Nuru,
Since the 4100 has nothing but idiot lights, you just have to let it idle at a half trottle of a few minutes. Mine just puts out a some smoke for the first few seconds and with the typical diesel rattles and shakes.
Just yesterday, I fired my up and it rattled and shook and whined for a few minutes. I let it run for a minute or two in the shed, backed in out into the garden area, and let it sit for about 5 minutes. The HST squeeled and the power steering whined. After a minute or two, the noises were normal.
Think about it, don't you whine and squeel and feel a little tight when you start up on a cold, winter morning!! /w3tcompact/icons/wink.gif/w3tcompact/icons/laugh.gif/w3tcompact/icons/smile.gif
Terry