Joke 25: The chain saw

Canadian lumberjacks visit their Russian colleagues. They bring the newest and the best chain saw model on the market as an present.
One of the Russians takes it to the woods to test it out. An Canadian calls after him:
“This is THE SAW, you can do 2000 cubic meters a day with it. Easy!”
The Russian comes in the evening all disappointed. Just 1700.
The Canadians are surprised and they suggest to try it again, to get used to it.
The Russian comes the next evening, worn down and all sweat - 1750, not a cubic more.
He tries another couple of days, but the best he can do is 1900.
The Canadians decide to go with him to show him the best technique. They come to the woods. One of them puts the goggles on and a big roar – he starts the saw. The Russian cries:
“What is the terrible noise!!!”