I posted a similar question on 22nd Feb. If you go back a few pages you will find the suggested route. It is a bit "tight" but works fine on my B40. I had seen someone elses bike where they had made a bracket to support the cable- the bracket fitted to the crankcase. I had thought about that modification but it has not been needed. Also when fitting the new cable, fit the nipple into the clutch end first while there is a bit of slack!