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. [. . . ] 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. Do not use any silicon sealers on the fuel system. Gas can break it down and carry it into the carburetor. 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. Run at least 2 to 4 gallons of petroleum oil/gas mix for break-in. This allows the ring to seat quickly without blow by. Use a prop that allows peak RPM over 6, 200 during the break-in process. The High needle can be set just slightly rich during break-in. Too rich will cause problems with excess residue and carbon build up. After the break-in process, we recommend a high quality synthetic oil. As for brand of oil, there are many good ones on the market. 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!Avoid large/heavy load props during the break-in period. 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. Be more concerned about overloading the engine than over revving it. 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. [. . . ] We cover your engine's warranty, not someone at the field or a stranger on the Internet. Please give us the opportunity to help! 8 DA85 WARRANTY Please Read! Your DA85 engine and ignition system are covered with a 2 year warranty by Desert Aircraft, starting from the date of purchase. This warranty covers defects in workmanship and materials only. Being a high performance 2 stroke engine, certain parts can wear quickly. [. . . ]