• Same mounting dimensions as the O.S. Max .61FX.:
• Advanced Bi-Metallic Liner process uses a double layer of platin material rather than one thick layer. This helps the metal bond t the cylinder and makes the plating more durable. Also, the platin process is more consistent, resulting in a more precise fit betwee piston and sleeve for better compression and longer life..:
• Power Box muffler design provides more volume for increased power i a very compact shape.:
• Angular head design offers increased surface area for better cooling.:
• Ball bearing-supported crankshaft.:
• 61A carburetor with diagonally placed needle valve eliminatin remote needle valve placement.:
• Two year limited warranty.:

• Displacement: 0.75 cu in (12.3cc):
• Bore: 1.02 (25.8mm):
• Stroke: 0.93 (23.5mm):
• Practical RPM: 2,000-16,000 RPM:
• Power Output: 2.4 PS, 2.37HP/15,000 RPM:
• Weight: 20.39 onuces (578g) w/o muffler:
• 26.46 ounces (750g) w/ muffler:
• Recommended Props: 14x6, 14x8, 15x7:
• Crankshaft thread size: 5/16-24:
• Distance from center of engine to drive hub: 2.62 (66.6mm):
• Distance between exhaust bolt mounting holes 42mm:
• Height from crankcase bottom to top of cylinder head: 4.07 (103.5mm):
• Height/crankshaft center to top of cylinder head: 3.20 (81.5mm):
• Width including mounting tabs: 2.4 (61mm):
• Width not including mounting tabs: 1.67 (42.6mm):
• Width between mounting holes same side: .98 (25mm):
• Width between mounting holes opposite side: 2.04 (52mm):
• Diameter of muffler body: 1.92 (48.8mm):
• Angle of muffler in relation to engine: 4°:
• Length from end of crankshaft to back of crankcase 5.09 (129.5mm):

O.S. Max 75 AX ABL Aircraft Engine with E3010 muffler, carburetor, #8 glow plug, illustrated instruction manual

High Speed Needle: 1.5 - 2 turns out from fully closed Low Speed Needle: 2mm gap between the needle and spray bar at full throttle (looking down the neck of the carb):