John Deere

115 john Deere tractor 19 hp
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Carburetor flooding…Clean and Rebuild

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If your tractor cranks, but won`t start, you`ll want to look at a few different engine components. Is the fuel making it to the cylinder? Check the fuel level, the shutoff valve, and the fuel filter. If those components look ok, air might not be making it to the cylinder.
If your battery doesn`t have enough power, it can keep your tractor from starting. Check if it needs to be recharged or replaced. You can tell if the battery needs to be recharged below 12.6 volts. If it`s above 12.6 volts, but the tractor still won`t start, it might be time for a new battery.
Touch the metal shaft of a screwdriver to both of the large terminals at the same time. If the engine turns over and starts, the solenoid is bad and should be replaced. If the starter motor does not run, the motor itself is probably defective.
Tractor may be starving for fuel.

Sometimes the fuel cap prevents the fuel tank from breathing. The fuel tank can develop a vacuum. This could cause fuel to stop running to the engine – causing it to stall. If this is the case, give it an hour or two, and the tank pressure will reset and equalize.

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.
The Spark Plugs

The engine`s spark plugs get worn down and damaged over time due to use. A faulty spark plug can cause hard starts, low fuel consumption, and reduced performance. Spark plugs can be one of the first things you check when your tractor performance is off.

To start your tractor, make sure to set it in neutral, and turn the throttle all the way down. Turn the key one notch — not all the way at first — to get the equipment warmed up for half a minute or so. Then, just as with a manual car, push down on the clutch and start the engine. Your tractor should be up and running!
Tractors will start in gear if normal starting circuitry is bypassed. Start the engine from the operator`s seat with the transmission in park. Do not start the engine by shorting across starter terminals. Never start the engine while standing on the ground.
Fuel injection pressure

If your diesel engine won`t start, the problem could be the amount of pressure in the fuel system. The engine may not start if the fuel pressure is too low. Fuel pressure that is too high can cause damage to the exhaust system while also increasing soot pollution in the exhaust.

The Spark Plugs

The engine`s spark plugs get worn down and damaged over time due to use. A faulty spark plug can cause hard starts, low fuel consumption, and reduced performance. Spark plugs can be one of the first things you check when your tractor performance is off.

Fuel injection pressure

If your diesel engine won`t start, the problem could be the amount of pressure in the fuel system. The engine may not start if the fuel pressure is too low. Fuel pressure that is too high can cause damage to the exhaust system while also increasing soot pollution in the exhaust.

The most common cause for slow or hard cranking is a poor ground circuit or bad electrical connection. With your John Deere, I would tend to think that it is weak ground either at the cable or where tractor ground/starter mounts. A tractor, in the same manner as a car, uses a DC electrical system.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Weed eater starts but won't stay running – Weedeater 19 in 25cc Gas Hedge Trimmer
ANSWER : Probably “gum” and “varnish” build-up clogging the TINY passages [called ‘galleries”] inside the carb!

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My tractor stalls like it is starved for gas although the gas tank is full. I,ve changed the fuel filter and the gas cap. I’ve cleaned out the gas tank, gas lines, and the carburetor bowl. The problem seems more acute when the gas tank is full or near full. At this time to alleviate the problem, I blow through the gas cap and the fuel filter fills with gas and it runs good again. But as soon as the fuel filter has no more gas, of course, it stalls until I blow on the gas cap. As the tank gets down to about 1/3 full, the engine runs OK. What else could cause this condition?
ANSWER : I had a similar problem with a sears tractor. close to the carbarator is a rectangle box with a rubber hose going to the engine block – remove the hose and spray carb cleaner in the hose wait a few mins and try again – its a vacuum for the carb

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Lawnmower sat up for a season would not crank replaced sparkplugs air filter fuel filter hose fuel pump is pumping gas to carburator but still will not start unless you pour some gas into the carburator or spray some carb cleaner into the carburator but will not stay running as if it is not getting any gas what should i check next?
ANSWER : If it will start when you pour gas then its a fuel problem on some of these they have a screw at the bottom of the carb remove that and see if you have bad fuel. If that does not work then remove the carb and service it may just be a stuck float or something

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Does not run, will start with starting fluid – Mantis 2-Cycle Tiller
ANSWER : You should never use starting fluid on this model.

Add a couple of ounces of 100% acetone (available at Walmart) to some fresh fuel. Attempt to start for several pulls. Let sit for several minutes and repeat until it sounds like it wants to run.

Then watch this video and do it:

http://www.alamia.us/mantis_parts_s/148.htm

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Will only start and run in choked position, when throttle applied chokes out. If started with out choke and throttle position in low speed will start and run for 10 sec then like it runs out of gas.
ANSWER : I have your solution guaranteed, I fixed mine yesturday remove H L screw plastic caps and on high 11 threads exposed and on the low side 8 threads exposed. removing the plastic caps allows u further adjusting these wear out or move soo just take them things off and you will be rolling

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I have a 2007, 6500 Craftsman tractor with 26 hp engine (kohler) that won’t start. The tractor was running (old gas) when we got off it for a few minutes then went back to start it again but it would not start. It turned over but never would try to start. I drained old gas, put in new. Same situation. I put in new spark plugs same result.
verified gas was pumping correctly, it was. Oil full, gas full, new plugs, air filter clean. Only has 85 hours on tractor.
ANSWER : First check fuel shutoff valve on bottom of carb . Disconnect and remove , clean witn carb cleaner and be sure there is power at wire when the key is on . Also clean carb jets and bowl …..

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I forgot to add oil to my toro ccr powerlite e. should i remove the gas and start all over again?
ANSWER : !!!!!! dran the gas put in the neww mix gas and pray for the best

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Tractor ran out of gas, put more in, now won’t start again
ANSWER : Is it diesel ? Do you have a way to prime the fuel supply (fuel priming pump) ?

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