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*It should use light sensor equipment to test the speed of 4 stroke engine. The equipment used to test the speed of 2 stroke engine through testing the ignition is not suitable for 4 stroke engine.
*In May 2010,the data of engine's power is taken of output of crankshaft component.
*Engines' power depend on propeller size,propeller material,propeller shape,fuel quality,meteorological condition,altitude and so on.
*Suggested service life depends on maintenance, repairing and other factors of correctly using engine.
*Note: Later data modification will not be notified separately.