DLE-85 Operator’s Manual Specifications Displacement: Performance: Idle Speed: Ignition Style: Recommended Propellers: Sparkplug Type: Diameter × Stroke: Compression Ratio: Carburetor: Weight: ™ 1 © 2014 Hobbico®, Inc. Fuel: 84.88cc 5.18 cu in 8.5HP/7,500 RPM 1,500RPM Electronic Ignition 25×10, 26×9, 27×8 NGK CM6 (Gap) 0.018in.– 0.020 in. [0.45mm – 0.51mm] 2.05in(52mm) × 1.57in(40mm) 9.5: 1 DLE with Manual Choke Main Engine – 68oz [1930g] Muffler – 8.8oz [250g] Electronic Ignition – 4.
Parts List (1) DLE-85 Gas Engine with DLE Carburetor (1) CM6 Spark Plug with Ignition Wire Spring (1) Muffler w/Gasket (1) 30mmx120mm Exhaust Tube with Clamp (2) 5x20mm SHCS (muffler mounting) (1) Electronic Ignition Module w/ Additional Tachometer Lead (4) 68mm Engine Mounting Standoffs (1) Isolation Engine Mount (8) Isolation Mount Grommets (4) Isolation Mount Spacers (5mmX9mmx15mm) (8) 5x25mm SHCS (engine mounting) (4) 5x20mm SHCS (engine mounting) (4) 5x10mm Washers (4) 5x19mm Flat Washers (6) 5x50mm S
● During the break-in period, it is recommended that the engine be installed on the aircraft or a test stand with an appropriate shock absorber. Otherwise it is probable that vibration could rebound back to the engine and serious damages may occur during the break-in period. Break-in should be considered about the first 3-5 gallons you run through the engine. ● For your safety and the safety of others, please do not stand in front of or in line with the propeller when the engine is running.
● The throttle and choke pushrods should be non-metallic. ● In case 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 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. Install the silicone wire cover over the pick up lead coming from the engine (cut the excess silicone wire cover) and connect the lead to the pick–up lead from the Electronic Ignition Module. Secure the connection with the included three pin connector securing clip.
4. Connect the ignition module battery to the kill switch. Any 4.8-8.4V, 1000 mAh and above capacity battery will work well for this. Use heat shrink tubing to secure this connection. Optional: Install the TX activated gas engine kill switch (DLEG9205) between the manual on/off switch and the ignition as shown above. This is especially important during the starting sequence as it requires the manual on/off switch to be in the ON position before ignition can occur.
Switch (Not included) Charge Lead Battery Lead Ignition Battery Lead OPTO Gas Engine Kill Switch LED (DLEG9205, not included) KILL SWITCH Rx Ignition Rx Batt Lead Ignition Control Switch Wire (To On/Off Switch) Tachometer Lead/ RPM Signal Output Ignition Wire (To Spark Plug) Pick-Up Sensor Wire (To Sensor On Engine) OPTIONAL ELECTRONIC IGNITION SYSTEM Tachometer (Not included) DLEG5525 Installing the DLE-85 on Your Airplane Note: The DLE-85 must be installed on at least a 9.
5. Install the standoffs to the mount by inserting (4) 5x25mm SHCS and (4) 5x19mm flat washers through the backside isolation mount. Mount the engine standoffs and isolation mount to the firewall by installing the (4) 5x25mm SHCS through the isolation mount and into the firewall into the 5mm blinds nuts (not included). Note: The proper orientation of the mount can be seen on the front of this manual. Be sure to use threadlocker. 6.
4. Install the manual on/off switch on the aircraft so that it is easily accessible from outside the plane. 5. Install the throttle servo at least 305mm [12"] away from the engine. Make sure that you get the carburetor’s full range of rotation with your servo travel. Be sure to use a non-metallic linkage. 6. Install the choke servo (optional) at least 305mm [12"] away from the engine. Be sure to use a non-metallic linkage. 7. Install the ignition module securely in the airplane forward area.
13. Ensure the sensor wire is supported as close to the sensor pickup as possible. Flight loads may cause stress and damage to the wire where it enters the sensor body. 14. Make sure the cowl is secured to the airplane and that the spinner to cowl clearance is at least 3.2mm [1/8"]. If starting the engine the first time and during break-in it’s recommended that you run the engine without the cowling.
4. Place the propeller on the crankshaft at the one o’clock position. 12 9 3 6 5. Mark the location of one of the outer holes. Use a GPM Dead Center Hole Locator (GPMR8130) to center and start the hole. 6. Remove the propeller from the engine and drill the outer hole using a #35 drill bit as a pilot hole. Next use a #5 (.2055" / 5.21mm) drill bit to finish the hole. In order to achieve a clean opening on both sides of the propeller, drill only half way through the propeller with the finishing drill bit.
Starting Procedures There are two recommended ways to start the DLE-85: A. Manual Starting Note: When hand starting the DLE-85, use a thick glove or heavy duty starter stick to protect your hand. 1. The propeller should be installed on the drive washer so that it is at the one o’clock position and at the beginning of the compression stroke so that it is comfortable to flip it through compression. 2. Have someone help you hold the airplane while you start the engine. 3.
B. Electric Starter Starting 1. A 24 volt electric starter is recommended to start the DLE-85. Make sure you use a high quality, lightweight aluminum spinner. 2. Have someone help you hold the airplane while you start it. 3. Close the choke on the carburetor and open the throttle slightly from the idle position. 4. Switch on, or power your radio system and make sure you have control of the throttle visually at the carburetor.
Engine Troubleshooting If your engine fails to start after the preceding starting procedures please check the following.
Adjustment of the Engine Each DLE Engine has been factory preset. However, elevation changes will influence the performance of the carburetor. To obtain optimum output of the engine, slight adjustment of the carburetor maybe necessary. Also, for safety reasons do not make adjustments to the carburetor while the engine is running. Engine Functions and Adjustments 1. Choke Control (the choke should be used when the engine is cold) 2. Idle Adjustment Screw (adjust the idle speed)/Throttle Stop 3.
High Speed Needle Adjustment Turning the High-Speed Needle (No.5) clockwise will lean the fuel/air mixture at high speeds. Turning the High-Speed Needle (No.5) counter-clockwise will richen the fuel/air mixture at high speeds. (The default or factory setting of the High-Speed Needle is as follows; turn the needle to the fully stop/closed position and then open the needle 1.5 turns). It is recommended that the HighSpeed Needle be adjusted by the use of a tachometer to obtain maximum speed.
Problem 1. Engine stops at full throttle. 2. Engine hesitates when accelerated rapidly. 3. The engine will not come up to full rpm at full throttle. Solution The high-speed needle valve “H” is too lean. Open it 1/8 of a turn and try again. Problem 1. The engine does not reach full rpm. 2. Carbon build-ups appear consistently on your spark plug. Solution The high-speed needle valve “H” is too rich. Close it 1/8 turn and try again.
Optional Mini Tachometer An optional DigitalTachometer (DLEG5525) is available that can be directly connected to the ignition and display the RPMs of the engine.This unit can be installed on the aircraft or used to spot check the Engine RPMs. Do not install or uninstall the Digital Tachometer while the engine is running. Many of the DLE Ignition modules have an addition lead to plug into the optional tachometer.
Warranty Information The DLE-85 has a two year limited warranty through Hobby Services beginning at date of purchase. Contact Us Hobby Services 3002 N. Apollo Drive Suite #1 Champaign, Il 61822 Ph: 217-398-0007 Fax: 217-398-7721 E-mail: hobbyservices@hobbico.com Web address: www.hobbyservices.com 5.51 in. [140 mm] 7.87 in.
Notes 21
1 2 3 39 4 31 5 8 21 30 19 20 7 32 33 9 5 22 23 24 25 26 27 10 28 11 29 6 34 14 13 12 36 38 16 17 37 18 35
Replacement Parts Mfg Stock No.
DLE-85 Mounting Pattern (for anti-vibration mount) 2.56 in. [65 mm] 2.56 in.