Nobody knows. Buy the new lawn mower. You will save your time and nerves...
Remove the bolt holding the blade to the left
well it all deepens how broken it is if its really broken you will have to get a new one but if they is something wrong with the blade try to get a old dust pan brush and turn the lawn mower over and give it a brush or buy a new blade on the internet or on ebay
If you have not broken the plug or hit the blade on something and bent the blade you should be fine.
Blocked air filter, need spark plug replacement,
A Razor, a lawn mower, and a rollerblade all include a blade. A razor has a blade. A lawnmower has a blade A rollerblade has no actual blade but it has the word blade in its name.
How do you change the blade on a Toro 21" self-propelled mower
Usually a short length of 2x4 can be used to wedge and hold the blade to loosen the bolt.
part# 141114 21 3/4" x 2 1/2" Mulcher about $20.00 from Sears
What is better a high lift lawn mower blade or a low lift blade.
The Yardman Series push mower uses a 21 inch blade.
A shaking lawnmower is usually a bent / broken blade. Don't continue to run the engine, because you can bend the crankshaft. Check the blade first, and if the mower continues to shake even with a balanced blade, then the crank shaft may already be bent.
www.cubcadet.com for parts or a cub cadet dealer. The old number but is the same blade is 742-XXXXX.