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Toro model 51970a diagrams

CARBURETOR PARTS BREAKDOWN AND FUEL LINE ROUTING WITH PRIMER BULB

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 211 Answers

SOURCE: leaf blower will not continue running unless primer bulb is pushed intermittently

Hi

Priming the engine(put some gas in the sparkplug hole)..If.Start the engine.If only the gas from the cilinder is burned change the lines prom primer bulb.

best regards savumihai71

Posted on Dec 05, 2008

#1 Taper
  • 1040 Answers

SOURCE: Primer bulb not filling

Yes, I think the gas cap may be clogged. The gas cap must be able to breath, otherwise this vacuum will occur. Try starting your trimmer and when it starts to choke out, loosen the gas cap. It should get air back in the tank, then and keep running. If this works, clear the hole in the gas cap, or purchase a new one.

Jim

Posted on May 25, 2009

  • 1 Answer

SOURCE: craftsman leaf blower, primer bulb will not return, won't start

primer bulb on weedeater will not return to normal or **** gas into it. new primer bulb. lines to tank have been repalce and can blow through them but primer bulb will not push air into tank

Posted on Aug 21, 2009

Dolfoff
  • 148 Answers

SOURCE: I am replacing the fuel tank assy and purge bulb

The order of fuel travel should be:
Fuel filter to fuel hose to Carb's Fuel Supply nipple. (On the main body of the carb)
Primer Plate Nipple on carb to fuel hose to Suction Nipple on Primer Bulb. (It must pull fuel thru the carb, not push)
Pressure Nipple on Primer Bulb to fuel hose to Fuel Tank Return hose.

When correctly installed, the fuel will be PRESSED into the fuel tank via the return hose when primer is pressed in . . . and SUCTIONED out of the tank and into the Carburetor when primer in released.

Hope this helps,
Dolf-

Posted on Oct 16, 2009

Testimonial: "Very clear explanation. Thanks!"

  • 1 Answer

SOURCE: Troy-Bilt weed eater, Model TB90BC, had rotten

Prime and watch the fuel move up to the carb. This is the fuel line and it should be long. Make sure it goes to the bottom of the fuel tank.

Posted on May 07, 2010

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Gas edger Model 358.773100 the fuel lines were cut. looking for diagram to repair


They don't really have fuel line routing diagrams available. This is even true on the Sears website. What they do have is the machine breakdown diagrams with all the parts listed and pricing for all available parts. I can give you fuel line instructions for a 32cc trimmer. I see that your model is a 24cc 2-stroke engine. This may point you in the right direction.
The small diameter line out of fuel tank (has filter in-tank on end) connects directly to the side of the carburetor that has the fuel pump....that is the cover without the hole in it. Other larger diameter fuel line out of tank connects to the longer nipple on the external purge/primer bulb. The bulb "pulls" fresh fuel from the fuel tank to the carb and then out of the carb to itself, where it then "pushes" any air/old fuel back into the fuel tank. The remaining larger diameter fuel line in this setup goes from the metering chamber (has cover with writing on it and a vent-hole) side of the carburetor to the smaller nipple on the purge/primer bulb. Again, on the primer bulb, the longer nipple has a line going directly from it to the tank. This is the return line. The shorter nipple on the bub has a line from it going to the metering chamber side of the carb. If the purge/primer bulb is on top of the carb...small line from carb body to small hole in tank with filter. Larger diameter line goes from the bulb on the fuel pump side of the carb to the larger hole in the fuel tank where sometimes the line is held in place with a nylon nipple connector that keeps the line from pulling out of the tank. Otherwise, the line should enter the tank for about 1/2" or so.

Nov 28, 2010 | Craftsman Garden

1 Answer

Need a diagram of fuel gas lines on a 131 poulan


Lots of research has shown a lack of diagrams on fuel line routing. Your carburetor has the purge/primer bulb on top of it. Just to help you understand how it works....the bulb uses a vacuum effect to pull fuel from the tank directly into the carburetor and the check valves in the plate under the bulb (known as the primer base assembly) push any air and old fuel inside the carb back into the fuel tank. On your model, the line inside the tank with the fuel filter on it will come out and go to the carburetor body BELOW the base assembly. The other line coming out of the tank (fuel return line) will go TO the nipple on the base assembly. The lines should be nice and soft and so should the bulb. They all have to be replaced periodically as alcohol, heat and age deteriorate them. Please post back if needed.

Nov 06, 2010 | Poulan/Weed Eater No. Te475 952711797 17"...

1 Answer

Routings of fuel line to Poulan 14 inch chainsaw Model 2025


No drawings or pix, but will try for description--the line from the tank that has the fuel filter is the main fuel source which goes to the upper connection on the carburetor. The lower carburetor connection goes to the intake side of the primer bulb, and the outlet side of the primer goes back into the tank, which has no filter inside the tank. The main problem is determining the correct primer port to connect back to the carburetor. When everything is connected, try priming the carburetor. If fuel fills the bulb, you have everything connected correctly. If nothing happens, try switching the two primer port connections and try to pump fuel again. If still nothing, hook the main supply line from the carburetor over to one of the primer ports and try for fuel again--if still nothing, switch the main supply line to the other primer port and pump again. If still nothing, check for a plugged fuel filter in the tank. If the filter was plugged, then go through the previous procedure again. Make sure to replace the fuel lines with original rubber lines, not plastic. Hope this helps!

Jul 13, 2010 | Poulan 14" Chainsaw

1 Answer

Poulan P3400 Chainsaw Fuel Line Routing


If the saw has a primer bulb, then you require one line from it's output out to the tank return. Another line runs from the carburetor outlet to the primer inlet. Make sure that you use original rubber lines, not plastic replacements. The primer ports are found by trial and error--hook the filtered line directly to one primer port and leave the other port open. If the bulb is in good condition, and correctly connected to fuel, the bulb should fill with fuel after several pumps. If nothing, reverse the port connection at the primer--and pump test again. One of these two connections should allow pumping to occur. When you get pumping, install the tank return line to the empty primer port. Remove the filtered line from the primer and install on the carburetor. A new piece of line runs from the now empty primer port and connects to the output port on the carburetor. If the carburetor lines are correct, you should be able to pump fuel through the carburetor body and out to the primer bulb. If nothing happens, you may need to swap the carburetor lines, and you will likely need to service the carburetor. Hope this helps!

May 25, 2010 | Garden

1 Answer

I need a fuel hose diagram for a stihl model 028 wb chain saw.


Stihl IPLs (exploded parts list) are propriatary, You can request one here: The IPL (exploded parts list) for your saw is the only detail for fuel line routing and it is sketchy at best; components are listed but on multiple illustrations.
http://www.stihlusa.com/contact.php

Typical Fuel System (Primer Bulb and fuel lines may not apply)
http://www.img4free.com/images/Lou98321/fuelsystem.jpg
Fuel Line Replacement by SmallEng.com
http://www.youtube.com/watch?v=JrXpU70Hmi0
  • The hose in the tank with the filter on the free end connects directly to the carburetor input connection.
  • If the saw is equipped with a primer bulb, an output line from the carburetor connects to the suction side of the primer (once the bulb is collapsed it draws fuel from the tank through the carburetor to refill as it inflates).
  • The pressure side of the primer returns displaced fuel to the tank as it is depressed.
Take lots of notes and a few digital photographs to help with reassembly. HTH
Lou

Dec 23, 2009 | Garden

1 Answer

Where can I get a diagram of a poulan 2350 16'' carb diagram ....I took it apart to replace internal hoses and they were dryrotted and broken and I do not know where to reconnect them


Typical Fuel System:
0295cbd.gif Fuel Line Replacement by SmallEng.com
http://www.youtube.com/watch?v=JrXpU70Hmi0
  • The hose in the tank with the filter on the free end connects directly to the carburetor input connection.
  • If the saw is equipped with a primer bulb, an output line from the carburetor connects to the suction side of the primer (once the bulb is collapsed it draws fuel from the tank through the carburetor to refill as it inflates).
  • The pressure side of the primer returns displaced fuel to the tank as it is depressed.
Take lots of notes and a few digital photographs to help with reassembly.

The IPL (exploded parts list) for your saw is the only detail for fuel line routing and it is sketchy at best. Fuel system components are shown but on multiple displays.
Poulan.com
http://www.ordertree.com/modelinfo/POULAN-WEED-EATER/75.59.html
The dash number of your serial number is the type. HTH
Lou

Dec 20, 2009 | Poulan Garden

1 Answer

Fuel line diagram for 358.352160 don't know how to route the fuel lines correctly. Have 2 sizes


It is most likely a Poulan almost all are. The IPL is the only manufacturer supplied fuel system detail, it lists components, part numbers and very little routing detail. and is usually spread over multiple illustrations.
Poulan.com
http://www.ordertree.com/modelinfo/POULAN-WEED-EATER/75.59.html
I think you'll find the short video, a few notes and a typical system most helpful. Any local saw shop can provide replacement hose.
Fuel Line Replacement by SmallEng.com
http://www.youtube.com/watch?v=JrXpU70Hmi0
  • The hose in the tank with the filter on the free end connects directly to the carburetor input connection.
  • If the saw is equipped with a primer bulb, an output line from the carburetor connects to the suction side of the primer (once the bulb is collapsed it draws fuel from the tank through the carburetor to refill as it inflates).
  • The pressure side of the primer returns displaced fuel to the tank as it is depressed.
Take lots of notes and a few digital photographs to help with reassembly.
8af585e.gif
HTH
Lou

Nov 19, 2009 | Garden

2 Answers

I need the fuel line routing or diagram for a Poulan Predator 2150 LE. I have parts list but it does not depict the fuel detail I need.


Jimmy there are no Poulan drawings with fuel system detail worth the ink it takes to print them, but that is all there is.
Fuel Line Replacement by SmallEng.com
http://www.youtube.com/watch?v=JrXpU70Hmi0
Routing runs from fuel tank to carburetor, (if equipped) through carburetor to primer bulb (once compressed bulb draws fuel as it returns to normal) , bulb (as it is compressed) returns displaced to fuel tank. HTH
Lou

Oct 22, 2009 | Poulan Pro 16-Inch 38 cc Anti-Vibration...

1 Answer

Have a 51970A weed wacker that won't run. need scematic for fuel line not in owners manuel


The longest, and sometimes smaller in diameter of the two fuel lines, goes from the carburetor to the bottom of the tank. Leave enough slack in this line so that the filter that attaches to the end will rest comfortably at the bottom of the tank.

The other fuel line goes from the primer bulb to just inside the tank, (about an inch). make sure that you get the right size fuel lines. The plastic coupling goes on the end of this line, inside the tank. This keeps the line from pulling out of the tank.

(HINT): When feeding the lines through the tank holes, cut the lines at an angle. They will feed much easier into the holes. You can than cut them off square, once you know that you have enough to work with.

If you need further assistance, just let me know.

Jim P.

Oct 03, 2009 | Toro Lawn Mower With Toro Power Tools

2 Answers

My Toro 20016 will start but will only run for a minute. If I hold the primer button down all the way it will continue to run but will die if I release. I have cleaned the float and there are no leaks in...


You will need to clean out the jet on the bottom of the carburetor. The fuel is not being sucked in to engine. Check the needle and seat to make sure fuel is flowing in to the carburetor.

Jul 18, 2009 | Toro Lawn Mower With Toro Power Tools

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