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King-Craft
Air Compressor

Model # 6851-09 Official King-Craft air compressor

Here are the diagrams and repair parts for Official King-Craft 6851-09 air compressor, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 73 parts  |
Bolt APC4016-A-05-JW
#5

Compressor diagram

Bolt

Part #APC4016-A-05-JW

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

Gasket APC4016-A-03-JW
#3

Compressor diagram

Gasket

Part #APC4016-A-03-JW

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

Bolt APC4016-A-56-JW
#56

Compressor diagram

Bolt

Part #APC4016-A-56-JW

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

Oil Sealant APC4016-A-43-JW
#43

Compressor diagram

Oil sealant

Part #APC4016-A-43-JW

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

Check Valve APC4016-A-54-JW
#54

Compressor diagram

Check valve

Part #APC4016-A-54-JW

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

Piston APC4016-A-15-JW
#15

Compressor diagram

Piston

Part #APC4016-A-15-JW

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

Valve APC4016-A-23-JW
#23

Compressor diagram

Valve

Part #APC4016-A-23-JW

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

Piston Pin APC4016-A-14-JW
#14

Compressor diagram

Piston pin

Part #APC4016-A-14-JW

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

Lock Washer APC4016-A-48-JW
#48

Compressor diagram

Lock washer

Part #APC4016-A-48-JW

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

Washer APC4016-A-66-JW
#66

Compressor diagram

Washer

Part #APC4016-A-66-JW

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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