© 2008 Manufactured exclusively for Horizon Hobby, Inc. www.evolutionengines.com 877-504-0233 12912 12912_EVO(26GXmanual).
Evolution Engines 26GX US ER GU IDE ® 12912_EVO(26GXmanual).
Before using this engine, please read these instructions carefully. Introduction Congratulations on your purchase of the newest and one of the most technically advanced 2-stroke gas model airplane engines in the world. Whether you are new to the sport of model aviation or an experienced flier, you will enjoy the features of the new Evolution GX engine. Evolution® engines are designed to be the most powerful in their class, extremely easy to start and operate, and provide years of enjoyable service.
Mounting the Engine Fuel for the Evolution Gas Engine Most model airplane designs make provision for an engine mount. It is extremely important that the engine mount be securely attached to the airplane’s firewall and that the engine is securely fastened to the engine mount. Follow the instructions included with the airplane for mounting the engine. The engine should be fastened in place with 4 screws through a conventional beam mount. Use 8x32 screws for the 26GX.
Starting the Engine Evolution Gas Engines come with a carburetor adjusted to a basic setting. This setting should be maintained during the initial break-in runs. Choke Lever Before you first start the engine, make sure that the spark plug is screwed in and tightened and that the plug socket is fitted in place and fastened down properly. Fix the ignition sensor in Pressure Inlet the proper position above the magnet with the screws enclosed.
After starting and warming the engine for 30–45 seconds, adjust as follows: Step I- Move the throttle to 2/3 high throttle position quickly (fast acceleration), then repeat three times. If the engine accelerates smoothly go to Step III; if acceleration is not smooth go on to Step II. Step II- Faulty acceleration and a tendency to quit is usually attributable to a poor fuel mixture in the medium rpm range. Stop the engine and recheck the fuel feed (the fuel line must not be pinched or broken).
Troubleshooting Guide If the Engine Does Not Start Mechanical Faults - check and use a new spark plug if needed. - check fuel lines. - check for proper mechanical function by turning the engine over. - check that the carburetor is correctly installed. - remove the carburetor cover from the feed side; check the filter and blow off carburetor with compressed air (Caution: When using compressed air, use eye protection.); when reassembling be careful to maintain the proper order of the components.
26GX Evolution Engine Dimensions A mm B mm C mm D mm E mm 116 98 50 70 60 F mm G mm H mm I mm J mm 31 4.3 M10x1 10 33 26GX Evolution Engine Specifications Evolution 26GX Bore Stroke Displacement Weight of complete engine without ignition* Weight of ignition unit RPM range 33mm 30.1mm 25.7cc/1.6 ci 936 g/2.06 lb 165 g/5.8 oz 1400–9500 rpm Maximum power output** Maximum torque** Fuel Lubrication 3.8 HP/9000 rpm 2.
Evolution GX Engine Simple Start Ignition System The spark ignition included with your Evolution gas engine is a modern generation electronic ignition. There are many useful functions built into the microprocessor of this unit. In addition to the basic ignition functions, the unit has a FAIL-SAFE feature: After 90 seconds of inactivity, it automatically switches to an inactive state. In order to restart normal operation, it is necessary to turn the battery switch off and then back on.
Enabling or Disabling Battery Test This ignition makes it possible to enable or disable the battery test. The battery test is very useful when Li-Po or Li-Ion batteries are used. During the test, a series of flashes are generated and voltage is measured. When the battery passes the test, that means it will run for a minimum of 10 minutes in flight.
Programming Sequence Changing the Ignition Timing If using the battery test function If not using the battery test function - Make sure plug cap is attached to the plug - Turn on ignition and power up - Wait about 90 seconds until sleep mode is active; LED will begin flashing once per second - If battery test is enabled (jumper is plugged) remove the jumper from programming pins - Wait about 3 seconds; a flashing sequence changes itself - Unplug battery - Plug jumper back (to enable battery test) -
26GX Part Number Description Part Number Description EVO30013309 EVO3094N0101 EVO30940202 EV030940203 EVO30940301 EVO30940302 EVO30940306 EVO30940304 EVO30940305 EVO30940404 EVO3094N0501 EVO30940502 EVO30940503 EVO30940601 EVO30940650 EVO30940701 EVO30940702 EVO30940801 EVO30940802 Spark Plug NGK 5812 (sm cap) Crankcase Front Bearing Rear Bearing Rear Cover Rear Cover Screws - Set Rear Cover O-Ring Pressure Nozzle Pressure Nozzle Gasket (2pcs) Carburetor Screw (2pcs) Cylinder Head Cylinder Head Screws
