KTM 620 LC4 Adv Fuel Line Connection
 

Can anyone help me to direct me how those valve are connected via rubber hose for compelete working fuel system...How all three valve is controlled..which to OFF when Fuel is normal and which one to OFF when fuel is reserved...I am having headache with the connection, and when fuel running low...the engine will stop and hard to start.:innocent:

Normal riding: both fuel taps L + R to the ON position and the screw tap closed (in the drawing 1=closed, 2,3,4=ON)
Reserve: same as above, only the screw tap is opened also. Just remember to switch to reserve before the engine dies, else you can have difficulties getting it started.

For the connections, I'll check it tomorrow at the bike, but ik think it's like this:
2 ---4
1 ---3
and in the line 1---3 is a T junction to the pump 5.