Fuel Tank Capicity

[RagnaR]

I have a 1990 GS 500. The specs say that the fuel tank capacity is 20 litres but mine seems to be around 10 litres or a little more.

It's hard for me to tell exactly becuase I had to remove my fuel petcock system due to the fact that the rubber diaphram inside got clogged so I had to put in an inline lawn mower on/off switch as a temp repair. So I can't run my bike to reserve as I have no reserve. Prior to this my bike kept dieing after 5 mins of riding....

But when the tank seems near empty i fill up and always about 10 litres fills it up....

Either 10 litres is hiding somewhere in the bottom of my tank or my tank isn't a 20 litre tank...

Any ideas?

Also, i seem to be doing 300km for that 10 litres. Is that ok fuel consumption?

[Manix]

Prior to 2002 the fuel tank was 17 liters. After that it was increased to 20. Could be wrong about the year but your tank is 17 liters for sure.