User manual YS 56SR

[. . . ] OPERATOR'S MANUAL ( YS0015) 56SR (Helicopter Engine) Fig. 1 Bore Stroke Displacement Weight Practical rpm SPECIFICATIONS 23mm 22mm 9. 14cc 406g 2, 000 ~20, 000 NEEDLE VALVE ADJUSTMENT Idle, Hover and High needle valves all work the same way. Turning the needles clockwise will lean the fuel mixtures and counter clockwise will richer the fuel mixtures. [. . . ] Fuel Powermaster 30% Special Heli Blend Cool Power 30% Special Heli Blend Glow Plug _ YS #2 Enya #3 OS #8 IMPORTANT! Silicone rubber is used in many parts of the YS engine. Gasoline and other volatile solutions will damage silicone if used. FEATURES The 56SR is the latest in helicopter engine technology from YS. New stroke design for superior operation New carburetor design for easier adjustments. The fuel tank is pressurized and you need to relieve the pressure first. From the fully closed (clockwise) position, turn the needle valves counter clockwise as follows. Close the throttle to the idle position and connect the glow plug driver. The engine is now ready for starting. STARTING SETTING / OPERATING SETTING 5. High Needle refines the fuel mixture for forward flights without affecting the hovering adjustment. After the engine is started and warmed up, liftoff into a hover and check that the engine is running smooth with a good trail of smoke. Adjust the high-speed needle valve to obtain slightly rich but consistent setting. WARRANTY Strict quality control is implemented by our factory in all phases, from parts manufacturing to final assembly. If performance deteriorates or a part fails due to a manufacturing error, YS engine will repair or replace the engine at no charge in the period of one year from date of purchase. Should the engine be modified, incorrectly assembled or abused, there will be a normal charge for parts and labor. INSTALLATION 1. [. . . ] However, the engine should be adjusted slightly on the rich setting ( Hover Needle 2 times open) for the first few flights to insure proper break-in. Always use a good quality fuel which contain 15 ~30% nitromethane and an oil content of 18 ~23% low viscosity oil. 33 32 30 29 31 28 37 36 35 19 34 27 4 2 3 38 25 21 41 44 26 45 20 22 23 24 42 9 8 7 9 43 6 40 10 18 16 5 17 11 13 12 14 15 46 39 1 1370 PORTER DRIVE MINDEN NEVADA 89423 Phone: 775-267-9252 Fax: 775-267-9690 2009 SEP YS Parts and Service [. . . ]