Recommendation:
cyborg implies mechanical
Reasoning:
By definition, a cyborg is partly robotic, which is mechanical. (Robot already implies mechanical.)
Updated by RedOctober
Topic: Tag Implication: Cyborg -> Mechanical
Posted under Tag Alias and Implication Suggestions
No. Cyborgs may have computer implants, which we generally don't think of as mechanical, if it's simple computer processors and maybe some blinky LED's on the head. That's nothing but semiconductor circuitry, which I generally don't call "mechanical," rather "electrical."
By definition, a cyborg is "a being with both biological and artificial (electronic, mechanical, or robotic) parts."
Updated by anonymous