It's not too difficult. Loosen the rubber hoses on either side of the carb., remove the airbox, pull out the carb., remove the gas line, unscrew the top of the carb., and carefully lift out the retaining clip in the bottom of the slide. Be sure to note where everything is located (helps to have a Snidal guide or Parts manual). Don't let the spring fly off, then work the old cable out of the slide, and get it out of the way. Route the new cable from the handle end, then re-assemble. Getting the cable end into the slide while compressing the spring, and getting the retaining clip back in can be a little tricky, but Buddhist-styled patience goes a long way when dealing with an Enfield! Be sure to get the slide back in the way it came out, and that it slides. Again, patience is the key. Get everything together, except for re-installing the airbox, then visually check the slide operation . It should drop with a low "thunk" when you release the handle. If not, go back and re-adjust 'til it does.