4 ms·
Typically there aren't two separate tanks - In one tank there are two tubes at different heights. As the fuel level falls below the height of the "main" tube th
by xkcd-sucks 6y ago
Typically there aren't two separate tanks - In one tank there are two tubes at different heights. As the fuel level falls below the height of the "main" tube the engine sputters, then turning the petcock engages the lower down "reserve" tube which is still below the fuel level. It's more of a warning than a true reserve, and most bikes with an actual fuel gauge don't have a reserve.
- imglorp 6y agoOn bikes like that, there's a reserve-reserve trick sometimes. Sometimes, the tank is an inverted U shape so when the pickup runs dry there's still a little more fuel on the other side of the U. If the bike is light enough, you can stop the bike and lean it way over to pour that last bit over to the pickup side. Might get you another couple miles.