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| TROUBLESHOOTING | ||||
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| ENGINE TROUBLESHOOTING - (TM27 Gasoline Engine Only) |
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| TROUBLE | CAUSES |
| WHAT TO DO | ||
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| 7. Large decrease in speed. | a. Misadjusted governor spring adjusting screw. | a. | Adjust screw until speed does not drop more than | ||
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| 100 rpm ± 25 rpm when arc is struck. If surge | |
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| occurs, eliminate it with the control rod. If high | |
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| idle speed changes, readjust the high idle | |
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| speed screw. ** | |
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| 8. Unable to strike an arc. | a. Idle speed screw is misadjusted. | a. | Idle speed is set too low so idler fails to operate | ||
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| when arc is struck. Adjust low idle speed | |
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| screw for 1350 ± 25 rpm. | |
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| 9. Engine runs irregularly. | a. Carburetor set too lean. | a. | Adjust carburetor adjusting screw so engine will | ||
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| run smoothly at idle speed. ** | |
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| b. Carburetor Deicing Kit in wrong configuration. | b. | Carburetor Deicing Kit per instructions on page B3 | |
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| and B4. | |
| 10. Engine fails to pick up speed |
| a. | Check the idler. | ||
| when arc is struck. |
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** See engine manual. |
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
CLASSIC III AND IIID