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          This is the O.S. .91HZ-PS 3D Helicopter Engine with Pump
                          and 61B-PII Carburetor.

FEATURES: PD-08 pump works with a matched 61B-PII carburetor and integral
            regulator attached to carburetor to deliver a steady fuel supply
            at any altitude
          Short rectangular heatsink can be entirely enclosed inside cooling
            shroud to lower operating temperatures
          Newly designed piston and crankshaft further reduces vibration and
            improves torque stability over entire RPM range
          Two year limited warranty through manufacturer beginning at date of
            purchase

INCLUDES: O.S. .91HZ-PS 3D Helicopter Engine with Pump, 61B-PII Carb, #8 Glow
            Plug, instruction manual

REQUIRES: Fuel: 15% heli mix
          Glow igniter, glow plug wrench and field equipment

SPECS:    Displacement: 0.91 cu in (14.95 cc)
          Bore: 1.09 in (27.7mm)
          Stroke: 0.98 in (24.8mm)
          Practical RPM: 2,000 - 16,000
          Power Output: 3.4 hp @ 15,000 RPM
          Weight: 1.4 lb (635g)
          Height from crankcase bottom to top of cylinder head: 4" (103mm)
          Height/bottom of mounting tab to top of cylinder head: 3.2" (81.2mm)
          Distance between mounting holes same side: 0.98" (25mm)
          Distance between mounting holes opposite side: 2.0" (52mm)
          Distance between muffler screw holes: 1.6" (42mm)
          Distance/bottom of mounting tab to muffler screw holes: 1.7" (42.8mm)
          Length from front of case to backplate: 3.3" (83.8mm)
          Length from pump to end of crankshaft: 5.1" (131mm)
          Width of crankcase below mounting tabs: 1.7" (43mm)
          Width between mounting tabs: 2.4" (61mm)

          Needle Settings: High Speed: Two turns open from fully closed
                           Mid Range: One half turns open from fully closed
                           Mixture Control (low speed): Pre-set at factory

                                                                   jxs 10/05/09
                                                                   cnh 11/11/09
                                                                         ir/jxs



– If you need more information, use these O.S. resources –

E-mail: enginesupport@hobbico.com
Web Site: http://www.osengines.com/
Phone: 217-398-8970


 
Postal Address:
O.S.
3002 N. APOLLO DRIVE, SUITE #1
CHAMPAIGN, IL 61822  








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