ZD1211 Fuel Filter
- Thread starter RjCorazza
- Start date
arto98607
Veteran Member
- Joined
- Aug 27, 2014
- Messages
- 1,406
- Location
- Southwest WA
- Tractor
- Kubota F3060, Grasshopper 721D, Ford 1310, John Deere 440 ICD, John Deere 300 & 430
Hopefully that took care of it, if not there should be 10 or 12 micron replacement filters.
I think my F had originally 50 micron filters from the factory, which I did not like much...
I think my F had originally 50 micron filters from the factory, which I did not like much...
OP
RjCorazza
Elite Member
It's running fine after 10 hours of mowing with the secondary lift pump. I never thought of going to a 10u filter, I suspect that would have worked.
re: OEM inline filters... I arrived at the same conclusion that the Kubota filters are 50u, but Kubota won't confirm.
re: OEM inline filters... I arrived at the same conclusion that the Kubota filters are 50u, but Kubota won't confirm.
iamanerd2
New member
- Joined
- Oct 9, 2024
- Messages
- 4
- Tractor
- 2024 ls mt357 hst kubota zd1211
Do have a parts list so I can do this to mine please
OP
RjCorazza
Elite Member
I have since returned the fuel system to stock because of (apparently) unrelated unequal fuel tank drawing issues.
Racor 215r2 filter
5/16" fuel line
Amazon 12v inline fuel pump
1/4" npt (?) X 5/16 Barb fittings
Maybe a 5/16 double male barb
Zip ties
iamanerd2
New member
- Joined
- Oct 9, 2024
- Messages
- 4
- Tractor
- 2024 ls mt357 hst kubota zd1211
I know the check valves help with inclines and prevent overfilling one tank. Cleaning the vent cap holes helps with draw as well as shutoff fully open. Sometimes shutting on side off when almost empty an then running one side till almost empty the fill both sides and turn back on both and bleed the air out at the injector line to make sure steady flow and reassemble. I would think just removing 2 filters putting in a 10 to 12u filter with your setup shouldn't really affect equalization. What all did u try to fix it? So I can see if I really should go down that road lol.
iamanerd2
New member
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- Oct 9, 2024
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- Tractor
- 2024 ls mt357 hst kubota zd1211
Also since u went back would u be interested in selling the parts u got?
iamanerd2
New member
- Joined
- Oct 9, 2024
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- 4
- Tractor
- 2024 ls mt357 hst kubota zd1211
Also im sure u did this but did u make sure check valves were in correctly?
OP
RjCorazza
Elite Member
I'm certain that the Racor addition had nothing to do with my current equalization problem. It's all back to stock now, still not drawing off of the right tank with both fuel valves open.
What I have done : (no particular order)
- Blew out all lines, plus return
- Replaced aftermarket filters with oem
- Drained and flushed tanks (NOTHING found)
- Confirmed check valves working, and replaced anyway
- Replaced most fuel supply line
- Removed tank shut-off valves, Confirmed operation, cleaned
- Confirmed no dirt in tanks
- Confirmed tank caps are venting, clean (there has never been a vacuum detected in either tank)
- Confirmed fuel pump working, good fuel flow at EVERY point in the system (ie: good flow at bare tank, after shut-off valves, after tank filter, before lift pump, after lift pump, after final filter, at injectors.
What happens:
Right now, with both tank valves open 90% + of the fuel comes from the left tank. The left tank filter is always 1/2 full, and the right tank filter is always full. No amount of bleeding will fill the left tank filter. The mower will run fine off of each individual tank by shutting off the other fuel valve.
After my initial troubleshooting listed above the mower ran great for 30 hours, with fuel equally drawing and both filters full. Now it's back to the state of not drawing from the right tank.
The only fuel component before the injector pump I haven't looked at is the crossover equalization tube, but that appears to be simply a pipe connecting the tops of the two tanks.
I'm keeping the Racor for future use, but there are inexpensive knock-offs on the market that get good reviews here on TBN.
