Operating Manual ULPOWER UL260,UL350,UL390,UL520M0310: OM 260 - 520A01 Revision No: 00 Date: 2019-04-01 Page: 2 of 22Safety information The engine should only be installed and operated by persons familiar with the use of the engineand informed with regard to possible hazards. Familiarize yourself with the installation, maintenance en operational limits of your ULPowerengine. Failure to follow the instructions in this manuals can result in a serious malfunction or lossof power in flight , with possible loss of life, injury or damage to the equipment. Limit yourself toto the operations/ maintenance mentioned in ULPower manuals. If you are uncertain and in needof extra information please contact a ULPower authorized service centre. This engine is designed for possible application on aircraft used in VFR conditions which have thecapabilities of controlled gliding without engine power. You should be aware that any engine may seize or stall at any time. This could lead to a crashlanding and possible severe injury or death. For this reason, we recommend strict compliancewith the maintenance and operation manuals and any additional information which may be givento you by your dealer. Never fly the aircraft equipped with this engine at locations, airspeeds, altitudes, or othercircumstances from which a successful no-power landing cannot be made, after sudden enginestoppage. Make sure you know what engine your are using. Only engines UL260iSA /UL350iSA/UL390iSA/UL520iSA are suited for acrobatics (inverted flight, etc.). It should be clear that the choice, selection and use of this particular engine on any aircraft is atthe sole discretion and responsibility of the aircraft manufacturer, assembler and owner/user.ULPower makes no warranty or representation on the suitability of its engine's use on anyparticular aircraft. Furthermore, ULPower makes no warranty or representation of this engine'ssuitability with any other part, component or system which may be selected by the aircraftmanufacturer, assembler or user for aircraft application. Never run the engine without a propeller or flywheel as this will inevitably cause engine damageand present a hazard of explosion. Propeller/flywheel and its attachment with a moment of inertia in excess of the specified valuemust not be used and releases engine manufacturer from any liability. Improper engine installation and use of unsuitable piping for fuel-, cooling- and lubrication systemreleases engine manufacturer from any liability. Unauthorized modifications of engine or aircraft will automatically exclude any liability of themanufacturer for direct, indirect and/or sequential damage. Spare parts must meet with the requirements defined by the engine manufacturer. This is onlywarranted by use of genuine ULPower spare parts and/or accessories. They are available at theauthorized ULPower distribution- and service partners. The use of anything other than genuine ULPower spare parts and/or accessories will render anywarranty relating to this engine null and void. Respect all government or local rules pertaining to flight operation in your flying area. Fly onlywhen and where conditions, topography, and airspeeds are safe. Select and use proper and calibrated aircraft instrumentation. This instrumentation is notincluded with the basic ULPower engine. Before flight, ensure that all engine controls are operative. Make sure all controls can be reachedin case of an emergency. Unless in a run up area, never run the engine with the propeller turning while on the ground. Donot operate engine if bystanders are close.