just done it on my flymo strimmer ..its really easy ...all you do is cut the new plastic tube to a sharp point so that you can feed it thru the small hole from the petrol tank .make sure you connect the filter to the end that will end up in the tank .when the pipe is visible thru the bottom of the the tank pull it thru with a pair of snipe nosed (pointy pliers) and attach to the carburetor ...really easy
chris farrow, June 2013