User manual DESERT AIRCRAFT DA85

[. . . ] DA85 O w ner ' s M anu al 6/10 Safety Instructions WARNING!This motor can cause severe harm to you, and/or others, if misused or if these safety precautions and instructions are not observed. Desert Aircraft is not responsible for any loss, injury or damage resulting from the miss-use of this product. You alone are responsible for the safe operation of your motor. Do not operate the motor if you do not want to be completely responsible for any damage or injury incurred or caused during its operation. [. . . ] We recommend purchasing your fuel from "name brand" gas stations. We have seen problems with cheaper gas from some discount type outlets. We recommend filtering your fuel between your fuel container and your plane's fuel tank. A high flow filter, or clunk/filter, between the tank and motor is also a good idea. Make sure the plane's tank is well vented and the fuel clunk moves freely. Use of any other fuel or additives such as nitro formulas, aviation gas, white gas, etc. , can harm the motor and void the warranty. For Break-in, we recommend a petroleum-based oil such as Lawn Boy Ashless or Pennzoil Air Cooled 2 stroke oil at 32:1 ratio. Use a prop that allows peak RPM over 6, 200 during the break-in process. After the break-in process, we recommend a high quality synthetic oil. Some oils, and their mix ratios, that Desert Aircraft recommends are: Red-line Two Stroke Racing Oil (40 to 1), Motul 800 (50 to 1), and Stihl HP Ultra (50 to 1). These oils can be found at most motorcycle or chainsaw shops. 4 Recommended Props Always tighten prop bolts and inspect your prop and spinner before each flight!Regardless of size or brand, it is important to not overload the engine during break-in. Check the rpm on the first run and make sure it is around 6, 200 rpm or higher. The optimum prop for your aircraft will depend on exhaust type, airframe weight, airframe size/drag, altitude, and your flying style. Make sure the starting area is free of dirt, sand, gavel, or other loose debris Always wear a heavy leather glove when starting the engine. Turn on the radio system and check the throttle operation and position. ALWAYS BE PREPARED FOR THE ENGINE TO START ON ANY FLIP OF THE PROP, whether the ignition switch is on or off!Follow through quickly as you flip the prop so your hand swings out of the props path. Let the engine warm up for 15 to 20 seconds before advancing the throttle. The engine may not need to be choked if the engine is re-started shortly after the previous run. If the engine becomes flooded, removing or "pinching" the fuel line while flipping the prop quickly will help to dry things out. The spark plug can also be removed to speed the process. Needle Adjustments The needle farthest to the rear of the engine is the "High End" needle. [. . . ] Great care must be taken when trying to remove these carbon deposits to avoid damaging the parts. Once an attempt to remove carbon has been made, the task must be completed, as any remaining carbon may be loosened and can dislodge while the engine is running. This can damage the engine and/or bridge the spark plug. Manuals may be updated with additional tips and trouble shooting info from time to time. Please check our web site for downloadable manuals and updates. IF ANY PROBLEM PERSISTS, PLEASE CONTACT DESERT AIRCRAFT FIRST! We designed and manufactured your engine and have serviced and analyzed thousands more. [. . . ]