In this, our final installment on this particular 221, we will dissect and reassemble the upper thread tension unit. We've seen this before with the 201, it's pretty much the same, but we'll look at it once again.

00:00 Intro and Titles
00:31 Disassembly
03:08 Clean and reassemble the stack
08:00 Final assembly and adjustments
10:25 Final thoughts

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