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John Deere LT133 won't start

Joe I have a John Deere LT133 that will not start. It is very well maintained (oil, filters, plug, etc.) changed almost yearly. While mowing the lawn the other day, the mower abruptly stopped without warning, almost like I turned the key off. It sounds like it wants to turn over, but just will not. The battery and spark plug are brand new. The gas is fresh, the belts are fine, the carburetor is clean. Does anyone have any easy suggestions. Thank you in advance.
rcbe would start by removing spark plug and attempting to rotate engine by hand to verify engine not locked up.
If OK, would take out batt and have LOAD tested by qualified shop while cleaning to bright metal battery connections.
If engine will not spin when starting normally by key, would chk for 12volts to starter relay.
If engine spins, remove carb air cleaner; spary 1-2 shots of rattlecan carb cleaner directly into carb throat: if engine pops/tries to start, you have fuel delivery problem. If not, ignition and/or mechanical problem.
Post back with results - we will try to help with addtl troubleshooting.

Sveeque Check out once again the fuel you're using (if it's improper - the engine won't start) or your filter (maybe there's a defect or whatever). Next examine your electric (or maybe the spark plug wire simply disconnected. No matter how well maintained your tractor may be, you still need replace some spare parts from time to time:

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