It sounds like its the same as the 125 gauze filter,undo the 24 mm nut, draw out the gauze and wash in petrol check for bits and swarf,let it dry and replace,easy peasy,
reference to get a real bike i presume he means a good ole british machine,why come on this forum to take the piss!!!
when people are asking for help we are all on to wheels
hope the info helps