Do some simple trouble shooting and you only need a wench to do it.
#1 make sure you have a good blue/white spark at all the plugs and also at the center wire of the cap that will jump a 1/4 gap or more. If you have that got to #2. If you do not check that your points open and close as they should and are set correctly. Also make sure when you open the point by hand with the switch on you see a spark. No spark means the point need to be cleaned or replaced.
#2. Pull the carb drain plug and check for gas flow. You should have a flow that will fill a pint jar in under 3 minutes and yes catch it. #3 when was the last time your serviced the air cleaner it maybe clogged up