Question about Craftsman 26 Hp 54" Deck Yard Tractor

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Engine turns over but will not start as if it is not getting gas. I checked hose going to carb. And it had gas in. I pulled a spark plug out and did not see it spark when I turned to engine over. 26 hp V twin Briggs.

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Well you're on the right track. Check both spark plugs though. You may have spark on one and not the other.Depending on how old of a tractor, you have either points or electronic ignition. If old check the points if no spark, if newer, the magneto could have failed. If one plug works, but not the other try switching mags, then you'll know for sure it was bad. If you find you have spark, and you don't think you're getting fuel, try a shot of starting fluid in the carb. If it hits on that, then you know you have a fuel problem. You cannot leave today's gasoline in a mower without adding an additive like sta-bil.

Posted on Jul 04, 2010

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Sounds dlumb, but first check and see that the fuel is flowing into the carb. You should make sure the ignition is working properly and firing, do this by pulling the plug wire from spark plug and hold it about a quarter inch from metal while turning the engine as if starting. A strong spark should jump the gap without a problem. If the spark is nice and blue, pull the spark plug and check to see if it got flooded out and is wet. If so, dry it out, clean it, regap it it, or install a new one. Then try starting it again after adjusting the new carb by turning the idle screw all the way in, then back it out one and a half turns for initial setting. If it still has problems spray starting fluid into the carb while turning it over. You should also check the new carb float level since not all new things work as they should.

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1 Answer

Wont firi over been sitting for a while


The following applies to pretty much any carbureted engine.
You need three things for an internal combustion engine: Fuel, Spark, and Air.
The first place I'd start is with the spark plug.
Remove the plug. With the plug wire attached to the plug, ground the electrode (threaded part) against the metal frame and crank the engine again. Check to see if there's a spark between the electrodes. If there is, then you've established spark - for that cylinder and only that cylinder. If you have spark in all cylinders, next thing I'd check is fuel.
I would start at the fuel inlet of the carb. Pull off the fuel line and make sure fuel can get there from the tank. If not, you have a plugged filter or debris in the tank that's preventing the fuel from reaching the carb. Clear the obstruction and try starting.
Still won't start? There is the possibility that gas in the carb has dried out. That can plug ports, keep the float from working, etc. Best fix is a carb cleanout.
On some bikes, you can check to see if the float is working. There is sometimes a drain valve in the sediment bowl (on the bottom of the carb). Open the drain and see if gas comes out. If it doesn't then there is no gas in the carb. If no gas comes out, then it's likely that your float is stuck.
If you don't have a drain valve, on some carbs, there is a "nut" on the bottom of the sediment bolt. It's actually a bolt that holds the sediment bowl to the carb. Loosen the bolt until your bowl is free to move. If no gas comes out between the bowl and the carb, your float is stuck. If it does come out, then it could be the needle that meters gas to your engine. Work the throttle a few times and then try again. With the gas in the bowl, working the throttle moves the needle in and out and can clear out enough "varnish" to let gas get into the cylinder.
Again, try starting it. Still no joy, pull the plug and see if it's wet. If it's wet, then it has been getting gas - too much, in fact, but that's because it hasn't been firing. You're back to two issues:
Either the needle isn't closing and too much gas is getting into the cylinder or you don't have spark. If it's the first, then you need to pull the carb for that cylinder, clean it out and re-install. If it's the second, you have an intermittent wiring problem which is going to be a lot of fun to find.

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Apache quad 100cc Bike will not start, battery is ok, plenty of petrol in it but will not fire, can anyone help,


this typically comes down to basics. you engine needs air,fuel and spark to run. FUEL - pull the main fuel hose in to the carb from gas tank and turn on to be sure fuel is getting to the carb. SPARK - next pull out spark plug and while still connected to igntion cap, touch end of plug to motor and turn over engine. if you do not see spark, this is your issue and is usually the most common issue. if spark is present, spray starting fluid into the spark plug hole, reinstall plug and try to start, if it trys to start as in starts then dies, your not getting fuel past or from your carb. Clean carb. AIR - last but not least check your air filter and insure it is not clogged or obstructed and is allowing air to the engine. As for no spark, the can be many issues from a bad CDI ignition coil or generator/stator to just a bad kill switch or cut/unplugged wire.

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1 Answer

I have a 2002 Honda Spirit 750 thats running with a cyl missing and sputtering when twisting the throttle. I removed the seat and gas tank to try and remove the carb boots between air filter to try and...


if the open hose on each boot is on the air side of the carb..air will be pulled through them all the time bypassing the air filter... if the hoses are on the engine side of the carb and open... the engine won't ever run right unless you plug them... i would first take the spark plug cap and spark plug out of the cylinder that is missing...place the removed plug into the cap and hold the plug by the cap to a a part of the frame and turn the bike over to see if you have spark at that cylinder. if you do...go ahead and try some starting fluid spray in the hose on the intake boot.
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1 Answer

Just will not start


You have most likely done this but lets go back to the basics.

Do you have spark at the plug?
Check to see if the plug is fouled - pull the plug connect to the plug wire- ground the metal part of the plug to the metal body of the engine - as you turn the engine over it should fire cleanly from the center to the electrode, if it fires off to the side or has an orange colored spark it is fouled - replace it.

Once we have spark check for gas is it getting to the carb?

90+ % of all small engines not running are due to the fuel line or in tank screen being plugged with garbage. Remove the fuel line from the carb, point it down and using a small container to catch the gas it should flow freely.
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Burning down the house will upset the other half

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1 Answer

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1 Answer

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Ryobi 790r i have changed the gas line and the primer bulb . the primer will mash in 1 good time and then gets very hard to mash in . i fully choke it and it will crank but only for 3 seconds until it...


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