When pressed to operate its as if the blades are jammed but there are no stuck limbs

Electric or Gas......You have to be specific on here.....

it is possible that the limb got caught in the pulley and made the drive belt pop off. look under it and see if there is a belt that looks really loose or out of place.

There should be a button to operate the shredder in the reverse direction to help unclog the blade. If the blades are bound up enough to stop the motor from turning, it will be necessary to take it apart to remove the obstruction.

Hi Andy
The short answer to your questions is yes, but bear in mind when cutting with the top of the blade the chainsaw will be pushing away from the work surface, whereas the bottom of the blade pulls in to the work surface. All safety aspects should be considered prior to using a chainsaw, such as the lay of the land, wind direction, firm footing and most importantly a a pre-designated safe escape route if things don't go as planned! and of course a full understanding of where any tree or limbs etc are going to fall.
The following website has lots of information (safety and otherwise) regarding the use of chainsaws and some very informative suggested reading articles, I'd reccomend reading through these if your a novice chainsaw operator.
http://forestry.about.com/od/forestryhelp/ss/byw_saw_6.htm
Regards
Alan

I've been all over the internet with this because the blade clamp on my 331 is jammed as well. It turns out DeWalt has redesigned the blade clamp, I'm guessing they did this because the original design jams. Solution: call DeWalt. Tell them that you have the old and now obsolete blade clamp that is prone to jamming, and that yours is stuck making your saw worthless. Ask them to send you the new redesigned clamp that is supposed to work better. You swap out blade clamp by removing two hex head (allen) screws.

The new style blade clamp for the 331 is part number: N072135SV

*The obsolete part #: N072135, 586203-00 and 589148-00

Good luck getting DeWalt to send you the working part for free.

The stuck rope is holding the Crank from turning. The crank is what the blade is attached to. Disassemble and fix the rope area and blade issue will be solved

Take it back to where you purchased it or contact them by email/phone and explain your problem (have saw in hand). Together you can solve this. We cannot find the model number on your saw from here. GL
Lou

sharpen the blades they are dull

The two small little guides you refer to are a pair of switches that get depressed when the top is pressed down. In the top is supposed to be a plastic pin in the top of each one of the grooves. When both pins push both of the switches down (look like black dots) the grinder wil operate. The proper solution would be to replace the top.