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Owner's Manual & Safety Instructions
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operating, inspection, maintenance and cleaning procedures� Write the product's serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number)�
Keep this manual and the receipt in a safe and dry place for future reference�
email our technical support at: productsupport@harborfreight.com
When unpacking, make sure that the product is intact
and undamaged� If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible�
©
Copyright
2018 by Harbor Freight Tools
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools�
Diagrams within this manual may not be drawn proportionally� Due to continuing
improvements, actual product may differ slightly from the product described herein�
Tools required for assembly and service may not be included�
Keep this manual for the safety warnings and precautions, assembly,
Visit our website at: http://www.harborfreight.com
®
� All rights reserved�
Read this material before using this product�
Failure to do so can result in serious injury�
SAVE THIS MANUAL�
18j
64857
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Summary of Contents for McGraw 64857
- Page 1 (or month and year of purchase if product has no number)� Keep this manual and the receipt in a safe and dry place for future reference� Visit our website at: http://www.harborfreight.com 64857 email our technical support at: productsupport@harborfreight.com When unpacking, make sure that the product is intact and undamaged�...
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Page 2: Table Of Contents
Do not expose compressor to rain or wet which may ignite the dust or fumes� conditions. Water entering a compressor will increase the risk of electric shock� c� Keep children and bystanders away from an operating compressor. Page 2 For technical questions, please call 1-888-866-5797. Item 64857... -
Page 3: Air Compressor Safety Warnings
Do not cover compressor during use. working pressure of 150 PSI, or 150% of the 7� Drain Tank daily and after use� Internal rust causes maximum system pressure, whichever is greater� tank failure and explosion� Item 64857 For technical questions, please call 1-888-866-5797. Page 3... - Page 4 5� Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacles that accept the compressor’s plug� Page 4 For technical questions, please call 1-888-866-5797. Item 64857...
- Page 5 105 PSI Air Tank Capacity 20 Gallons Air Flow Capacity 4�0 SCFM @ 90 PSI Sound Level 85 dBA Oil Capacity 5�6 oz� Oil Type SAE 30W, non-detergent, Air Compressor Oil Item 64857 For technical questions, please call 1-888-866-5797. Page 5...
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Page 6: Installation
For additional information regarding the parts listed in the following pages, refer to the Assembly Diagram near the end of this manual� Functions tank Outlet Gauge Gauge power Switch Safety Valve Breather air Outlet (behind Handle) regulator Drain Valve Page 6 For technical questions, please call 1-888-866-5797. Item 64857... - Page 7 Spring Washers (98) and Nuts (99)� Wheel Washer (98 ) (99) Bolt (96) Washer (95) Sleeve (97) bracket on tank install air Filter Thread the Air Filter onto the side of the Pump/Motor Assembly� Filter Item 64857 For technical questions, please call 1-888-866-5797. Page 7...
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Page 8: Checking The Oil
FrOM BUrnS: Do not add or change the oil while the compressor is in operation. allow the compressor to cool before replacing oil. Sight Glass OVerFill FUll Page 8 For technical questions, please call 1-888-866-5797. Item 64857... - Page 9 Item 64857 For technical questions, please call 1-888-866-5797. Page 9...
- Page 10 Page 10 For technical questions, please call 1-888-866-5797. Item 64857...
- Page 11 Item 64857 For technical questions, please call 1-888-866-5797. Page 11...
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Page 12: Compressor Area Set Up
105 PSI, 100 Operation Hours: on page 14. and will turn off automatically when the air pressure reaches 135 PSI� 17� Clean, then store the Air Compressor indoors� Page 12 For technical questions, please call 1-888-866-5797. Item 64857... -
Page 13: Emergency Depressurization
(about 10 minutes); on again too quickly� e� Plug in Compressor� f� Turn Power Switch ON� 3� Correct any issues before further use to avoid damage to the compressor� g� Resume operation� Item 64857 For technical questions, please call 1-888-866-5797. Page 13... -
Page 14: Maintenance Schedule
Air Compressor is pressurized� Look for air bubbles� ** To clean the compressor surface, wipe with *** Use SAE 30W, non-detergent, a damp cloth, using a mild detergent or mild solvent� Air Compressor Oil only (sold separately)� Page 14 For technical questions, please call 1-888-866-5797. Item 64857... -
Page 15: Oil Maintenance
Replace the filter more often if compressor is used in dirty environments� 1� Remove the Cover� 3� Replace with a new Air Filter� 2� Remove the Air Filter� 4� Replace the Cover� Item 64857 For technical questions, please call 1-888-866-5797. Page 15... -
Page 16: Troubleshooting
If Compressor cannot supply enough air flow (CFM), use a larger Compressor� Follow all safety precautions whenever diagnosing or servicing the compressor. Disconnect power supply before service. Page 16 For technical questions, please call 1-888-866-5797. Item 64857... -
Page 17: Please Read The Following Carefully
If product has no serial number, record month and year of purchase instead� note: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts� Item 64857 For technical questions, please call 1-888-866-5797. Page 17... -
Page 18: Parts List
Wheel Seal Washer Valve Plate Bolt M12x60 Reed Valve Sleeve Reed Valve Spring Washer Seal Air Filter Drain Valve Bolt M6x50 Foot Spring Washer Washer Washer Bolt M8x25 Start Valve Page 18 For technical questions, please call 1-888-866-5797. Item 64857... -
Page 19: Assembly Diagram
59 60 50 57 58 19 31 62 66 63 67 65 64 24 25 26 21 22 9 10 16 17 5 6 7 13 14 15 11 12 94 95 Item 64857 For technical questions, please call 1-888-866-5797. Page 19... -
Page 20: Warranty
limited 90 Day Warranty Harbor Freight Tools Co� makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of 90 days from the date of purchase�...
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Questions and answers
Ocupo la parte #19 para poner el regulador
@Antonio disculpe podría pasarme ese diagrama que tiene?
it runs and will not send air out of hose
The McGraw 64857 may not be sending air out of the hose due to several possible causes:
1. Tank Already Pressurized – If the tank is already at the required pressure, the compressor will not send more air until needed.
2. Power Issues – The power cord may not be plugged in properly, the power supply may be incorrect, or the outlet may not have power.
3. Circuit Issues – A tripped breaker or blown fuse in the building’s power supply could prevent the compressor from operating.
4. Air Hose or Valve Blockage – A closed or malfunctioning in-line shutoff valve or a blockage in the air hose may be restricting airflow.
5. Regulator or Filter Issues – A malfunctioning pressure regulator or clogged air filter could be preventing air from flowing properly.
Check these components to diagnose and fix the issue.
This answer is automatically generated
why does it not send air out of hose?
What is 64857
The McGraw part number 64857 refers to an air compressor.
This answer is automatically generated
What is the part number for the air filter