I think the motor might need to be replaced.
Hi there. It is hard to say if you need a motor without knowing what occurred. If the engine made any noise or suddenly stopped and will not crank or start then there are some tests that need to be done. If it cranks over then a compression test should be done. If you suspect a seized engine then you should try cranking the engine by hand using a large wrench on the crank pulley. If you cannot turn it or if there is no compression then it does need an engine.
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