It sounds like you have a broken motor coupling. If you manually advance the dial does it drain? The washer is a direct drive model that uses an electric drive motor to run the gearcase (transmission) and the drain pump. Even with the coupler broken (and worse-case scenario - the gearcase) the washer will still drain due to the way it is designed.
If the washer
will fill and drain, but won't agitate or spin, this is usually a sign that the motor coupling has broken. The noise of the motor engaging, rattling noises, lack of agitation and ability to still drain are other common symptoms. This is a common fail item with this model washer
through normal wear and tear. Newer versions of the coupler are more resilient and resist breaking. The following link explains how to replace one:http://www.fixya.com/support/r385252-replacing_motor_coupling_whirlpool_top
The motor coupling is located between the drive motor and the transmission and takes the place of a drive belt
. They do wear out and can break. The replacement part number is included in the link I provided and is an improved upgraded coupling that is more resilient. It should last longer.
A replacement coupler can be purchased on line at appliancepartspros.com for about $11. Just use the part number in the link and "Search by Part Number" for your search criteria.
If you confirmed that the washer will not drain, you could have a pump that has something caught in it. The drain on these washers on have one moving part - the impeller. If something gets caught in it, the pump will not drain. You can access the pump by following this link:
Use the steps in the link provided to access the drain pump and remove the hoses to check inside the pump for any foreign objects (underwires from bras, undergarments and panty hose are common items). If the wash tub is still full of water an easy way to drain it with no mess is to use a wet/dry shop vac to pull the water from the tub. Simple gravity works too by removing one of the drain hoses, but is not recommended if the washer is in your home. These wash tubs have a 35 gallon capacity. If you have no shop vac and cannot risk allowing the washer to drain by pulling one of the drain hoses, you need to bail.
If the pump is defective, the part number is 3363892 and can be purchased at appliancepartspros.com for about $42.
If you have questions, or require additional assistance, please let me know. I hope this helps you.