Once engine gets to operating temp it cuts out ,i've checked fuel ,aircleaner & spark plug ,all ok?

ok do you notice that your consuming water but don't see anywere like in the oil

Ok had the same problem it's the fuel pump

Check you have a spark, connect a spare plug and hold it to an earth, crank the engine and watch for a spark. If not check your ignition circuit. If a good strong spark proceed:
Check fuel supply to carburettor - make sure there are no transit plugs that have not been removed. Easiest way is to disconnect the supply hose - no naked lights!!!!
If that\'s OK remove the carburettor float chamber and check that fuel is reaching the carburettor. If the float chamber is dry, check the float valve assembly. There\'s not usually much to small engine carburettors so if the fuels getting to the carb it may be a blocked jet or just very badly adjusted. There is also the possibility that the carb is faulty (yes I know it\'s new but ...!).
If fuel and spark is OK then it could be the spark timing - it should be OK unless you\'ve stripped the engine. On some engine\'s it is possible to set the spark 180 degrees out so that it sparks on the exhaust stroke - just to confuse things some engines spark on both exhaust & compression.
Good Luck!

Have you checked spark plugs? I always check the "BIG" three when diagnosing any engine. Compression, spark, and fuel. I recommend buying a compression tester and a spark tester. Check both of those, if ok then make sure your still getting fuel to the carb. If so, try a shot of starting fluid through the aircleaner, if it starts on starting fluid then dies, you have a dirty carb. I would first of all replace plugs and give this unit a tune up. Good luck and happy wrenching!

I’m happy to assist further over the phone at https://www.6ya.com/expert/layne_0fccff498c319c32

Need to road test with scan tool on it & look at data

Need to confirm the temp issue & what your saying

Need to see fuel pressure & if correct, what it is at 200
when the issues start.

Maybe the egr comes in later & leans it out

Maybe it won't stay in closed loop & that is temp related for sure

Think you need to go for a road test,you drive & shop guy rides
with scanner,have to be part of the solution or they will sell you
spark plugs & call it a tune-up,remember they have been gone for
25 years

need new coil pack or have short in harness grounding engine from running. check fuel line to carburator. 1. take float bowel off bottom of carb. do not touch float or pin holding float. crank engine over until fuel comes out of carb. If fuel comes out, you don't have fuel problem. put float bowel back on carb. 2. check for spark. take spark plug out of mower. put wire back on plug and place the threads on head [or metal of engine to ground the plug]. crank engine over for a few seconds to see if plug gets spark . [always double check with another spark plug that is good]. [[ Remember!!! you have to have someone sitting on the lawnmower to start. unless you by-pass safety switch [only do this if you understand how the safety switch works. NOT EXPLAINED HERE!!!]] If spark is present, there is no grounding problem. when engine is cool. 3. CHECK COIL PACK. for continuity. When the coil pack gets hot it will stop any juice to the plug. A>Check temp sensor B> Check Safety switches grounding out. C> Check for cut wiring harnes. [loose wires rubbing against pulleys, wires cut by rodents]. Hope this helps.........................GAS

Are ou getting a spark at the spark-plug, and then check to see if fuel is getting to the cylinders.... Please say the year and model, and whether fuel injected or carburetor.... then I can further diagnose.

remember to rate the answer.

MAKE SURE THE WATER PUMP IS WORKING AND THE ENGINE IS NOT OVERHEATING THERE MAY BE A TEMP SENSOR THAT SHUTS DOWN THE IGNITION SYSTEM IF OVERHEATING CHECK FOR SPARK AT PLUGS AFTER ENGINE CUTS OFF..

IF HAS SPARK AT PLUGS AND STILL DOSEN'T RUN CHECK FUEL LINES TO CARB .

IF THATS OK SUSPECT FUEL FILTER /STRAINER /FUEL PUMP / CARB PROBLEM


HOPE THIS HELPS

ok its one of two things you need to check when it cuts off if you have spark or fuel if you lose fuel pressure replace pump it gets hot and makes noise like its running but its not pumping fuel and if you lose spark you need to replace ignition control module has a hair line crack in it and when gets hot the crack expands and loses contact and wala no spark

I would check the spark plug wires. If the problem just came out of nowhere, good chance plug wire or wires is at fault. Another symptom pointing towards plug wires would be if it doesn't always do it especially when it's warming up or hasn't come up to operating temp. It will seem to run O.K. but once the vehicle engine warms to oper. temp. the problem will happen. If I am wrong let me know and we can check other things. Good luck