I've finally sourced a good quality, in-line fuel tap & thought I'd post KC to show the results. It always worried me that I couldn't shut off the fuel supply whenever I wanted to changed a filter or work on the engine. With a full-ish tank of fuel, there's quite a head of pressure in the fuel lines & whenever I disconnected a fuel line, I inevitably had fuel running everywhere. I've not wanted to crush the fuel line with vise grips, for fear of damaging the line permanently & driving something up the bore might put rubbish in the line.......so, after a lot of searching, I found this solution. It's cheap, easy & quick to install. It took about 20 minutes start to finish once I had my tools sorted out & a plan of attack in mind. This is the fuel tap - cost -$ 22.00. These are the tools I used: 2 x small hose clamps,1 x blade screwdriver,(to suit clamps),1 x "quick-clamp",1 x pair of good quality side-cutters. First, I disconnected the battery - just in case.... Then I clamped of the fuel line about 2-3 inches from the fuel tank using the "quick-clamp".I used this type of clamp as they have a large surface area for clamping pressure so less likely to damage the fuel line: Then, using the side-cutters-(& holding my breath that the quick-clamp worked)-cut the fuel line.