How to thread a front mounted sewing machine

All sewing machines are different, I have a front mounted, side mounted, and a serge machine. Here I will be giving a walk through on how to thread a front mounted sewing machine.

1. Place a spool of thread on the spindle holder
2. Lead the thread across the top of the machine into the first thread guide hook
3. Guide the thread down to the right of the tension disk.
4. Guide the thread around the tension disk, making sure the thread falls between the two disks. 
5. Continue around the tension disk, and lead the thread into and under the tension spring lever. 
6. Lead the thread back up and through the hold of the take up lever
7. Lead the thread down and through the thread guides
8. Guide the thread into the clamp near the needle holder
9. Guide the thread through the eye of the needle

if the sewing machine is threaded incorrectly, the thread of the stitch will loop on the bottom layer of fabric, the machine will skip stitches, or the needle will unthread after you sew a few stitches.