Drill an appropriate sized hole in the end of the key and use a stud extractor.
If that is not possible it is likely that you will simply have to cut it of and replace the flywheel
90741-147-000 KEY, WOODRUFF Costs £1.30 from www.lings.com
The timing is not adjustable. The only way the engine can be out of time is if the keyway between the crankshaft and the flywheel is sheared. If it is in place and in good shape the engine will be in time.
I would check the flywheel key and see if it has sheared. On push mowers, the key can shear if you plug the deck, or if you hit a solid object like a tree root or stake. The flywheel key sets the ignition timing of the engine, and a sheared one will cause the problems you describe. You will have to remove the shroud and flywheel to check the key. If you don't know how to do this, there should be some basic repair manuals at your local library or online.
Timing is fixed and determined by flywheel. The only way for timing to be off is if the flywheel key has sheared. As the magnets on the flywheel pass the armature (coil), a spark is sent, end of story.
It sounds as if your engine may be out of time, I would check for a sheared flywheel key.
On the back of the engine, mounted between the engine and transmission, inside the bell housing. You cannot see the flywheel. The starter is connected to the flywheel when you start the engine.On the back of the engine, mounted between the engine and transmission, inside the bell housing. You cannot see the flywheel. The starter is connected to the flywheel when you start the engine.
you have to remove the flywheel, take engine cover off, remove flywheel, its under it, next to the points, you have to remove the flywheel, take engine cover off, remove flywheel, its under it, next to the points, you have to remove the flywheel, take engine cover off, remove flywheel, its under it, next to the points, you have to remove the flywheel, take engine cover off, remove flywheel, its under it, next to the points,
will 4.6 windsor engine with 6 bolt flywheel interchange with 8 bolt flywheel
No, a rusted flywheel will not cause the engine not to turn over.
Timing on all Briggs & Stratton small engines is set at the factory and non-adjustable. It is determined by the placement of the armature (coil) and position of flywheel on crankshaft. Unless the crankshaft is bent or the flywheel key is sheared (both are possible after an impact or sudden stoppage), timing is perfect. Rough running is likely an intake or mechanical problem.
check oil, the engine could be frozen. check under deck there coud be stuff around your crankshaft, check if blade is catching on deck, check for bent crank or blade, sheared flywheel key
There is no way to adjust the timing. As long as the keyway (little square aluminum wedge) is in place between the flywheel and the crankshaft it should be in time. If the keyway is sheared or even damaged it will make the engine run rough or it won't run at all. If you remove the nut holding the flywheel onto the crankshaft you will be able to see the grooves in the crank and the flywheel that this keyway slides into. If those two grooves are not perfectly in line then that is your problem.