Sand,
I'm in the process of doing this right now. Has been a bit of a pain. The line appears to be about 13' long and the orginal on mine was a Morse cable. You can't find this cable anymore and the next closest replacement is a Teleflex utility cable. You want the "hub" version of this rather than the "no hub" version (don't ask how I know this or how much shipping was back to where I bought it). You also will need an adapter to attach the line to your Yanmar engine. Luckily they sell all of this here at the SBO shop. Just buy it there... save you a lot of headaches. I'm sure the cable they sell you is in fact a Teleflex "hub" one.
Take care,
-Levin