Finally got around to fixing the tach cable leak where it goes
into the cylinder head.
You have to dig out the old seal with a jewlers screwdriver or
something else sharp and pointy.
Below is the link to the fiche.
It's item 19 make sure you don't get #18 instead.
09289-05002 OIL SEAL $5.59 from my dealer
He had it in stock if you believe that.
http://www.mrcycles.com/fiche_section_detail.asp