Z900 (Z1) Guts Maintenance, Carburettor Maintenance, and More

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Let’s convert the 630 to a 530 on an outer diameter basis.

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Lately Sunstar has been marking everything with the math laid out, which makes it really easy to understand. Fantastic.

 

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If the final ratio isn’t close to the current setup or a bit more fun—something you can play with a little—it gets tough, so I’m torn about it.
What if they ask for a longer ratio? What if they ask for a shorter one? I end up worrying about it on my own for tens of minutes.

 

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It’s changed from bushings to needle roller and thrust bearings.
Sometimes it’s hard to confirm bearing part numbers—is it a 0? A 5? A 6? I’m fine now since I’m not dealing with presbyopia yet, but when it starts, it’ll be a double whammy.

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When you can remove it with a puller, the work progresses smoothly and it’s a real help.
A sliding hammer is one of those tools I try to avoid using whenever possible. That confirms everything.

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There’s no 14-10 dummy rear suspension, so let’s make one while we’re at it.
Having a dummy is a really efficient tool when doing rear suspension OH or when disassembling the rear.
I’ll do the bottom machining with a pipe notcher-style milling machine.

 

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This time I went with adjustment M6. The degreasing wasn’t thorough enough and the prep work was sloppy—I recognize that as a tool issue—so the finish is disappointing and I regret it.
Well, it works, so…

I’ll move forward once all the parts are in.

 

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