fantastic use, it now starts to act up after 10 minutes of use. That is, the engine stops running within the first 10 minutes of use. After a minute of waiting, it can be restarted. Just prior to the engine stall, the engine rpm begins to fluctuate. When it restarts, it can run for another minute or two, the stalls again.

I changed the fuel filter, removed the fuel tank to clean it and replaced with high quality grade (regular) gas.

I also applied a fuel injector cleaner into the fuel tank at the recommended ratio of solvent:gas quantity—the engine still stalls.

I appreciate any advise
Garden

Experienced gardeners share their insights in answering this question :
Hi Sorry to hear about this problemDid you notice when it stalls out the exhaust will give a lasst puff of smpke out before dieing out? May be it doesn’t since you maintaned this religiously as you stated For every 100 hours of running the intake and exhaust valves must be gappedI do believe yours will be .008 for each valve on your motorThe valves have two nuts on each one so the last nut works as a lock nutIn those 100 hours of running they will tend to work loose causing the engine to die out

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Craftsman LT2000 – 2004-2006.
Tax included.
The Craftsman name is known for its excellent durability and performance, and its lawn tractors are no exception. The LT2000 models have been known for their reliability ever since their introduction, but the latest models are surpassing even these high expectations.
Craftsman LT2000 Riding Lawn Mower 247.289050.
Briggs & Stratton Corporation is an American manufacturer of gasoline engines with headquarters in Wauwatosa, Wisconsin. Wauwatosa, Wisconsin, U.S.
The four U.S. based Briggs & Stratton engine plants have produced more than 200 million engines since their openings. Briggs & Stratton has its headquarters and eight manufacturing facilities located in the United States.
To determine the year of manufacture for a tractor with a six digit number use the following formula. Take the first and the fourth digit, and subtract three to get the year. For example, the serial number of 395602 would be: 36-3 = 1933.
The model and serial number of a Craftsman riding mower is located on the frame under the seat, or on the underside of the seat.
All Craftsman mowers are made by MTD. Craftsman lawn tractors run the price spectrum from rear-drive models priced around $1,300 to full-featured, hydrostatic drive units that cost more than $2,000. Most Craftsman lawn tractors feature Briggs & Stratton engines, and the 42-inch-deck models are among the most popular.
MTD makes all of the store brands (i.e., a mower that might have the Home Depot name on it), along with MTD, Dynamark, YardPro, Weed Eater, Noma, and Sears Craftsman. Murray makes MTD. MTD makes the low end (non-commercial) John Deere tractors. John Deere makes all John Deere.
Amazon.com : Sears Craftsman LT2000 46″ Mower Deck Parts Rebuild Kit : Patio, Lawn & Garden.
The model number is printed on the left side of the Product Identification Label, attached to the metal bracket that supports the seat, and begins with the letters, “CM”.

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I have a Craftsman LT 2000 lawn tractor with a Briggs 18 HP OHV—I followed the maintenance manual religiously each year.

After 6 years of fantastic use, it now starts to act up after 10 minutes of use. That is, the engine stops running within the first 10 minutes of use. After a minute of waiting, it can be restarted. Just prior to the engine stall, the engine rpm begins to fluctuate. When it restarts, it can run for another minute or two, the stalls again.

I changed the fuel filter, removed the fuel tank to clean it and replaced with high quality grade (regular) gas.

I also applied a fuel injector cleaner into the fuel tank at the recommended ratio of solvent:gas quantity—the engine still stalls.

I appreciate any advise

ANSWER : Hi Sorry to hear about this problemDid you notice when it stalls out the exhaust will give a lasst puff of smpke out before dieing out? May be it doesn’t since you maintaned this religiously as you stated For every 100 hours of running the intake and exhaust valves must be gappedI do believe yours will be .008 for each valve on your motorThe valves have two nuts on each one so the last nut works as a lock nutIn those 100 hours of running they will tend to work loose causing the engine to die out

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I have a husqvarna 323L string trimmer. I stored it after running the tank & carb dry for about two years. I fueled it, then started it, & it ran for a minute then died like I turned the switch off. Since it would not restart, I found the fuel filter had broken off the hardened fuel line & it sucked gummy crap out of the tank & into the carb. Failing at cleaning the carb, I finally put a new carb on it & replaced the pump, hoses & filter. It has ran good till this year. I winterized it with stabilizer & left it with a full tank over the winter. The gas in the tank was gone when I got ready to use it this year. I filled the tank with premix, checked for leaks, then started it. It would run fine for about half a tank, start idling poorly (lean) then cutoff & refuse to restart till I refilled the tank. I finally found the tank had cracks & was letting pressure out of the tank & apparently this was causing the carb to lose it’s ability to siphon gas out of the tank. So I replaced the tank which came with new hoses & a filter, which I properly installed to the carb. It cranked right up, but when it runs a half tank, the carb quits sucking gas out of the tank. When I pump to prime the carb, it moves the fuel into the carb, but the pump never gets hard like it does when I prime the carb when the motor is cold. I have to keep refilling the tank, prime, & then it starts & runs until the tank gets about half empty. The new fuel filter is down in the gas tank properly, but It will not run after it shuts off until I refill the tank & prime. I’m baffled. New tank, new hoses, new filter, new carb, & I can find no leaks in the fuel system. It runs strong. The 323L is a two-stroke & it always cranks on the second pull from cold on a full tank. Any ideas?
ANSWER :

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Chainsaw stalls Chainsaw is 4 years old and has a history of moderate use. After I ran the saw about 1 minute on plain gas (grabbed the wrong gas can – ouch) the chainsaw sputtered and stopped.

It didn't seize, and the pull starter never became more or less difficult than normal. The engine would continue to start if I pressed the prime bulb and engaging the choke, but stall again after 10-20 seconds. The temperature that day was about 50 degrees F and I was running the saw with the “cold plug” installed (per warm weather running).

When it refused to keep running I did the following:
Flushed the fuel tank (that's when I saw the gas had no oil in it).
Ran hardware wire through all of the fuel lines.
Replaced the fuel filter and spark plug.
Cleaned the air filter with a nylon brush and compressed air.

Same behavior (start then stall in less than 20 seconds). I made at least 20+ attempts to start it.

I removed the carburetor and, though it looked perfectly clean, I took off the top and bottom covers then sprayed everything with automotive carb cleaner and blew out the passages with compressed air. The gasket and diaphragm looked new. No pinholes in the diaphragm when held against a bright light. I reinstalled the carb but got the same behavior (start then stall in less than 20 seconds). I again made at least 20+ attempts to start it.

I disassembled the short block and saw that the piston has some slight scoring on it. The ring is clean and I verified that the piston ring has .001 clearance between it and the piston ring groove all the way around with the ring held tightly in place (I was thinking that the piston might have become deformed if it did indeed get too hot when run without any oil premix).

The cylinder wall has no scoring and there isn't any signs of melted aluminum anywhere. The crank is clean as was the inside of the crank cover.

I reinstalled the crank cover using permatex non-hardening gasket goop and torqued the cover bolts to 10 inch pounds. I reassembled everything else per the exploded diagrams in Echo's “parts manual” for the CS400.

During assembly I took note that both the carb gasket and intake boot look like new.

Still the same result: press prime bulb once, engage choke, pull a few times and it starts but stalls after 10-20 seconds.

I'm stumped.

ANSWER : Not sure what to say other than its fuel starvation, if not already done replace the fuel filter in the tank, if no better i would suspect a massive air leak, so replace the crank seals, if there is no primary compression in the crankcsae fuel will not pull through the engine, good luck.

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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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How do I remove and clean air filter? – Briggs & Stratton Lawn-Boy 10640 20-Inch 6.5 HP Gas Powered Lawn Mower
ANSWER : There should be a square of plastic on the side of the engine which is opposite of the muffler. It has a small hex head with a slot cut in it. Remove this plastic cover and the air cleaner should be inside of it.

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Lt 1000 quit running while mowing . found fuel filter clogged replaced finished mowing . did another lawn right after no problem next time i used it about a week later made one pass and died replaced fuel solenoid under carb rebuilt carb blew all fuel lines out cleaned tank . same problem exists runns for about 5-10 minutes or one pass on the lawn then dies ?
ANSWER : Check the gas tank cap, there should be a small hole to let air in as the fuel is used. If it’s blocked air cant get in and as fuel is used a partial vacuum forms in the tank, the fuel stops running and the motor dies.

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I have a lt 2000 15.5 briggs and when i go to
ANSWER : Sometimes when these sit over the winter, and one of the valves are open, the valve will stick that way. Unfortunately the only way to fix it is to take the cylinder head off, lubricate the valve stem, and manually work it. It will loosen up enough to close on its own power, then you can put it back together and run it.

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The oil will not drain out of my craftsman 18 HP Briggs & Straton riding lawn mower. I unplug the drain cap. I took the dipstick out, but the oil will not drain out. The dipstick indicates the oil is full. It’s acting as if the oil is clogged. It’s been sitting since last summer. How can I get the oil out?
ANSWER : Did you push in and turn the little pipe you took the cap off of to open it???

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