Question about John Deere Ar50041 Diesel Fuel Filter 3020 4030 4440 ()
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Posted on Jan 02, 2017
I have a john deere 420 rider. It would surge at a higher speed. It is a hydrostatic and there were 2 bolts on the transmission that were loose. now it runs beautifully smooth,
Posted on May 04, 2009
Fuel line is pinched between fuel tank and frame.You should see the line coming down the rear side of tank,grab it and see if its free to move.
Posted on Nov 14, 2009
SOURCE: John Deere will not start.
If you have gas running down to the carberator ( take the fuel line off and make sure there is gas running to it or there may be a screen or filter plugged by the tank or on the way to the carb) if there is gas there the problem lies in the carb itself. If you have some mechanical ability you should be all right as it is not rocket science. If you are comfortable with taking the carb apart the first thing i would check is the needle vavle. With the carb apart you will see a big brass looking thing this is the float, right above that is the neddle valve, that is the first place they seem to stick on me. Move the float up and down if the neddle above it doesn't move or sticks there is your problem. Spray it with carb cleaner and see if it moves freely. You may have to dismantle the carb to get it to work freely. If it won't buy a carb kit and install all the new gaskets needle valves and jets ( this is a very good ideal any how) Also make sure any little ports in the carb are open ( in the bottom of the carb there may be tiny little holes that are plugged) find a very small wire to clean them with and also make sure when you are done you can spray carb cleaner thru them. This is why they have a small straw on the can with it ( watch your eyes and wear safety glasses as you never know where it will spray out from) That stuff will dry your skin out fast so don't get it in your eyes and you may want to wear rubber gloves. Also be very careful when putting back together as there are little pieces that like to slide around and fall out or may get bent even worse you don't want them in your motor. Also try to count every screw you turn as these are jets and you will want to put them back to the place they were set at cause it's a pain to get them set right by adjusting them later. Do not force anything putting it back as you may bend the jets or float and you will have to take it apart again and replace them as well. Take your time and be patient and you will be just fine
Posted on May 08, 2010
Testimonial: "thanks...you gave me encouragement to give it a try. I took off the shroud, air cleaner box and couldn't take off the carb as there are no heads on the four bolts that hold it on. Looks like it was designed not to be removed? I took off an inspection plate on top of the carb and cleaned all of the channels and ports within with carb cleaner and compressed air...still no gas flowing thru carb...unless I force with compressed air. Any other thoughts? It is a twin cylinder OHV B/S. Thank you. "
John Deere and it's lack of engineers, located the fuel tank below the engine/filter assembly, so it won't gravity feed. The little pump in the top of the fuel filter is worthless. The easy fix is to install an inline diesel fuel pump with a overpressure line off a blank fitting from the fuel filter, which will allow excess pressured fuel to flow back to the tank. What I did was install a fitting with a fuel hose about 2 feet long that has a lawn mower fuel cut off, with a section of hose after it, that can be plugged, when not used. Anytime fuel prime is lost to the filter, then it's a major effort to get it back. This is the cheap way. If you disconnect your fuel line the fuel flows all the way back to the tank, however I believe there is a check valve located underneath the tractor, before the tank, which keeps it from going all the way back. Anyway, I use a large cc syringe to pull fuel up to the filter. After each pull, I close the lawn mower shut off to keep the progress. Empty the syringe and then open the valve and pull some more. Once you have plenty of fuel to the filter, then I close the red fuel shutoff on the back of the fuel filter (closes the line to the tank). Then I push some fuel with the syringe toward the injector pump, while cranking the engine. At this point you don't want it to start, because you will pull all the fuel from the filter, because the red shut off is closed on the back of the filter. After only one or two "pushes" , then close off the lawn mower shut off, open the red shut off on the back of the filter, and crank. Mine usually starts about 5-15 seconds from starting to crank. DON'T CRANK TOO LONG, THE BOOK WARNS ABOUT OVERHEATING THE STARTER. What stupid engineers designed this? Hope this helps. As a side note the fuel hose off the tank is one size, and then it goes through the check valve and changes to a smaller diameter, to go to the filter.
Posted on Sep 25, 2010
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