David Lahey wrote:if it's this one, it looks like a TY175JC speedo which is much bigger and mounted up near the bars
http://www.ebay.com.au/itm/Yamaha-TY175 ... Swc49Y6ui9
That is what I have in my box of bits.
Also other TY175C and JC bits. I will get some pictures of what is there when I get back from the Glenmaggie Easter pilgrimage.