Elna Lotus Computer Sewing Machine Threading Guide.
Turn the spool thread guide in the direction of the arrow as illustrated.
Pass the end of the thread through the thread guide.
Follow threading sequence in illustration.
Draw the end of the thread down around the check spring holder.
Firmly draw the thread up from right to left over the take up lever
and down into the take-up lever eye.
Thread the needle from front to back.
If you need the complete instruction manual, you can find it here.
Elna Lotus Computer Sewing Machine Instruction Manual.