I believe this is a similar model: http://sewusa.com/Threading_Diagrams/Threading_Pages/Kenmore_Sewing_Machine_Threading/kenmore_1207_threading_diagram.htm
Pay for it manual: http://sewusa.com/Sewing_Machine_Manuals/Kenmore_Manuals/Kenmore_1219_Instruction_Manual.htm
The 148.xxx denotes a machine made by Soryu for Sears.