20GX2
Evolution
®
Gas Engines
Page 1: ...20GX2 Evolution Gas Engines...
Page 2: ...by LLC This manual contains instructions for safety operation and maintenance It is essential to read and follow all the instructions and warnings in the manual prior to assembly setup or use in order...
Page 3: ...gine securely on a bench mount or high quality engine mount Always use the correct size and pitch of propeller for your engine Refer to the Propeller Chart in this manual Always confirm proper balance...
Page 4: ...on of the burnt gas mixture when compared to a glow system We decided to include an inverted wraparound muffler that would make a more compact and clean installation We also repurposed the fuel pressu...
Page 5: ...etry RPM Adapter Cable EVOA121 Sintered Plastic Filter Clunk EVOG10300 Ignition Unit EVOG10350 Spark Plug EVOG20601B Muffler EVO110E100A Muffler Screws Gasket Optional Items APC15060 APC16060 15 x 6 p...
Page 6: ...ks of fuel The muffler screws may loosen from heat and vibration After the third tightening no further muffler loosening should occur Connecting the Throttle Linkage 1 Use a secure method to attach th...
Page 7: ...g de fueling your model B If using a two line tank connect a T fitting inline with the carburetor supply line and route one side of the T to a convenient location for fueling de fueling your model We...
Page 8: ...ough the firewall so be sure to plan ahead and provide adequately sized holes that will allow you to pull either the ignition sensor connector or the spark plug cap connector through the holes for lat...
Page 9: ...f the fuel is mandatory in two different spots in the system 1 Between the fuel jug and the tank 2 Within the fuel tank itself with a sintered plastic filter clunk EVOA121 One of these filters is incl...
Page 10: ...ss First tank of fuel Set the high speed needle valve at 1 50 turns out and use the suggested break in prop Run the engine on the ground for its first tank of fuel and DO NOT go above half throttle Cy...
Page 11: ...justing prior to the engine warming up will lead you to inaccurate settings As the engine warms up you will notice the rpms naturally rising If you do not have a temp gun or have sensors installed on...
Page 12: ...aintains the rpm achieved when the throttle is wide open Your goal here is to achieve a good transition between high and low speed and that the high speed rpm will be steady on the ground 2 Fly your a...
Page 13: ...a The engine responds instantaneously Your low speed needle is set perfectly Now use your throttle trim to achieve the lowest reliable idle b The engine slowly accelerates to full throttle This indica...
Page 14: ...cylinder head bolts 1 Carefully remove the cylinder liner 2 Visually examine the piston and cylinder to find the possible cause of the engine s mechanical problem Mechanical repairs must ALWAYS be com...
Page 15: ...8 Back Cover Set EVOG20102 19 Back Cover Screw EVO61122 20 Muffler Assembly EVOG20601B 21 Complete Ignition Set EVOG10300 22 Pump Case Parts EVOG0888A 23 Sintered Plastic Filter Clunk EVOA121 24 Carbu...
Page 16: ...EVOG15844 41 Main Carburetor Body B EVOG15827B 42 Carburetor Barrel Retaining Bolt EVOG15825 43 Carburetor Pump Screws 4 EVOG15825B Exploded View 1 3 4 29 5 6 7 24 27 35 10 11 12 25 29 34 26 32 36 41...
Page 17: ...lting liability If you as the purchaser or user are not prepared to accept the liability associated with the use of the Product purchaser is advised to return the Product immediately in new and unused...
Page 18: ...of purchase date Provided warranty conditions have been met your Product will be serviced or replaced free of charge Service or replacement decisions are at the sole discretion of Horizon Non Warrant...
Page 19: ...Instructions for disposal of WEEE by users in the European Union This product must not be disposed of with other waste Instead it is the user s responsibility to dispose of their waste equipment by ha...
Page 20: ...trum trademark is used with permission of Bachmann Industries Inc Tygon is a registered trademark of Saint Gobain Performance Plastics Corporation Viton is a registered trademark of E I DuPont de Nemo...
