Most of the gensets I have worked on, the fittings on the fuel lines can be removed and reused. The 15 ft fuel lines that come with the gen sets for aux fuel cans are the only one that I have seen with crimped on fittings. The fuel lines from the tank to pump,pump to pump, etc etc can be reused unless you have a line that is crimped. Take the hose and put the collar in a vise, the collar is the part that goes over the hose, next take a spare jic fitting and screw it into the swivel nut, tighten it down with 2 wrenches just like you would double nut a stud to install. Once tight put the wrench on the the swivel nut and unscrew it out of the collar. Next take a pair of pliers hold the hose and remove the collar,it is a left handed thread, turn it to the right to remove. Now you can reuse the fitting on a new hose. The hose I have on my sets is wire braided line, you must find the same wire braided hose to insure a snug fit when reusing the fittings. Also a cut off wheel is about the only way to get a good clean cut, a hacksaw leaves a really rough end. The hose is standard at most heavy truck parts stores. The working pressure for these lines is upwards of 3,000 psi and way overkill for this application. Parker makes a pushlok hose that will handle 300 psi working pressure and the hose and fittings are much easier to work with, and if I'm not mistaken the fuel system pressures never exceed 10 psi. Hope this helps!!!
