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Model # 921166420 Official Craftsman air compressor
Here are the diagrams and repair parts for Official Craftsman 921166420 air compressor, as well as links to manuals and error code tables, if available.
Owner’s manualBy Schematic
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Browse Parts for
921166420 Power Tools
#KIT4
Air compressor diagram
Air compressor wheel kit
Part #E102369
The manufacturer no longer makes this part, and there's no substitute part
#74
Air compressor diagram
Air compressor air hose
Part #E103623
The manufacturer no longer makes this part, and there's no substitute part
#5
Air compressor diagram
Companion air compressor cooling fan
Part #E100297
The manufacturer no longer makes this part, and there's no substitute part
#73
Air compressor diagram
Foam grip
Part #E102159
The manufacturer no longer makes this part, and there's no substitute part
#52
Air compressor diagram
Air compressor drain valve
Part #E101717
The manufacturer no longer makes this part, and there's no substitute part
#46
Air compressor diagram
Air compressor pressure relief tube
Part #E103622
The manufacturer no longer makes this part, and there's no substitute part
#KIT2
Air compressor diagram
Air compressor valve plate kit
Part #E103497
The manufacturer no longer makes this part, and there's no substitute part
#49
Air compressor diagram
Air compressor check valve
Part #E101362
The manufacturer no longer makes this part, and there's no substitute part
#50
Air compressor diagram
Handle
Part #E103625
The manufacturer no longer makes this part, and there's no substitute part
#KIT1
Air compressor diagram
Air compressor connecting rod assembly
Part #E103495
The manufacturer no longer makes this part, and there's no substitute part
Most common symptoms to help you fix your air compressors
Choose a symptom to see related air compressor repairs.
Main causes: loose air tube fitting connections, bad check valve, faulty safety valve, damaged or corroded air tank, bad…
Main cause: bad check valve…
Main causes: tank drain valve open or leaking air, leaky air tank, bad safety valve, worn pump seals, bad pump valve pla…
Main causes: rusted air tank, loose air tube fitting connections, bad check valve, leaky safety valve, bad tank drain va…
Main causes: bad safety valve, pressure switch failure…
Main cause: faulty output air pressure regulator…
Main cause: bad air tank pressure gauge…
Main causes: lack of electrical power, check valve failure, bad pressure switch…
Most common repair guides to help fix your air compressors
These step-by-step repair guides will help you safely fix what’s broken on your air compressor.
How to replace an air compressor pressure switch
You can replace a broken air compressor pressure switch in about 45 minutes. …
Repair difficulty
Time required
45 minutes or less
How to rebuild an air compressor pump
If the air compressor won't fill the tank with compressed air, rebuild the pump using these steps in about 45 minutes. …
Repair difficulty
Time required
45 minutes or less
How to replace an air compressor check valve
You can replace a defective air compressor check valve in about 10 minutes.…
Repair difficulty
Time required
15 minutes or less
Effective articles & videos to help repair your air compressors
Use the advice and tips in these articles and videos to get the most out of your air compressor.
Learn how to tell whether a fuse is blown…
Find out how to reduce air compressor noise.…
See how to perform routine maintenance on your oil-lubricated air compressor.…