50 Torque 2in1 22″ Push Lawn Mower with High Wheels ()
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I just fixed my mower today after almost giving up on it. It would start, then stop after about 1 or 2 seconds after priming it. So I knew it wasn’t getting fuel after starting. I first tried the standard things such as checking gas cap for venting, I removed the cap and tried, but same problem. I checked the fuel line from tank to carb, but it was OK.
So then I removed the carburator and cleaned all over, sticking a pin in the little jets on the bolt holding the bulb. I pounded it all over with carb cleaner even though everything looked very clean, nothing appeared to be dirty and no visible problems.
Then I noticed that the float as I tipped the carb up and down didn’t always go down. Then I used WD-40 to blast the hinge / springs around the float. I reassembled the carb, air intake, and fuel tank back on to the mower and tried it. It worked and saved me a few hundred that I was ready to spend on a new mower.
When primed, fuel is forced into the carburator so it started right up, but since the float was sticking in the UP position, it though there was already fuel in the bulb and this didn’t allow more fuel from flowing into the carburator from the tank. The mower is about 8 years old, Tucumseh, but this will let it last me a few more years.
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If the motor starts initially but then won`t stay running, that means it`s getting a good initial injection of gas from the primer bulb, but then the carburetor starves off the oxygen it needs to keep combusting. When your carburetor is clogged, the cause is likely to be evaporated gas that has gummed up the pores.
A dirty carburetor is the most common cause of a lawn mower that starts and then dies. Other possible causes include: Stale/Dirty Gas. Faulty Choke.
The easiest way to tell a 2-cycle engine from a 4-cycle engine is the number of fuel tank and/or oil sump fill ports. A 2-cycle engine has one fill port with a cap that has fuel pump and oil can icon. The cap will usually state the oil to fuel mix ratio.
Operate the mower engine in the fast position. Engines with primer: For most temperature conditions, firmly push the primer bulb three times. In cooler weather, additional priming may be needed. A warm engine will usually not require priming.
A faulty or dirty spark plug could be the reason your lawn mower won`t stay running. It might produce the initial spark, but the spark won`t be enough to keep the engine running if the plug is clogged with dirt and oil. Spark plugs are usually located on the front of a push lawn mower and connected to a black cable.
Over-priming can happen when the primer bulb is pushed too many times. This can result in the engines of your lawnmower becoming flooded by fuel. The fuel can spread into the combustion chamber, where it can gather and pool. Under this condition, the spark plug can get too wet and will not ignite.
The most common cause of a mower that runs for thirty minutes and then dies is a faulty armature. A faulty gas cap is the second most likely cause.
Two-cycle motors are popular for lawn care tools such as trimmers, but four-cycle motors are the norm for lawn mowers. Two-cycle motors are cheap and simple and produce more power for their given size than a four-cycle motor.
Use a 40:1 two-cycle oil mix ratio. One gallon of gasoline combined with 3.2 oz of two-cycle engine oil.
An airlock is one of the common causes why your mower won`t start after running out of fuel. An Airlock occurs when air replaces fuel in the fuel lines. As you refill your fuel tank, you could push the air towards your mower`s carburetor, which keeps the new fuel from reaching the engine.
If a mower is hard to start, it may be the result of a dirty carburetor and/or a clogged air filter. Use a screwdriver to remove the carburetor and clean any dirt out of it with a rag. Clean the air filter or replace it if it`s disposable.
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Lawn mower will start and run for 5 seconds and shut down
Will it stay running with your choke on? if so then clean your carb. if not then look for a blockage from tank to carb. ie fuel shut off, deteriorated fuel line. plugged filter etc
I have trouble starting a toro walk behind mower
All, I thought my carb was shot, so I replaced it. Still, start but no run (and had to use starting fluid). THEN!!! I noticed the spring to the “rev limiter” (just below and towards rear of carb) was not “tight”. The stupid bracket that holds the end of that spring had been bent down ~1/16″ and that caused all this heartache. CHECK YOUR REV LIMITER!!!
I have a Poulan push mower that after mowing in a ditch started making a loud noise and running rough. It almost sounded as if metal was hitting metal. The mower was vibrating more than normal. I checked under the mower and nothing is hitting. After a few times of stopping the mower engine because it sound as if it is going to die down the mower will not start now. The shaft does not appear bent and the blade appears ok. The mower has oil, a good spark plug and a clean air filter. It was running fine until that moment. I did not see anything that I hit but it is possible I hit something in the ditch like a pine cone or branch. What could the problem be and how would I go about fixing it?
If you are sure the oil level is correct then it sounds like it’s about to die, unfortunately. A pine cone shouldn’t cause any damage, but a large branch may do so. Was it smoking before you shut it down? The vibration could be caused from a bent blade. It could also be caused from a part breaking in the motor. I wish I could have given you better news!
I have had a poulan pro 550 series push mower for almost 1 year at the end of the season last year the mower would start briefly and then stop. i have cleaned out the air filter and that did not help.the mower started, i made one revolution around the yard 3/4th of the way the mower quit. I then primed the mower it started then quit and now it will not start at all. Does anyone have any suggestions of what to do. Thanks
There is a little spring that works the carburetor arm. If that popped off then the mower will not run.
Self propelled mower will start but want stay running long? it runs about 3 or 4 min. then stop and when i restart it, it will start back up.
The fuel bowl has a float and needle, if the float isn’t floating to open the needle for gas to flow into the carb, it will cut off. A kit can be purchased for about $5 or take yours out and soak and clean then replace. Usually when these go bad its best to replace them.
Mower start up and runs, but starts to cut back, and smokes just a little bit. The mower stops smoking when it throttle up. It will continue to run but not at full throttle. I can hold a finger gently over the fuel primer bulb and it will throttle up for a small time.
It sounds like she’s being deprived of the correct fuel / air mixture due to a dirty carburetor (the biggest problem with mowers when gas is left to sit for a period of time). If you do not know how to take the carburetor apart and clean it thoroughly, then I suggest taking it to the local shop (hardware store or mower shop) and having it tuned up. It’ll probably be just fine and worth the money. Hope this helps and good luck.James
Mower won’t start. Toro mower..engine won’t turn over. Cleaned sparkplug…checked air filter..weather cool. Followed instructions for cold engine…prime witrh three pushes of the bulb..wnon’t even hint at a start..
Something everyone over looks is oil. Did you check the oil? You seemed to mention everything else but. If you have a low oil switch with low oil it will not start
Toro personal pace mower will not stay started?
If ir starts and runs for only a few seconds it’s a dirty carb/bad gas. Drain the fuel system and use FRESH gas; change out your fuel supply monthly to avoid “phase separation” issues. If it runs for several minutes and then dies it is possibly a sticking valve. Do a compression check cold and after it stalls to confirm. Hope this helps