Question about Poulan 38-Inch Steel Deck 15.5 HP Briggs & Stratton I/C Engine With 5 Speed

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There is a tube like electric thing on bottom of carb. that works the flow of gas what is it called

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Anti diesel valve

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Mower won't start


Remove old gas. Remove carb bowl and clean. Ensure float is working, float down gas flow. Float up no gas flow. Use a bread wrap, clean off 1 1/2 in to expose wire. Insert wire in tube from bottom of carb up to behind choke flap. Ensure needle valve moves smoothly when float is moved up & down. Remove plug, should be wet if gas is getting to cylinder. Ensure air filter is clean. Ensure oil has been changed and filled properly. Ensure primer bulb isn't cracked. Pull recoil rope twice half way to prime carb then pull all the way.

May 17, 2014 | Honda Garden

1 Answer

1987 jeep comanche will stay runnning only when spraying carburetor cleaner in carburetor or when you pump throttle rapidly


Hello
It sounds like a glogged fuel filter or throttle body problem. Disconnect gas line at carb get a small jar or can to catch gas, hold gas line in jar and have someone crank engine, If you have good gas flow to carb then Its a throtle body problem, (Throtle body and carb are same thing just in case you did not know)could be electrical or mechanical problem at throttle body, Its usually electrical, fuel flow meter. Hope this helps

Oct 23, 2012 | 1987 Jeep Comanche

1 Answer

My Yamaha ttr 225 is leaking gas from an orange tube at bottom of bike. why? and how do I make it stop?


The tube is over flow from carb. some is normal.if too much carb is flooding. Try cleaning.Depends on your mechanical skills.If not to saavy find some help

Oct 26, 2010 | 2003 Yamaha TT-R 225

1 Answer

Took carb apart and clean then put back together with new gaskets. will not start without starter fluid and only for 2 secs then dies will not start on its on has new spark plug and gas line with fresh...


Lets back up and regroup on the carb work:

Hi and welcome to FixYa. I am Kelly.
This is how to clean the fuel passages in the carb.
Here is what you need to do:

1. Fuel selector off
2. Remove float bowl mounting screws and nut
3. Remove the BRASS Jet / Orifice in the very bottom of the venturi tube inside the pickup tube. (Flat blade screwdriver) Hold the Orifice up to the light. You should see a pinhole. If it is not clear clean the orifice but do not force anything through the hole.
4. Underneath the Orifice there is yet another BRASS tube that you need to remove. (Flat blade screwdriver) Make sure all of the holes in the tube are clear. The tube will be over 2 inches long. Clean it and reinstall it.
5. Reinstall the Orifice.
6. Using a catch fuel container turn on the fuel selector. Fuel should flow at a good rate. GENTLY lift the float assy level and make sure fuel flow shuts off. When you drop the float again fuel should flow.
If you do not have fuel flow at this point the needle and seat will need to be inspected. Fuel selector OFF.
(The following procedure is to be done only if there is no fuel flow with fuel selector on.)
a. Remove the silver float pivot pin retaining screw
b. Drop the Float down (The needle will come off with the float. NOTE the position)
c. Inspect the tapered rubber of the needle If should be pointed. If it is not pointed then the rubber tip is stuck inside the seat.
d. Clean the seat hole ONLY if obstructed. (Easily damaged)
e. FUEL Selector on then off fuel should rapidly flow through the needle seat.
f. Renistall Float and needle making sure to get the pivot / hinge pin installed correctly and reinstall the silver retaining screw.
g. Fuel selector ON. Raise and lower float checking for free movement and fuel flow.

7. If there still is no fuel flow at this point remove the fuel hose from the carb and check fuel flow. If no flow check that gas tank exit hole, fuel filter (if installed) and the selector valve assy for obstructions. Reassemble connections.

FUEL FLOW IS GOOD

8. BEFORE you install the float bowl inspect the bowl nut. There are 2 holes in the side of the nut where it screws in to the bottom of the carb that must be clear.

9. Install Float bowl mounting screws and nut. Check for leaks.

10. Test engine.

That should do it. (carb cleaning 101)

Thanks for using FixYa.

Kelly
P.S. If it still does not start and you have a primer bulb on the carb the primer bulb most likely has a hole in it. Press and hold the primer bulb CLOSED against the carb inner mating surfaces and see if it will start. (2 people required) If it starts and runs the primer bulb has a pin hole in it.

Apr 12, 2010 | Toro Lawn Mower With Toro Power Tools

1 Answer

Gas overflowing in carb. flowing out of the bottom tube


you might find that the needle isnt in properly check that first

Oct 24, 2009 | Yamaha YZ 125 Motorcycles

1 Answer

1998 yamaha bear trackers 250cc , What causes gas


The float is stuck open. Try tapping the side of the fuel bowl to see if you can dislodge what my be in there making it stick. The best thing to do is to take the carb off the bike and disassemble it and clean it.
And when you put the carb back on put a in line fuel filter on and this will help out in the future.

Oct 04, 2009 | Yamaha RD 250 Motorcycles

1 Answer

The carberater is leakin gas


hi mate you float is to high in the carb take the carb off and take the bottom casing off and adjust the float to the correct measurements in the manual if the float is too high it is allowing to much fuel in and so it will flow over the over flow and out the tubes it is simple puch the pin out and adjust the metal where the little valve is hanging onto with a pair of long nose pliers good luck

Jul 07, 2009 | 2003 Suzuki RM 250

1 Answer

110cc pocket bike carberator


That tube would be the overflow tube. Your carb float is sticking open and allowing fuel to flow in constantly. You need to take carb apart, clean needle valve, and inspect or replace carb float.

Apr 21, 2009 | Pit SSR 110CC Pro Beginner Bike

1 Answer

Lawn Mower begins then stops before in use


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It means that either not enough gas is getting into the engine. The gas you pump in when you prime is enough to start the engine but not to keep it going.


There could be several things that cause this.
1. Old fuel:
Solution: Replace the fuel. Dump out the old stuff. If it is a year old it won;t work.

2. A dirty carburetor:
Solution: Clean the carburetor.
Easy carb clean:
Pull the bowl off and use carb cleaning solution to clean it. (you can buy carb cleaning solution a Wal-Mart in the automotive section. I have also heard acetone will work but I have not tried it.) Make sure not to loose the little parts like the pin.

Better carb clean:
pull the carb off the machine and clean each part with carb cleaner. There is a youtube video someone else posted on how to do this.

3. Your gas/air flow is not adjusted properly.
To check:
Pull off or out the air filter. Try to start it.
Solution:
If the machine runs longer there are two options: The air filter is dirty so replace it, or the air flow is not adjusted proberly. There should be a screw like thing sometimes called the "main jet" that you turn to adjust the air flow. It is on the carburetor side or bottom.
If the machine dies faster or won't start there is probably too much air flow and by removing the filter you added more air. Adjust the "Main Jet" as above.



Apr 15, 2009 | Craftsman 10.5 Hp 33" Commercial Cutting...

2 Answers

Mower will not stay running unless primer button continuouly pushed. Gas seems to not be independently flowing, requires manual priming to stay running. As soon as primer gas used, will stop running.


The tube in the bottom of the carb. is probably clogged. Remove the carb, and bowl and try spraying WD-40 through the tube, it should spray into the venturi if it doesn't try using a tip cleaner to unclog the tube.

Apr 12, 2009 | Garden

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