To provide a fuel metering device for a spark ignition engine requiring no detaching/attaching of a governor lever 3 from/to an engine wall 1 and no readjusting of an output restriction bolt 8 because of no displacement in an assembled state of the governor lever 3 in order to simplify maintenance work of a carburetor 4.
In the fuel metering device for the spark ignition engine, the carburetor 4 is mounted to the engine wall 1 by a pair of fastening bolts 10, 11. A stud bolt is used for one fastening bolt 10 between a couple of the fastening bolts 10, 11, and a headed bolt is used for the other fastening bolt 11. If the carburetor 4 is rotated 14 with the stud bolt 10 as a center, the bent part 9 of a connecting rod 6 can be engaged and disengaged with the governor lever 3 mounted to the engine wall 1.
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