Section 2 • SpecificationsREV DJuly 2011Part No. 112657 GS-2668 RT • GS-3268 RT 2 - 7Kubota DF752 EngineDisplacement 45.21 cu in0.74 litersNumber of cylinders 3Bore & stroke 2.68 x 2.68 inches68 x 68 mmHorsepower, Gross intermittent 24.8 @ 3600 rpm18.5 kW @ 3600 rpmFiring order 1 - 2 - 3Compression ratio 9.2:1Compression pressure 128 to 185 psi8.8 to 12.7 barLow idle 1500 rpmFrequency 300 hzHigh idle 3200 rpmFrequency 640 hzGovernor centrifugal ball mechanicalValve clearances, cold 0.0057 to 0.0072 inches0.145 to 0.185 mmEngine coolant capacity 3.1 quarts2.9 litersLubrication systemOil pressure 28 to 64 psi(operating temperature @ 3850 rpm) 1.9 to 4.4 barOil capacity (including filter) 3.4 quarts3.25 litersOil viscosity requirementsUnits ship with 15W-40.Extreme operating temperatures may require the use ofalternative engine oils. For oil requirements, refer to theEngine Operator Handbook on your machine.Fuel pumpFuel pressure, static 2.84 psi0.19 barFuel flow rate 0.125 gpm0.47 L/minStarter motorBrush length, new 0.669 in17 mmBrush length wear limit 0.453 in11.5 mmBrush spring tension 50 to 91 ounces13.7 to 25.5 NBatteryType 12V DCGroup 34/78Quantity 1Ampere hour 75AHCold cranking ampere 900AReserve capacity at 25A rate 125 minutesIgnition SystemIgnition spark advance 18° BTDCIgnition coil primary resistance 1.3 to 1.6Ω@ 75°F / 24°CIgnition coil secondary resistance 10.7 to 14.5 kΩ@ 75°F / 24°C#1 Spark plug wire resistance 2.81 to 4.79kΩ#2 Spark plug wire resistance 3.4 to 5.8kΩ#3 Spark plug wire resistance 3.57 to 6.09kΩSpark plug type NGK BKR4E-11Spark plug gap 0.039 to 0.043 inches1 to 1.1 mmAlternatorOutput 30A, 14V DCFan belt deflection 1 /4 to 3 / 8 inch7 to 9 mmContinuous improvement of our products is aGenie policy. Product specifications aresubject to change without notice.SPECIFICATIONS
