Kubota L6060HSTC Stalling

[havetosk1]

Hello, after having my tractor towed to the the local Kubota dealer The issue was diagnosed to two hoses being clogged with crud, not sure what crud means but it seems to be working now and the next time it snows I will know more. The part numbers replaced are TD350-42642 and T3680-42632. Hopefully this helps others out there since about 12 people that the local dealership knows of with L6060 have this issue, BTW not covered under warranty even though this has been happening since the tractor was six months old.

 

[hkerr6217]

New to this forum. I have been chasing a stalling issue on my L4060HSTC for about a year and a half and believe I may have found the issue. Yesterday the tractor stalled and I usually check the separator to see if it is full immediately after the tractor stalls. It was about half full. I attached a length of fuel hose directly to the hose after the separator and stuck the other end directly into the tank. This got me going and I headed back to the shop. Hooked everything back up, tractor stalled again. Attached a hose to the inlet side of the separator and into the tank, separator filled about 1/3, tractor would not start. At this point I thought the separator was clogged so I removed it and cleaned what I could. Same issues again and this all pinted to the separator. Depending on your serial#, the older models have a separator with the inlet and outlet that are simply pressed into the housing. I found both to be a bit loose and figured the pump was sucking air so I tapped them back into the housing. This did not work, but had me convinced I was still sucking air intermittently and tractor would stall and sometimes restart. Again, I would always look at the separator to check the fuel level. Yesterday, I noticed the o ring that seals the plastic cup to the housing was missing. I found an o ring that was close, stretched in on and that separator filled in a few seconds when I turned the key on. Tractor started right up - so far all is well. i am guessing that sometimes air was pulled in instead of fuel. Yesterday it was about 15 degrees and metal or plastic can shrink a bit. Maybe this caused the problem. Time will tell. I have ordered the correct o ring and will install it tomorrow. Messicks has drawings that have helped me a few times with other issues and this was a help again. I have taken the bowl off before and can only assume the o ring fell out or off or whatever and I did not notice. Since the pump pulls fuel, it never leaked because of no pressure and the pump runs a few seconds after the engine is shut down. No drip or leaks. Bottom line is trouble shooting - bypass the separator, run a line into the tank where you add fuel. Do this before the separator and then after it. Air is easier to suck in than fuel. Make sure that o ring is in place.....! I plan on running the tractor today for a few hours using a wood chipper, so this will be a good test.

 

[North Idaho Wolfman]

New to this forum. I have been chasing a stalling issue on my L4060HSTC for about a year and a half and believe I may have found the issue. Yesterday the tractor stalled and I usually check the separator to see if it is full immediately after the tractor stalls. It was about half full. I attached a length of fuel hose directly to the hose after the separator and stuck the other end directly into the tank. This got me going and I headed back to the shop. Hooked everything back up, tractor stalled again. Attached a hose to the inlet side of the separator and into the tank, separator filled about 1/3, tractor would not start. At this point I thought the separator was clogged so I removed it and cleaned what I could. Same issues again and this all pinted to the separator. Depending on your serial#, the older models have a separator with the inlet and outlet that are simply pressed into the housing. I found both to be a bit loose and figured the pump was sucking air so I tapped them back into the housing. This did not work, but had me convinced I was still sucking air intermittently and tractor would stall and sometimes restart. Again, I would always look at the separator to check the fuel level. Yesterday, I noticed the o ring that seals the plastic cup to the housing was missing. I found an o ring that was close, stretched in on and that separator filled in a few seconds when I turned the key on. Tractor started right up - so far all is well. i am guessing that sometimes air was pulled in instead of fuel. Yesterday it was about 15 degrees and metal or plastic can shrink a bit. Maybe this caused the problem. Time will tell. I have ordered the correct o ring and will install it tomorrow. Messicks has drawings that have helped me a few times with other issues and this was a help again. I have taken the bowl off before and can only assume the o ring fell out or off or whatever and I did not notice. Since the pump pulls fuel, it never leaked because of no pressure and the pump runs a few seconds after the engine is shut down. No drip or leaks. Bottom line is trouble shooting - bypass the separator, run a line into the tank where you add fuel. Do this before the separator and then after it. Air is easier to suck in than fuel. Make sure that o ring is in place.....! I plan on running the tractor today for a few hours using a wood chipper, so this will be a good test.

Safer method is to pull fuel from a know clean container, putting a line into a tank can suck water in that tank then your in for a real expensive repair.