That largely depends on the quality of the engine. If its a cheap/old one its junk. Most often a cheap engine is fatally damaged by a seize. However...
The two main culprits are heat and lack of lubrication. So, allowing the engine to cool and making sure its properly lubed can sometime un-stick a mildly seized engine. (always check a small engine's oil level before each use)
If it is jammed a bit harder spraying a penetrating lubricant (like PB Blaster) into the spark plug hole can help.
Severely seized engines would need to be taken apart and rebuilt.
clutch for (your model mower) on eBay or other site that sells mower parts
Take it to Sears.
Yes .
Depends how bad its seized. Sometimes you can try to spin the crankshaft and knock it loose. If that works, it should still be torn down to check for cylinder damage. If it seized in the first place, there is internal damage somewhere.
You can attempt to fix it by reading this http://www.lawnmowerman.tv/Troubleshooting.asp Here its basically a homemade manual about lawn mowers and how to fix them. They give you helpful tips and the types of oils,blades that your mower needs.
Hi, Something in the drivetrain is seized/locked up. Peace, crigby
Fix it.
Remove the head and put some transmission fluid into it. Try to move the shaft later.
sheared flywheel key. youtube has vids... type in mower cord backfires & you'll see instructions on how to fix it.
It depends on what the exact problem is. The most common problem of this type can be solved by replacing the drive belts. If this doesn't fix the problem, it's best to take the mower to a professional.
Helicoil.
you can, I have done a few myself years ago, but these days the price of parts is nothing short of piracy and the price of new mowers by ratio and wages has tumbled. I would not bother getting my hands dirty with it. Do not get it done in a repair shop unless you like to cry on your bills