I have changed fork seals before but on British bikes. From your comments and the drawings it looks like a similar job. I have a long T bar I made a few years ago which may help but it has to come apart first.

I'll give it a go.

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When I was a kid I got a rucking for getting dirty. When I met my misses she liked me to get dirty. Now I'm old I get a rucking for getting dirty. Can't win!