Unscrew the pin that attaches it to the cylinder head.
To remove it as shown in the figure it is necessary to dismount the camshaft. It could also be removed from the accelerator box side by unscrewing the torque gearing device.
Before reassembling it, check value A (45 to 46 mm) and the parallelism of the two levels B that must not exceed 0.05 mm.
Note: There are 5 different types of regulator springs C. These change according to the engine adjustment: standard spring for 3,600 rpm, for 3,000 rpm, for 2,400 to 2,600 rpm, for 1,800 rpm and for 1,500 rpm.
