Engine regulator for a power saw

In an engine regulator for a power saw or the like wherein said engine is provided with a throttle valve, a handle piece for said saw having a finger grip on one side thereof, said finger grip being mechanically connected to said throttle valve of the engine, spring biased means for said finger grip for maintaining said throttle valve in an idle position, said handle being provided with a middle hand grip arranged to maintain said finger grip in its idle position when not actuated, and to release said finger grip when actuated into a depressed position, a thumb grip arranged in front of said middle hand grip to maintain said finger grip in a middle position when said thumb grip is actuated, the improvement comprising:

• a first hooking member on one part of said middle hand grip and thumb grip, a second hooking member on another part of said hand grip and spaced from said first hooking member, said first and second hooking members being in a common element of said middle hand grip, said middle hand grip including a press knob on said thumb grip, one of said hooking members having a forwardly directed dog and the other of said hooking members being positioned inside said first hooking member and constituting a backwardly directed dog, and a projection on said finger grip member moving in the open space between said first and second hooking members in which said dogs are selectively enterable by said projection upon pressing said thumb grip down or permitting the middle hand grip to move upwardly.