Scale the piston mechanism and link it to the .sldblk file.
In the FeatureManager design tree, select Piston Mechanism-1, right-click and select Edit Block.
In the graphics area, drag the piston mechanism so it is adjacent to the central arm.
Piston Mechanism-1 is too small relative to the rest of the model and needs scaling.

In the PropertyManager:
Under
Parameters, set Scale
to 1.4.
Click Browse, select piston_mechanism.sldblk, and click Open.
Under Definition, select Link to File.
Click
.