The Cap Bolt is a complete Yamaha Part, you may have to 'bodge' something up to get you back to civilisation.


As for Fork Oil, from the workshop manual ->

Front fork leg oil level (from the top of the inner tube, with the inner tube fully compressed and without the fork spring) 145.0 mm (5.70inch)

Hope this helps

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Never underestimate the power of stupid people in large groups.