The chainsaw was used a while ago, but why doesn't it start again?

Hello, this is YongThree.^^
This is a first aid method when using engine machinery such as chain saws, mowers, blowers, etc.
You want to take a break from a machine you used well and use it again, but it won't start?
Do not worry! Machines don't break down so suddenly.
Why doesn't it start up!
I'll tell you how to do it ^^

#Chain saw#Mower#Broa#Self-maintenance#YongThree