I have a 2002 single spark r1150gs. It now has 74K on it and I decided to change the fuel filter (probably no need as I haven't been using it in any areas with dodgy fuel!) I've done this twice before at 24K and 48k with no issues. I took the flange of the tank disconnected the overflow hoses and took the pump and filter out of the tank. Replaced the filter put about 10ltr of fuel in the tank.....nothing on the fuel guage. Put in another five litres.....nothing. Drained the tank again and removed the flange. Checked the float was free to move. Put the tank back and put the fuel back in....still nothing. The little tabs on the tank sender seem to be contacting the strip ok. Anyone any Idea what I look at next? The low fuel warning light still works.