I have a samsung top loading machine. I recently got two problems with and got it solved, one by myself and another with the help of samsung technical person through phone. I just thought of sharing it here.

1. Water coming little
I found that the flow of water is not good and it was flowing only very little. I observed this problem 2 or 3 times. I thought there is less water in the water tank. So i switched on the motor. One day even after the motor is switched on, water was coming only very little and it more than 3 hours to wash the clothes. Then i studied the user manual of Samsung.Based on the guidelines from it, i closed the tap, disassembled the hose and removed the inlet filter in it. After washing the inlet filter thoroughly, i put the filter and assembled the hose back. After that water was coming freely.

2. Spin not working
Sometime back, the spin in my washing machine was not working. It washed and rinsed the clothes and stopped showing '5E' on the indicator.Initially i thought, i had put excess clothes and that's why it was not able to wash it. So i put few clothes and tried to wash it. But the result is the same. Then I searched in internet for samsung customer care number. After trying so many times, finally i catched the customer care. The lady said that she will forward the call to their technician and if possible they can solve the problem through phone. Otherwise they visit in person. The technical guy called me and instructed to take a bucket full of water and pour to the washing machine. Then he told to take the drain outlet tube in my hand and pour a mug of water to it and shake it well and keep it on the ground. Then he told me to switch on the washing machine and select the spin mode. The the spin was working fine. The problem is that the dust got collected in the drain outlet which prevented it to drain.

Some tips for washing machine users
1. Don't put more number of clothes than the specified number in your user manual. If you put more clothes, it may not wash the clothes properly as there will be no space for rotation and spin.
2. Nowadays seperate powders for washing machine from all the popular brands like RIN,Ariel,Surf etc are available.Use it instead of normal washing powders.
3. Never put silk sarees or delicate clothes in washing machine.Instead wash it by hand or give it for laundry.
4. Don't put the colour clothes and white clothes together in the washing machine unless you are very sure that the colour wont come out from the clothes.
5. Clean the dust collector bag in the washing machine frequently.
6. If your washing machine has got the option for cleaning the tub, do it atleast once in a month.
7. While putting shirts, handwash the shirt's collar before putting it to washing machine as most of the machines are not removing these kind of stains whatever detergent we use.
8. Keep the warranty card and customer care number of your washing machine always in hand in case of any problem. Normally washing machines come with 2 years warranty.
9. Don't put woolen clothes like socks in the washing machine as the threads may came out. 
10. Don't use washing machine for just 2 or 3 clothes. Instead you can wash that by hand.