Question about Tecumseh Horizontal Tiller Engine 8 Hp, 1" X 2 57/64" Shaft, Modelno. Hm80 - 155656x

Open Question

824 Toro snowthrower leaking fuel!

I have an 824 Toro snowthrower. I has started leaking gas from around the idle speed screw and from where the fuel line connects to the carb there is a constant flow of fuel. Any ideas on how to stop the flow of fuel besides shutting of the fuel valve, could it be the the needle stuck in the float. If so where is it located in the bowl!!! Also whenever the engine is primed, fuel shoots out of a small hole located above the idle mixture screw!! any ideas will be greatly appreciated, snow is on it's way!!!

Posted by on

  • 1 more comment 
  • bnjay Feb 19, 2009

    So what is the easiest way to locate that line. Not to mechanically inclined.

  • bnjay Feb 19, 2009

    GReat thanks so much, very helpful, now where is the needle located in the carb. I know where the float is and I was told that it might just be the needle that is stuck open causing the gas to continually flow. or possibly a small hole in the float keeping it open because it will not float as well with gas in it!!!

  • bnjay Feb 20, 2009

    Thanks so much, found the problem, Took the float off and sure enough there was a small crack on it near the hinge. Cleaned it up/emptied the fuel out of it and put a small bead of soder on it. Works like a charm. Now I just have to readjust the carb and i am good to go. Wouldn't you know it, the snow missed us. Oh well, you give great advice.



3 Suggested Answers

  • 246 Answers

SOURCE: Is the carb adjustment screw on bottom


>>The Following is an Instruction File I made for Correcting this Problem. Any Input is Appreciated.
>>****All the Carburetor Adjustments are the Same for Lawn Mower and Trimmers.
>>There are Several Location for the Air Mixture Screws.
>>The Idle Air Mixture Screws are Usually Located at the Top of the Carburetor Bowl and the Top of the Carburetor Body.
>>If the Main Air and Idle Air Mixture Screws are Side by Side on the Side of the Carburetor, then the Idle Air is the Nearest to the Engine.
>>The Main Jet Air Mixture Screw is Located in the Bottom of the Carburetor Bowl or Beside the Idle Air Screw on the Side of the Carburetor Body.
>>The Engine Idle Screw is Usually Easy to Identify because you can See where it Makes Contact with the Carburetor Throttle Shaft Plate Stop Ear. The H and L Air Mixture Screws Go Into the Body of the Carburetor and the Tips Cannot be Seen.
>>Some of the Older Model Carburetors have the Main Jet Mixture Screw Straight in from the Top of the Carburetor Body (this is Rare anymore).
>>If you have Cleaned the Carburetor (Disassembled and Soaked Overnight in Carburetor Cleaner (I Use Gunk). Then Blow Out the Passages with Compressed Air and Install a New Kit if Required.
>>Now Setting the Air Mixture Screws:
>>****Turn the Idle Air and Main Air Mixture Screws In Until SNUG **Do Not Jam** Then Reverse Both Screws 1 1/2 Turns.****
>>Holding the Throttle Full Open, Start the Engine.
>>Turn the Main Air Mixture Screw Clockwise Until Proper Revs are Obtained. Occasionally you May have to Turn this Counter Clockwise to Achieve the Proper Revs. Now Allow the Engine to Idle.
>>Set the Engine Idle Screw (Not Idle Air) so the Engine will Stay Running if Required.
>>Now Set the Idle Air Mixture Screw so there is No Hesitation when Throttling from Idle to Full Throttle.
>>Reset the Engine Idle if Required. If This Carburetor has a Single Air Adjustment.
>>Use the Section Above that Pertains to Full Throttle RPM Air Mixture Screw and then Adjust the Screw if Required to Eliminate Any Hesitation when Rapidly Throttling from Idle to Full Throttle.**
>>2- .
Please, Do Not Hesitate, If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck


jbridger (John)

Posted on May 11, 2009

  • 130 Answers

SOURCE: Tecumseh 17.5 hp ohv engine won't start

check valve clearance. if ok you going have change carb.sometimes i rebuild a carb everthing seam ok but carb wont work right so i have get a new carb and it works fine evertime

Posted on Jul 21, 2009

  • 36 Answers

SOURCE: when using the primer to

I have a gokart that will do the same thing. No Your carb doesn't need to be rebuilt its just where gas builds up and starts to overflow. It'll be fine as long as its not leaking when your operating it.

Posted on Feb 08, 2011

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

What is H and L carb setting for a Poulan P3314

The "L" is your idle setting and the "H" is the wide open fuel setting. After the engine starts and runs a minute adjust the "L" to the smoothest run setting the go full throttle and adjust the "H" the same way.

Hope this helps.

Apr 20, 2012 | Poulan P3314 14" Gas Chain Saw 2.0 Cuin...

1 Answer

Vanguard V Twin 18 hp. monted in Cushman Motor scooter, runs great at W.O.T and at on quarter throttle, misses at range inbetween

Sounds like your carb needs the fuel/air mix adjusted..uses all the gas at high speed but has excess at low speeds...find your adjusting screw and at med throttle slowly screw it clockwise until the engine starts to sputter then back it out until it starts to sputter again then continue to do this until you reach ideal mix where it runs the best it can..then go slowly through the throttle up and down..when set..unjust your idle speed screw to your ideal idle speed..if this dies not fix ..carb will bed cleaned or rebuilt. Good luck.. Note always push or pull your throttle handle slowly to position avoids gas load up causing sputter and backfire.

Mar 15, 2012 | Briggs & Stratton Briggs Stratton Vanguard...

1 Answer

Engine acts like it wants to quit asif its about of gas which it isnt

Hi, I will try to help you out. I think it just needs adjustment, probably the high speed mixture needle located on the bottom of the carb. Get it running at high speed and try to turn the screw in 1/8 turn increments. It sounds as if it might be flooding out. Turn in (clockwise) 1/8 turn and wait a little, it takes a few seconds before you hear the difference. If it seems to run a bit better try that again, if worse turn back to original position and turn it the other way to add more gas to the mixture. If a bit better try that again and listen for the difference. If that that does not work at all try the low idle mixture screw which is located on the side of carb, it has a spring on it just like the high mixture screw. Do the same as previously described and see what happens. Some might say the low needle has nothing to do with the high speed, but it does have some effect as you will notice. Bring to idle and adjust for smoothest speed.
Other things that could cause that is the fuel tank cap vent hole might be partially blocked. (if you remove fuel, air must be able to enter so a vacuum does not stop the flow of fuel). Something that happened to me is that the shut off valve under the tank gradually closed with the vibrations causing low fuel flow. The carburetor might need cleaning or the fuel filter might be plugged. The gas tank might have dirt in it limiting fuel flow. The governor might need adjustment. With the more load you put on the engine, the governor should feed more fuel to the engine to compensate. Is there an air filter on this engine, if there is check it out and clean or install a new one.
That is about all I can think of right now. Without hearing it run it is difficult to give you an exact fix. All the best and hope this is a bit helpful to you. Good luck. Will gladly answer any other questions.

Feb 03, 2011 | Tecumseh Horizontal Tiller Engine 8 Hp, 1"...

1 Answer

Started reving very fast wont idle ;was the correct fuel mix was cutting on side ie not down

Check your all of fuel lines for cracks / air leaks especially near any fittings. Also check the primer bulb (if installed) for any pin holes. The symptom you describe is either caused by fuel starvation or the introduction of air into the fuel system. Also check inside the gas tank looking at the fuel pick up tube END / strainer for debris. Make sure that the gas cap remains vented. If some one has placed plastic over the fuel tank fill hole and then the gas cap it will perform as you stated. This model also has a mini fuel filter that can be clogged causing fuel starvation.

See this link:
There is a fuel line item A7 and a tank purge device item A6 that is often where the air leak presents itself.
The primer bulb item B14 and the purge line B13 are also a major source of air introduction.

Once you get the feul system sealed again by repair of the fuel lines or replacement of the primer bulb you should be back in the wood cutting business again WITHOUT making carb aadjustments.

Thanks for choosing FixYa,

Jan 05, 2011 | Poulan P3314 14" Gas Chain Saw 2.0 Cuin...

1 Answer

Ok i have a problem with my Briggs & Stratton 16HP v-twin vanguard engine.When i start the engine and rev it up when i idles back down it sits there and rev's up and down then it straightens out and...

It appears that you have a slight mis-adjustment in the idle speed and idle mixture. To adjust setup, start with at least a half tank of fuel, and have engine at operating temperature (That is warm but not overly Hot). The Briggs & Stratton Website manuals section should show the locations of the adjusting screws if you are not sure of them.
To adjust idle speed set Throttle control to minimum and adjust screw on throttle butterfly to maintain a good idle speed. To adjust idle mixture, screw in idle mixture screw (Lean) until motor falters and then screw out (Rich) until it falters again. Correct setting is the halfway point of these two positions. You may have to re-adjust idle speed again and also the mixture to get best running.
If you are not comfortable doing this, take it to a B & S dealer.

Sep 21, 2010 | Briggs & Stratton Briggs Stratton Vanguard...

1 Answer

How do I keep it running?

Try adjusting the idle screw up around the carb.Hope this helps and Thank You for asking

Jul 19, 2010 | Poulan P3314 14" Gas Chain Saw 2.0 Cuin...

1 Answer

Need the know the correct H and L settings for our Poulan P3314 14 in. Gas Chainsaw - 33CC. The chainsaw will not idle.

There are no hard and fast settings.
The initial starting point "H" and "L" are 1.5 turns CCW from lightly seated.
The"T" adjustment enters here too (idle speed) and there is initial setting without a tach, depending on age may not be any initial "T" setting.
The "L" needle is primarily idle performance (not speed) and acceleration to full throttle.
The "H" is mostly performance at speed, but all are interconnected.

Fresh mix of fuel. Put ALL of the old mix in any 4 cycle and start new. I suggest 50:1 regardless of what your manual says. This is the best performance adjustment I have found.
Carburetor Adjustment by
  • CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly.
  • Clean the air filter; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run.
  • Clean the spark arrestor and muffler; if the saw cannot exhale it cannot inhale.
  • There are 2 wav (sound - idle & full - may not be highlighted) files that I find most helpful, I think you will too.
If push comes to shove a local saw shop (I prefer Stihl mechanics and do not own a Stihl) should be considered.

If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH

Mar 09, 2010 | Poulan P3314 14" Gas Chain Saw 2.0 Cuin...

1 Answer


sounds like needle valve that is attatched to float bowl is stuck, may want to drop float bowl and let some gas run out. or at least take out main jet that holds float bowl on and let some fuel run out. Old fuel will varnish and make carb. parts stick and or clog jets. Careful as you know gas is very flammable , do it outside. If it doesn't start after that i would have carb rebuilt. hope this helps

Jan 01, 2010 | Tecumseh Horizontal Tiller Engine 8 Hp, 1"...

1 Answer

I have a Poulan 3314 saw that is only two weeks old. It works good until it's warmed up for about 20 minutes. Then, when you finish a cut and get off the throttle it dies. It always starts right up again....

The low side of carb setting needs to be shut down. Will speed the idle up and stop from overloading on fuel. Only one catch. It takes a special tool to adjust. Go to for your nearest dealer.

Oct 28, 2009 | Poulan P3314 14" Gas Chain Saw 2.0 Cuin...

1 Answer

My Poulan P3314 primer won't take in fuel or push it out.

the vinyl primer button on your carb shoots fuel into the crankshaft space. when you pull the rewind air and fuel in the crankshaft area is sucked into the combustion chamber. when the magneto reaches almost top dead center, the high voltage fires the spark plug. if there is an air leak in the gasket that surrounds the crankshaft, the air/fuel mixture will be way off. flooding will occur and the plug will get saturated. remove the whole back of your engine and clean the mating surfaces. now use high temp permatex and run a bead all around the gasket surface. tighten all the bolts - screws. push the primer button twice and try starting the engine.

Oct 24, 2009 | Poulan P3314 14" Gas Chain Saw 2.0 Cuin...

Not finding what you are looking for?
Tecumseh Horizontal Tiller Engine 8 Hp, 1" X 2 57/64" Shaft, Modelno. Hm80 - 155656x Logo

Related Topics:

356 people viewed this question

Ask a Question

Usually answered in minutes!

Top Tecumseh Tools & Hardware - Others Experts

John Trevino

Level 3 Expert

1378 Answers

Brad Brown

Level 3 Expert

13819 Answers

J.D. Browning
J.D. Browning

Level 3 Expert

2717 Answers

Are you a Tecumseh Tool and Hardware - Other Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides