I haven't been able to find anything posted on this subject but if I missed it maybe someone can direct me to it.
BUT, I have more than one mower with gas tanks that have an opening so you can see the gas level thru an opening sight glass. (actually the plastic gas tank) Those things get discolored and one cannot see the gas level at all. Anyone know of a way to clean them so you can see the gas level again? I have tried polishing the opening like you do headlight lenses but that did not work. I think this may be stain on the inside but what will clean it? I am considering removing the tank and trying bleach to see if that helps. My little D110 is only a few years old and already stained up. I also have two ZTR mowers of a different brand with the same problem. If you get it turned where the sun hits it just right you can see it just a little but running out of gas is the pits. Anyone got any ideas?