4-59. Before reassembling a sewing machine, what do you use to smooth rusty parts? 1. Sand paper 2. Rubbing compound 3. Emery paper 4. Grinding compound 4-60. When reassembling a sewing machine, what part should you install first? 1. Arm shaft 2. Hook drive shaft 3. Bobbin case opener 4. Hook saddle assembly 4-61. When the bobbin case opener is properly installed, it is in what position? 1. The curved end points toward the bobbin case 2. The curved end points away from the bobbin case 3. The blunt end points toward the bobbin case 4. The blunt end points away from the bobbin case 4-62. What total number of spline grooves are on a hook driving shaft? 1. Five 2. Six 3. Seven 4. Eight 4-63. On the hook driving shaft, the end with a spline is installed first into the right hook driving shaft bearing. 4-64. When you are replacing the feed-driving eccentric, which of the following statements is true? 1. The oiling felt faces down and the crank toward the operator 2. The oiling felt faces up and the crank toward the operator 3. The oiling felt faces up and the crank away from the operator 4. The oiling felt faces down end the crank away from the operator 4-65. When you are installing the hook driving shaft lock ratchet, the flange and setscrews face the left of the machine. 1. True 2. False 4-66. Before you insert the needlebar rock frame assembly, the needlebar connecting link must be at its lowest position. 1. True 2. False 4-67. When installing the presser bar into the machine head, you should insert it through the upper bushing about 1. 1 inch 2. 2 inches 3. 3 inches 4. 3 1/2 inches 1. True 2. False 20