I was going to get with it last summer, but life intervened...
Anyway, I'm about set to re-engineer the fuel delivery system on the L2500.
What motivated me was what the fuel filter was filled with, last time I changed it.
Sort of an emulsifed mass of hydrocarbon and biologic goo,
The fuel filter should NOT be the place that is planned for that (inevitable) stuff to accumulate!
I plan to leave the factory fuel filter where it is, but I'm going to add two features upstream of it on the fuel line:
- Shutoff valve
- Sediment bowl/filter
I haven't spec-ed the shut-off valve yet, but it needs to have 3 ports:
-supply (from the tank)
-outlet to engine
-outlet to ground
...and, 3 positions:
- supply line shut-off
- outlet to engine open
- outlet to ground open
I'll put the shut-off valve on the L side of the tractor as close as I can to the tank. The idea is to be able to shut off the tank between uses, and then be able to drain directly from the tank to the ground before starting. Kinda like with airplane wing tanks. In that location, it will be very accessible.
I have the Racor 120 sediment bowl system:
I'll put this unit upstream of the factory fuel fliter. The fuel drops straight down to the bottom of the clear bowl, and then percolates up through the 10-micron R12 filter. For scale, the two mounting holes at the top are 1-1/4" apart.
I'm using the Baldwin BF940 filter in the factory receptacle which is also a 10-micron filter.
Probably overkill having two fuel filters inline, but what's nice about the Racor is that you can visualize the filter element material without taking anything apart. And of course, drain any water residue or sediment from the bowl. And, it looks to be easier to not mess with the factory setup.
Should be all but bulletproof.
I often go months between uses of the L2500.
Nothing worse than planning some work and then first having to spend hours getting fuel flowing again, especially in winter.
-Paul