I have never had to look for injector for F-1700. I know it would be pricey from Messick's or NH part store. You need to figure out where the seepage is first. You can start by cleaning the area real well and then start the tractor and see where it comes from. Look at the pic below. The brass fitting (Banjo)with overflow rubber hose is where the excess fuel is returned to the fuel tank. Then you see two more set of retaining nuts. in order to tighten something you need to hold one side of the fitting and then tighten mating fitting, sort of like what pipe fitters/plumbers do.I start with the very bottom nut and try to tighten it just a wee bit to see if it moves or tighten.Clockwise tightens it. I would then hold on to the first bottom nut and tighten the one above it. I would repeat that with the banjo while holding on to second blue nut if needed. I would caution not to use a lot of force. Hopefully that will solve it.if the washers are leaking then the last thing is to disassemble taking care to take pics so you know how it went together. The injector spring will be quite bouncy. The sealing washers acts like a Crush washer. You might be able to duplicate the washer or buy OEM. Soft cupper washers shuld work as they seal good by being slightly crushed.i hope you do not need to disassemble the injector. At the end if the leak is a tsp in a month or so then you can call it workable and just live with it.
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