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| TROUBLESHOOTING & REPAIR |
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| Observe Safety Guidelines detailed in the beginning of this manual. |
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| PROBLEMS |
| POSSIBLE AREAS OF | RECOMMENDED |
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| (SYMPTOMS) |
| MISADJUSTMENT(S) | COURSE OF ACTION |
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| OUTPUT PROBLEMS | 1. Check the idler control switch |
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| The engine will NOT go to high | 1. Check the auxiliary power plug |
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| speed when a load is applied to | and associated leads for loose | and associated leads for |
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| the DC auxiliary receptacle. The | or faulty connections. | loose or faulty connections. |
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| engine does go to high speed | 2. The load may be too small. | See the Wiring Diagram. |
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| when a load is applied to the | 2. Check the CURRENT |
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| welding output terminals. When | The load must be above 150 | SENSING PC BOARD. |
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| the engine is operating in the | watts. | Perform the Current Sense |
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| high RPM condition, both |
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| Board Test. Replace if |
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| welding output and DC auxiliary |
| necessary. |
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| are normal. |
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| 3. Perform the Idler Solenoid |
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| Test. (PERKINS 10929 |
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| ONLY) |
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| 4. Check for loose or faulty |
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| connections at the idler PC |
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| board (PERKINS) ECU in |
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| Kubota and Throttle Body |
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| Controller GM 3.0 liter. |
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| 5. The idler PC board |
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| (PERKINS) ECU in Kubota or |
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| Throttle Body Controller |
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| 3.0 liter may be faulty. |
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| Contact the Lincoln Electric |
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| 1. Make sure the ignition switch | 3877. |
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| The engine “cranks” but will not | 1. Check the ignition switch for |
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| start. |
| is in the ON position. | proper operation. Check the |
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| 2. Check for adequate fuel | associated leads for loose or |
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| faulty connections. See the |
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| supply. | Wiring Diagram. |
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| 2. Check the fuel solenoid. Make |
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| sure it is opening when |
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| +12VDC is applied.(Except |
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| Kubota) See the Wiring |
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| Diagram. |
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| 3. The idler PC board may be |
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| faulty (Perkins 10929) |
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| Replace, OR The ECU Kubota |
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| or Throttle Body Controller GM |
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| 3.0 Liter may be faulty. Contact |
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| the Lincoln Electric Service |
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| Dept. |
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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 the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call
