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Craftsman
Air Compressor

Model # 10217521 Official Craftsman 1, 1.5 & 2-hp 2-stage 2-cylinder compressor

Here are the diagrams and repair parts for Official Craftsman 10217521 1, 1.5 & 2-hp 2-stage 2-cylinder compressor, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

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Showing 10 of 83 parts  |
Pulley 31009
#34

Replacement parts diagram

Pulley

Part #31009

The manufacturer no longer makes this part, and there's no substitute part

Tool 16870
#65

Replacement parts diagram

Tool

Part #16870

The manufacturer no longer makes this part, and there's no substitute part

Roll Pin 38255
#23

Replacement parts diagram

Roll pin

Part #38255

The manufacturer no longer makes this part, and there's no substitute part

Tool 16869
#66

Replacement parts diagram

Tool

Part #16869

The manufacturer no longer makes this part, and there's no substitute part

Gasket 17277
#55

Replacement parts diagram

Gasket

Part #17277

The manufacturer no longer makes this part, and there's no substitute part

Piston Assembly 38344

#NI

All parts diagram

Piston assembly

Part #38344

The manufacturer no longer makes this part, and there's no substitute part

Connector 38323
#10

Replacement parts diagram

Connector

Part #38323

The manufacturer no longer makes this part, and there's no substitute part

Cap Screw 97526
#35

Replacement parts diagram

Cap screw

Part #97526

The manufacturer no longer makes this part, and there's no substitute part

Wrist Pin 38235
#22

Replacement parts diagram

Wrist pin

Part #38235

The manufacturer no longer makes this part, and there's no substitute part

Head Assembly 42367
#9

Replacement parts diagram

Head assembly

Part #42367

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.

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Why won't my air compressor start with a full air tank?

Main cause: bad check valve…

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Why won't my air compressor build tank pressure?

Main causes: tank drain valve open or leaking air, leaky air tank, bad safety valve, worn pump seals, bad pump valve pla…

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Why can't I adjust the output air pressure on my air compressor?

Main cause: faulty output air pressure regulator…

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Why doesn't my air compressor's pressure gauge work?

Main cause: bad air tank pressure gauge…

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Why does my air compressor safety valve keep popping open?

Main causes: bad safety valve, pressure switch failure…

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Why does air leak from my air compressor?

Main causes: loose air tube fitting connections, bad check valve, faulty safety valve, damaged or corroded air tank, bad…

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Why won't my air compressor tank hold air?

Main causes: rusted air tank, loose air tube fitting connections, bad check valve, leaky safety valve, bad tank drain va…

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Why is my air compressor not turning on?

Main causes: lack of electrical power, check valve failure, bad pressure switch…

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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.

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How to replace an air compressor check valve

How to replace an air compressor check valve

You can replace a defective air compressor check valve in about 10 minutes.…

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Repair difficulty
Time required
 15 minutes or less
How to replace an air compressor pressure switch

How to replace an air compressor pressure switch

You can replace a broken air compressor pressure switch in about 45 minutes. …

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Repair difficulty
Time required
 45 minutes or less
How to rebuild an air compressor pump

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. …

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Repair difficulty
Time required
 45 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.

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How to reduce air compressor noise

How to reduce air compressor noise

Find out how to reduce air compressor noise.…

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The unseen dangers of air compressors

The unseen dangers of air compressors

Learn about the possible dangers associated with using an air compressor and how you can reduce the risks of property da…

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How to maintain an oil-free air compressor

How to maintain an oil-free air compressor

Learn how to maintain an oil-less air compressor for safe and efficient operation.…

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