| 摘要 |
PURPOSE:To permit to release decompression at low rotating area and return the deompression in high rotating area by method wherein an adjust weight, provided at the other side of a decompression weight, is turned reversely to change a returning spring into the same having relatively strong spring force. CONSTITUTION:The decompression weight 10 is inclined outwardly against a spring 12 at the lower rotation of 600rmp by a speed increase upon starting the engine 1 and a cam 8 is pivoted to the inoperative side thereof in accordance with the inclination, thus, the decompression is released. Next, when the speed of engine is increased successively to 1,600rpm or more to enter into a practical rotation area, the adjust cam 13 is reversed to switch the spring 12 into a larger spring strength while the decompression weight 10 is pulled by the spring and is inclined inwardly at high rotating area of 1,200rpm, the cam 8 is returned to the operative side thereof in accordance the inclination and decompression is restored. Next, the speed is reduced further, the weight is inclined inwardly further to operate a reset arm 16 and the weight 13 is returned from the reversed position thereof so as to be ready for next operation. |
