The fuel line filter is in the stove's fuel tube adapter; this is the brass tube that goes into the fuel pump. To remove the filter, take a safety pin and push the sharp point through the middle of the filter. Carefully pry the filter out and discard it. To install a new filter, place the filter on a hard surface such as a table top, push the fuel tube adapter straight down onto the filter so that the filter is inserted flush with the end of the fuel tube adapter. It is normal for a small amount of plastic from the filter to be shaved off as the filter is installed; simply rub or cut off the excess material.
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