1. taken当然是take的过去分词.
to be taken from my home是不定式做宾语补足语,即常用结构：及物动词(permit) + 宾语(my lawn mower) + 宾语补足语(to be taken from my home).
此结构属于permit sb/sth to do sth的变化形式.
这个不好说什么时态问题,只能说它是被动语态的不定式结构to be done而已.
2. 被动语态结构当然是“be + 过去分词”,而不是“be + 过去式”.
3. 给楼主举个类似例句.
1）want sb/sth to do sth：I want you to help me.
2) want sb/sth to be done: I want myself to be helped by you.
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