Old school should stay old school

There was a lumberjack who used to work old-school style, with his loyal friend, an old axe.
But after many years of work with his axe, he decided to buy a chainsaw to do his work faster.
So he goes to a store with that kind of tools and looks around for something that he might find interesting, and he sees a big modern cainsaw. He points at it and says to the manager of the store, "That's what I want!".
The manager tells him, "Very good sir. It's the newest chainsaw model, and it will not disappoint you. You can cut 100 trees with this only in one hour."
The lumberjack excited buys it, and the next day he goes to the forest to try it. But surprisingly, he cut only 10 trees in one whole day. The next day he goes again to the forest, and does his best only to cut 13 trees in one day. Decided to cut a lot of trees the third day, he uses all of his power, and after 24 hours of work he has cut only 20 trees.
Annoyed and disappointed by his new chainsaw, he goes to the store he bought it and tells the seller, "That thing is broken, it doesn't work well.You said I would cut 100 in an hour with this, but I can barely cut 20 trees in a day."
The manager says, "Let me see it." He pulls the chainsaw's little rope, and vrooooom!!!.... its engine starts.
The lumberjack says, "Man! How the heck did you do that?!"