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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 30073
Experience:  Service manager and technician for all brands of engines with 40 + years of experience.
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Seems like my sit on mower engine ( briggs & Stratton 4145-500cc

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seems like my sit on mower engine ( briggs & Stratton 4145-500cc ) has either seized or the starter motor has jammed, how do i free the starter?
Try removing the spark plug to see if engine will crank. If starter is stuck, you will need to move the flywheel with wrench on top, to free it. But I suspect you have fluid on top of piston.
With spark pug put and wrench on the top of flywheel does not free engine, it may be seized! Was it run low of oil?
Customer: replied 2 years ago.
Hello Curtis,No there is enough oil in the engine, so its noit that. I will try taking out the spark plug and loosening the flywheel, to do that do I just need to remove the briggs stratton cover?
Try the spark plug first. Then yes, the top cover needs to be removed to access the flywheel.
Customer: replied 2 years ago.
OK I managed to turn the flywheel manually with the spanner and then started it fine. Its working ok now. Could it have been grass stuck underneath causing it to jam?
Did you have spark plug out, Was there any fluid in the cylinder? I doubt it was grass stopping it.
Please accept to close and get me paid!
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