22" excalibur hedge trimmer has no spark and will not start

Depending on where purchased, they can run from about $25.00 to $35.00

Check the spark plug.

try fresh fuel then take apart the carb and clean it

You should be able to sharpen your hedge trimmer blades. There is a good video on how to sharpen hedge trimmer blades on youtube by ereplacementparts. He explains how to do it with a file or a grinder.

Back to basics, do you have a spark at the plug? do you have fresh fuel in the tank? have you replaced the pick up filter in the fuel tank? have you removed the muffler and taken a look at the piston face through the open port to see if the engine has nipped up?

Ensure blades are sharpened. If there are burs on blades they can seize.
Blades should be lubricated with WD40 , waste oil or other lubricant.
The bolts holding the two blades together shouldn't be too tight.

50:1 is 50:1 no matter whose 2 cycle mix you use. 50:1 is 2.6 ounces of 2cycle mix to 1 gallon (US) of gasoline. I recommend strongly to use a brand that contains fuel stabilizer. It will come in a 3.2 ounce bottle...still 50:1. The premium 2 cycle oils will be semi-synthetic or full synthetic and will claim "no smoke"

Took mine off yesterday... need to sharpen or buy another? Neal

It's a 2-cyle engine. The oil is in the gas.