TROUBLESHOOTING
SYMPTOM
1.Engine will not start.
PROBABLE CAUSE | REMEDY |
Various engine problems. | Refer to engine manual accompanying your air |
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| SYMPTOM | ||
2. | Noisy operation. |
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PROBABLE CAUSE | REMEDY | |||
Loose engine pulley or pump flywheel. | Tighten pulley and or flywheel. | |||
Lack of oil in the pump. | Add correct amount of oil. Check for bearing dam- | |||
Carbon deposits on pistons or valves. | age. | |||
Remove cylinder head and inspect. Clean or re- | ||||
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Bearing, piston or connecting rod failure. | place. | |||
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SYMPTOM
3.Air leaks from safety relief valve.
PROBABLE CAUSE | REMEDY |
Possible defective safety relief valve. | Operate safety relief valve manually by pulling on |
| ring. If it still leaks, it should be replaced. |
Excessive air tank pressure. | Defective motor/pressure switch. Replace. |
| SYMPTOM |
4.Air leaks at pump.
PROBABLE CAUSE | REMEDY |
Defective gaskets. | Replace and torque head bolts to 20 ft./lbs. |
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| SYMPTOM | |
5. | Air leaks at fittings. |
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PROBABLE CAUSE | REMEDY | ||
Fittings are not tight enough. | Tighten fittings where air can be heard escaping. | ||
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| Check fittings with soapy water solution. Do not | |
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| overtighten. | |
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| SYMPTOM | |
6. | Air leak in air tank. |
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PROBABLE CAUSE | REMEDY | ||
Defective or rusted air tank. | Air tank must be replaced. Do not attempt to repair | ||
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| air tank! | |
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SYMPTOM
7.Air blowing from inlet filter.
PROBABLE CAUSE | REMEDY |
Damaged inlet (reed) valve. | Contact Senco Customer Service @ |
12 | Senco® Gasoline Air Compressor Manual 2004 |