| Year | 1926 |
| Date | 10-Jun |
| Volume | 54 |
| Issue | 1,309 |
| Page | 550 |
| Category | Workshop Topics |
| Part | |
| Title | Fitting New Valves and Guides to an Old Gas Engine |
| Author | T.W.Averill |
| Notes | As originally made, turning valve guides, enlarging governor balls, in their rebuilt condition, air and gas mixing valve |