My karcher 4.0/32 Pe Cage cannot take gravity fed water. Can I bypass the float tank assembly? Would there be any reprecussions relating to the line going back to the burner? How can I solve the problem without disconnecting the float tank or raising the water tank to a point beyond the centre of garvity for ther cube van I have it in?

Check to see if the carb is gravity fed or has a fuel pump. If it gravity fed then trace the line back to the tank checking for an obstruction. Make sure there is no obstruction in the tank. Flush the tank and lines. If it has a fuel pump, make sure it is working properly. If fuel is at the carb. then you may have to clean the carb and adjust the float.

Follow the existing line. If not there, it is gravity fed so the upper end is the tank. Usually it goes like this - tank, petcock, line, filter, line, carburetor, intake valves.

no you don't need a fuel pump if gravity fed.

1.) Check to make sure that the water shut-off valve is all the way open (the water valve a.k.a. the shut-off valve is located behind the toilet near the wall or the floor, depending upon installation placement.) The water supply line attaches to it and feeds up into the refill valve assembly inside the toilet tank.
2.) Check the float assembly or the refill valve assembly, make sure it hasn't bound up by getting caught on another part inside the tank.
3.) Check the water level to make sure that it sits about 1 inch below the overflow tube in the middle of the tank. If the water is lower, adjust the float inside the tank to raise the water level. For models that have a ball float, turn the screw on top of the fill valve clockwise to raise the water level. For models that contain a cylinder float valve attached to the fill valve, squeeze the clip on the side of the float and pull the float up until the water reaches the desired level.

Carb. engines on bikes are usually gravity fed. Just follow the fuel line from the tank to see where it ids distributed to your carbs.
Sticky float valves and bad diaphragms will cause the carb to flood out. Ethanol gas could be the problem where it's eating away at the rubber parts. I suggest if you're not a bike mechanic, then get it to the shop where your carbs can be rebuilt using ethanol safe components and have them synchronized. Your bike will run better than it ever has.

Hi, no that is not the problem. The fuel is getting in through the inlet valve but it is caused by the needle and float in the carby not holding the gravity fed fuel pressure. It can be caused by a worn needle, incorrect float height or debris under the needle. Basically remove the carby,remove the float and needle, blow it out, check or replace the needle and make sure that when the needle is closed the float is sitting parallel with the carby body(holding the carby upside down with the needle and float assembled is the simplest way to check this). Also fitting an inline fuel tap will prevent this happening in future as the fuel leaks mainly when the mower is parked up. Hope this helps, regards Phil.

Check the filter screen on the fuel tap for blockage etc. Also check the tap for anything that may have lodged in it and blocking it. Check the fuel pipe too.

If you can lift the float arm and it stops the water flow into the tank then the float arm needs to be adjusted. The proper adjustment will stop the water flow when the level is between 3/4" and 1" from the top of the overflow tube. The newer style valves have an adjustment screw that is easily located and can be adjusted without any dis-assembly.

First I would disconnect the supply line and see if I have water to that point. If so, than take apart or replace the ballcock or float valve. If not continue to trace problem backward untill found. Hope this helps.

more than likely stuck float or something caught in the needle seat valve area