Kenmore 110 Spin Cycle

Assuming that this is a basic top load, direct drive, neutral drain washer it seems as if the problem is likely in the timer.

The transmission and draining are controlled by the motor which gets it's power through the timer. If the timer isn't advancing once it gets to the spin cycle area, the motor keeps getting power, the machine keeps spinning and only by pushing in the control knob will the motor stop.

Here are a couple of places to look at how the machine works and parts for a basic Kenmore washer.

Sears parts site:

http://www.searspartsdirect.com/partsdirect/index.action

Enter your model number and you'll see a number of sub catagories for the washer components.

Whirlpool Installation and maintenance PDF.

This is a public domain Whirlpool manual describing how the washer works and a good troubleshooting section.

https://secured.whirlpool.com/Service/SrvTechAdm.nsf/2cd44500d572193285256a45004fd9d6/f7e2147fa98b28cf85257122007475cb/$FILE/L-55.pdf