner to clean the opening around the filter.
Warranty Information The DLE-20 has a two year limited warranty through Hobby Services beginning at the date of purchase. Please retain your receipt as your proof of purchase. Contact Us Hobby Services 3002 N. Apollo Drive Suite #1 Champaign, Il 61822 Ph: 217-398-8970 Fax: 217-398-7721 E-mail: enginesupport@Hobbico.com Web address: www.hobbyservices.
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Replacement Parts Stock No. Key No.
0.98 in. [25 mm] 2.25 in. [57 mm] 2.20 in. [56 mm] 2.37 in. [60 mm] 3.56 in.
DLE-20 Mounting Pattern with DUBG1307 Engine Mount 2.75 in. [ 70 mm] 2.75 in.
