| 41. | Explain the gas pressure controller. |
| 42. | Explain thoroughly the care of the gas burner. |
| 43. | What will cause matrix ears to bend in the distributor |
| | box? |
| 44. | How is the distributor box lift adjusted? |
| 45. | What causes matrices to clog in the distributor box and |
| | how are they removed? |
| 46. | What will cause two matrices to lift at one time in the |
| | distributor box? |
| 47. | What will cause matrices to fall in the wrong channel |
| | of the magazine, and what is the remedy? |
| 48. | Describe the mechanism which drives the distributor |
| | screws? |
| 49. | Explain the construction and action of the distributor |
| | spiral automatic. |
| 50. | How is the first elevator adjusted? Give all the adjustments. |