I just noticed that you have the Brinly Spring Assist. Don't see very many of those!
I hope the repairman there is old enough to actually know what it is from!
I also find it useful to take photos before (and during) tearing into it, to help my memory when putting it back together.First step is to download the engine service manual if you haven't already.
Read it 2 or 3 times, get familiar with the steps and "bag & tag" the small parts with the screws and a description of where they came from. I like the "sandwich bags" that click and seal myself..
Most importantly, take your time / have fun / and ask any questions along the way!
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