.91HZ-PS 3D Rng 61B-PII

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

BOX DIMENSIONS: 6.25" W. X 4.13" H. X 7.63" L.
BOX WEIGHT: 1.83 LBS.