To prevent from making mistakes.
Often a supervisor's instructions are useful.
examples for education
to get the correct thing
Follow the instructions of your orthodontist to the letter!
They are the one's grading your performance.
If you don't follow manufacturer's instructions, you may misuse the product, tool or equipment and hurt someone or damage something.
The importance of instructions is so you will know what to do, you need to know how to do it right. Like you need to know how to follow instructions at school so you will get a good grade, or if you do an important job like being a firefighter, you need to know what to do in order to save somebody from a fire and save your life as well. There can be a lot of penalties of not following instructions like if you didn't follow instructions with medicine, you could get sick. If you didn't follow instructions on the food you were making it wouldn't turn out right. You could also get lost if you didn't follow the instructions on how to get somewhere.
to keep a child safe
ask google:L
It is important to follow manufacturer's instructions when operating any kind of machinery. If you don't:you or someone else could be hurtyou could damage the machineyour could damage the product and waste resources
you can possibly void any warranty or risk injury or death
If you don't follow the manufacturer's instructions for servicing equipment, you are misusing the equipment and it is more likely to fail, perhaps in a way that someone gets hurt.