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NEW YORK AIRWAYS 6.3.4 STARTING ENGINE Continued 12. Mixture lever -- Rich (after engine starts). NOTE: Should the engine fail to start within 30 seconds, let the starter cool for two minutes, then repeat the starting procedure. 13. Engine oil pressure and temperature gages -- Check. (Stop engine if the oil pressure does not register within 10 seconds or reach 40 psi within 20 seconds after starting). 14. Throttle -- 1100-1200 engine rpm. CAUTION: Care should be exercised when operating throttle as it is extremely sensitive when clutch is disengaged. Improper operation could result in excessive engine speed. 15. Manifold pressure purge button -- Press. 16. Inverter switch -- Check spare and off positions, then switch to main. 17. Fuel quantity test switch -- On as required for test. 18. Carburetor heat lever -- Hot, then cold. Check for rise in carburetor air temperature when in hot position. 6.3.5 AFTER ENGINE STARTS -- Warm-Up 1. Throttle -- 1700 engine rpm. (This speed will provide smoothest operation of engine while lubricating oil is cold). Ignition Switch Check After engine warm-up and prior to engaging rotors check the ignition switch for proper connection of ground wire. 1. Ignition switch -- Both.. 2. Throttle -- Closed ( index marks opposite one another ). 3. Ignition switch -- Off == momentarily. (Observe that engine stops firing). 4. Ignition switch -- Both. CAUTION: Make this check as quickly as possible to prevent engine backfire. If violent backfiring occurs during ground run of engine, a shutdown must be made to inspect the engine, induction, and accessory system for damage. Fuel Pump Check -- Engine and Booster 1. Fuel booster pump switch -- Off. 2. Fuel pressure gage -- observe fuel pressure reading within limits and warning light. 3. Fuel booster pump switch -- On. 6.3.6] ENGAGING ROTORS CAUTION: Rotor engagement must not be attempted when the clutch warning light is on. Under this condition, the clutch will travel immediately into the jaw position instead of starting friction engagement; and damage to the rotor system from premature jaw clutch engagement will result. Revised Issue J.E.G. L.G.C. Date: 1 April 1959 56