Combines Fuel Tank leak on F2

Are you running a straw chopperIJ

Be sure that your vent is not plugged causing ends of tank to flex in and out.

Yes.

Check chopper for bad bearings or out of balance knives. If it isn't balanced right, the vibration could be cracking your tank. Also check the separator hood where it meets the rest of the combine for cracks.

Get some stuff designed to stop fuel leaks. I am sure the tank is too nasty with fuel for the JB to work right. Auto parts store or dealer should have something like this. Fuel Tank Repair Kit by Permatex SKU: 3214673 For quick, permanent repairs to leaks in all types of metal fuel tanks including portable or car metal fuel tanks without welding. Repairs cracks up to 4"l and holes up to 3_8" diameter for cars, light trucks, and commercial vehicles. Complete kit include s everything needed for repair and easy-to-follow instructions. Fast curing, can make repairs in 30 minutes. NOT FOR USE ON PlASTIC TANKS. - Factory: Permatex Model: 09101 UPC Code: 686226091017 Estimated Shipping Weight: 0.37 lbs. includes some packing.