Final answer:
The key limitation of a manual hydraulic tool is that it tends to operate more slowly compared to an automatic hydraulic tool due to the necessity of human intervention during operation.
Step-by-step explanation:
The limitation of a manual hydraulic tool among the provided options is that it tends to operate slowly. The manual hydraulic tools leverage the hydraulic and mechanical lever systems as seen in heavy machinery like backhoes, as depicted in Figures 11.48 and 11.42. The slowness in operation is due to the human intervention needed for tool operation. It's important to note that while they may be slower in comparison to automatic hydraulic tools, they offer the benefit of better control over the tool operation.
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