my washer is not spinning at isn’t 100%. the motor sounds like it is about to give out…what can i do…can i buy a new part for it or do i need to buy a new washer…it washes just fine but it doesn’t spin all the way…it spins but it doesn’t spin fast like it did before…it leaves the cloths wet…i have to spin it 2 or 3 times before i can dry them…PLEASE HELP 
Your symptoms sound like the clutch (not the washer) needs to be replaced.
Here is the part
[PART]AP3094537[/PART]
and here is a site that will show you how to replace it.
Clutch Replacement on Whirlpool and Kenmore Washers
On the way in check the coupling, but if it is agitating ok the problem is more likely the clutch.