Fixing Yanmar 2GM20 injection pump leak

There's lots of good Yanmar service videos on RUclips, but about this particular job I did not found any. So, I recorded my own attempt to fix the injection pump leak on my Yanmar 2GM20(F) by changing the delivery valve holder o-rings. The job was actually simpler than I initially feared, biggest issue being the tight work space around the pump. Hopefully this video will be helpful to you!
Most of the knowledge presented on this video comes from the forum threads at
forums.ybw.com/threads/yanmar...
and
forums.sailboatowners.com/thr...
The Yanmar part number for the o-ring is 124550-51370.
ps. If I have understood correctly, it could have been also possible to change the delivery valve copper gaskets without taking the pump out. As my engine was running fine otherwise, I saw no reason to do that ("If it ain't broke, don't fix it").