McGraw 64857 Manuel utilisateur
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Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
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� 18j
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®� All rights reserved�
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 s er vi ce m ay n ot be i nc lu de d�
Read this material before using this product�
Failure to do so can result in serious injury�
SAVE THIS MANUAL�
Page 2 @+-*)/93='91<*A,/()'+=(B*4</1(/*91<<*CD###D#!!D$%E%6 Item 64857
FG@;HI JK;LGHMJN OGMNH;NGNP;MNFHGQQGHMJN
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Safety ��������������������������������������������������������� 2
Installation �������������������������������������������������� 6
Specifications ��������������������������������������������� 6
Operation ��������������������������������������������������� 12
Maintenance ���������������������������������������������� 14
Parts List and Diagram ������������������������������ 18
Warranty ���������������������������������������������������� 20
RGLNMNS*FIOTJQF*GNU*U;@MNMHMJNF
This is the safety alert symbol� It is used to alert you to potential
personal injury hazards� Obey all safety messages that
follow this symbol to avoid possible injury or death�
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury�
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury�
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury�
Addresses practices not related to personal injury�
MOKJLHGNH*FG@;HI*MN@JLOGHMJN
S/=/-1<*F17/)V*R1-='=8(
* RGLNMNS*L/1>*1<<*(17/)V*.1-='=8(*1=>*'=()-,9)'+=(6***
Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.
F1W/*1<<*.1-='=8(*1=>*'=()-,9)'+=(*7+-*7,),-/*-/7/-/=9/6
The warnings, precautions, and instructions discussed in this instruction manual cannot cover all possible
conditions and situations that may occur� It must be understood by the operator that common sense
and caution are factors which cannot be built into this product, but must be supplied by the operator�
1� R+-X*1-/1*(17/)V
a� Y//4*.+-X*1-/1*9</1=*1=>*./<<*<')6
Cluttered or dark areas invite accidents�
b� U+*=+)*+4/-1)/*)3/*P+:4-/((+-*'=*/Z4<+('W/*
1):+(43/-/(B*(,93*1(*'=*)3/*4-/(/=9/*
+7*7<1::10</*<'A,'>(B*81(/(*+-*>,()6
Compressor motors produce sparks
which may ignite the dust or fumes�
c� Y//4*93'<>-/=*1=>*0V()1=>/-(*1.1V*
7-+:*1=*+4/-1)'=8*9+:4-/((+-6
2� ;</9)-'91<*(17/)V
a� P+:4-/((+-*4<,8(*:,()*:1)93*)3/*+,)</)6**
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U+*=+)*,(/*1=V*1>14)/-*4<,8(*.')3*8-+,=>/>*
9+:4-/((+-(6 Standard plugs and matching
outlets will reduce risk of electric shock�
b� U+*=+)*/Z4+(/*9+:4-/((+-*)+*-1'=*+-*./)*
9+=>')'+=(6 Water entering a compressor
will increase the risk of electric shock�
Page 3@+-*)/93='91<*A,/()'+=(B*4</1(/*91<<*CD###D#!!D$%E%6Item 64857
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c� U+*=+)*10,(/*)3/*9+->6**N/W/-*,(/*)3/*
9+->*7+-*,=4<,88'=8*)3/*9+:4-/((+-6**
Y//4*9+->*1.1V*7-+:*3/1)B*+'<B*(31-4*/>8/(*
+-*:+W'=8*41-)(6**Damaged or entangled
cords increase the risk of electric shock�
3� K/-(+=1<*(17/)V
a� F)1V*1</-)B*.1)93*.31)*V+,*1-/*>+'=8*1=>*
,(/*9+::+=*(/=(/*.3/=*+4/-1)'=8*)3'(*
9+:4-/((+-6**U+*=+)*,(/*)3'(*9+:4-/((+-*
.3'</*V+,*1-/*)'-/>*+-*,=>/-*)3/*'=7<,/=9/*
+7*>-,8(B*1<9+3+<*+-*:/>'91)'+=6 A moment
of inattention while operating a compressor
may result in serious personal injury�
b� [(/*4/-(+=1<*4-+)/9)'W/*/A,'4:/=)6**
G<.1V(*./1-*GNFMD144-+W/>*/V/*
4-+)/9)'+=*>,-'=8*(/),4*1=>*,(/6
c� K-/W/=)*,='=)/=)'+=1<*()1-)'=86**;=(,-/*)3/*
(.')93*'(*'=*)3/*+77D4+(')'+=*0/7+-/*9+==/9)'=8*
)+*4+./-*(+,-9/*+-*:+W'=8*)3/*9+:4-/((+-6
4� P+:4-/((+-*,(/*1=>*91-/
a� U+*=+)*,(/*)3/*9+:4-/((+-*'7*)3/*(.')93*
>+/(*=+)*),-=*')*+=*1=>*+776 Any compressor
that cannot be controlled with the switch
is dangerous and must be repaired�
b� U'(9+==/9)*)3/*4<,8*7-+:*)3/*4+./-*(+,-9/*
0/7+-/*:1X'=8*1=V*1>\,():/=)(B*931=8'=8*
199/((+-'/(B*+-*()+-'=8*)3/*9+:4-/((+-6
Such preventive safety measures reduce the
risk of starting the compressor accidentally�
c� F)+-/*1=*'></*9+:4-/((+-*+,)*+7*)3/*-/193*
+7*93'<>-/=*1=>*>+*=+)*1<<+.*4/-(+=(*
,=71:'<'1-*.')3*)3/*9+:4-/((+-*+-*)3/(/*
'=()-,9)'+=(*)+*+4/-1)/*')6 A compressor is
dangerous in the hands of untrained users�
d� O1'=)1'=*)3/*9+:4-/((+-6**Y//4*)3/*
9+:4-/((+-*9</1=*7+-*0/))/-*1=>*(17/-*
4/-7+-:1=9/6**@+<<+.*'=()-,9)'+=(*7+-*
<,0-'91)'=8*1=>*931=8'=8*199/((+-'/(6**
Y//4*>-VB*9</1=*1=>*7-//*7-+:*+'<*1=>*8-/1(/6**
P3/9X*7+-*:'(1<'8=:/=)*+-*0'=>'=8*+7*:+W'=8*
41-)(B*0-/1X18/*+7*41-)(*1=>*1=V*+)3/-*
9+=>')'+=*)31)*:1V*177/9)*)3/*9+:4-/((+-](*
+4/-1)'+=6**M7*>1:18/>B*31W/*)3/*9+:4-/((+-*
-/41'-/>*0/7+-/*,(/6 Many accidents are
caused by a poorly maintained compressor�
e� [(/*)3/*9+:4-/((+-*'=*199+->1=9/*.')3*
)3/(/*'=()-,9)'+=(B*)1X'=8*'=)+*199+,=)*
)3/*.+-X'=8*9+=>')'+=(*1=>*)3/*.+-X*)+*
0/*4/-7+-:/>6 Use of the compressor for
operations different from those intended
could result in a hazardous situation�
5� F/-W'9/
a� ^1W/*V+,-*9+:4-/((+-*(/-W'9/>*0V*1*
A,1<'7'/>*-/41'-*4/-(+=*,('=8*+=<V*'>/=)'91<*
-/4<19/:/=)*41-)(6 This will ensure that the
safety of the compressor is maintained�
G'-*P+:4-/((+-*F17/)V*R1-='=8(
1� L'(X*+7*7'-/*+-*/Z4<+('+=*D*>+*=+)*(4-1V*
7<1::10</*<'A,'>*'=*1*9+=7'=/>*1-/1*+-*)+.1->(*1*
3+)*(,-719/6**F4-1V*1-/1*:,()*0/*./<<DW/=)'<1)/>6**
U+*=+)*(:+X/*.3'</*(4-1V'=8*+-*(4-1V*.3/-/*
(41-X*+-*7<1:/*'(*4-/(/=)6**G-9'=8*41-)(*D*X//4*
9+:4-/((+-*1)*</1()*_`*7//)*1.1V*7-+:*/Z4<+('W/*
W14+-(B*(,93*1(*.3/=*(4-1V'=8*.')3*1*(4-1V*8,=6
2� L'(X*+7*0,-()'=8*D*>+*=+)*1>\,()*-/8,<1)+-*3'83/-*
)31=*:1-X/>*:1Z':,:*4-/((,-/*+7*1))193:/=)6
3� L'(X*+7*'=\,-V*D*>+*=+)*>'-/9)*1'-*
()-/1:*1)*4/+4</*+-*1=':1<(6
4� U+*=+)*,(/*)+*(,44<V*0-/1)3'=8*1'-6
5� U+*=+)*</1W/*9+:4-/((+-*,=1))/=>/>*
7+-*1=*/Z)/=>/>*4/-'+>*.3'</*4<,88/>*'=6**
[=4<,8*9+:4-/((+-*17)/-*.+-X'=86
6� Y//4*9+:4-/((+-*./<<DW/=)'<1)/>6**
U+*=+)*9+W/-*9+:4-/((+-*>,-'=8*,(/6
7� Drain Tank daily and after use� Internal rust causes
tank failure and explosion�
8� Add correct amount of compressor oil before first
use and every use� Operating with low or no oil
causes permanent damage and voids warranty�
9� Do not remove the valve cover or
adjust internal components�
10� Compressor head gets hot during operation�
Do not touch it or allow children nearby
during or immediately following operation�
11� Do not use the air hose to move the compressor�
12� Release the pressure in the
storage tank before moving�
13� The use of accessories or attachments not
recommended by the manufacturer may
result in a risk of injury to persons�
14� All air line components, including hoses, pipe,
connectors, filters, etc�, must be rated for a minimum
working pressure of 150 PSI, or 150% of the
maximum system pressure, whichever is greater�
Page 4 @+-*)/93='91<*A,/()'+=(B*4</1(/*91<<*CD###D#!!D$%E%6 Item 64857
FG@;HI JK;LGHMJN OGMNH;NGNP;MNFHGQQGHMJN
15� USE OF AN EXTENSION CORD IS NOT
RECOMMENDED� If you choose to use an
extension cord, use the following guidelines:
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25′ 50′ 100′ 150′
0 – 6 18 16 16 14
6�1 – 10 18 16 U+*=+)*,(/6
10�1 – 12 16 16 U+*=+)*,(/6
12�1 – 16 14 12 U+*=+)*,(/6
a� Make sure your extension cord
is in good condition�
b� Be sure to use an extension cord which
is heavy enough to carry the current your
product will draw� An undersized cord will
cause a drop in line voltage resulting in loss
of power and overheating� Table A shows the
correct size to use depending on cord length
and nameplate ampere rating� If in doubt,
use the next heavier gauge� The smaller
the gauge number, the heavier the cord�
16� Industrial applications must follow OSHA guidelines�
17� Maintain labels and nameplates on the
compressor� These carry important safety
information� If unreadable or missing, contact
Harbor Freight Tools for a replacement�
18� This product is not a toy�
Keep it out of reach of children�
19� Operate unit on level surface� Check oil level
daily and fill to marked level if needed�
20� People with pacemakers should consult their
physician(s) before use� Electromagnetic fields in
close proximity to heart pacemaker could cause
pacemaker interference or pacemaker failure�
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4-+4/-<V*8-+,=>/>6**U+*=+)*:+>'7V*)3/*4+./-*9+->*4<,8*4-+W'>/>*.')3*)3/*9+:4-/((+-6**
N/W/-*-/:+W/*)3/*8-+,=>'=8*4-+=8*7-+:*)3/*4<,86**U+*=+)*,(/*)3/*9+:4-/((+-*'7*)3/*4+./-*9+->*+-*4<,8*
'(*>1:18/>6**M7*>1:18/>B*31W/*')*-/41'-/>*0V*1*(/-W'9/*719'<')V*0/7+-/*,(/6**M7*)3/*4<,8*.'<<*=+)*7')*)3/*+,)</)B*
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CC`DC_`*&GP*S-+,=>/>*P+:4-/((+-(2*P+:4-/((+-(*.')3*H3-//*K-+=8*K<,8(
1� In the event of a malfunction or breakdown,
grounding provides a path of least resistance for
electric current to reduce the risk of electric shock�
This compressor is equipped with an electric
cord having an equipment-grounding conductor
and a grounding plug� The plug must be
plugged into a matching outlet that is properly
installed and grounded in accordance
with all local codes and ordinances�
2� Do not modify the plug provided –
if it will not fit the outlet, have the proper
outlet installed by a qualified electrician�
3� Improper connection of the equipment-grounding
conductor can result in a risk of electric shock�
The conductor with insulation having an outer
surface that is green with or without yellow
stripes is the equipment-grounding conductor�
If repair or replacement of the electric cord or
plug is necessary, do not connect the equipment-
grounding conductor to a live terminal�
4� Check with a qualified electrician or service
personnel if the grounding instructions are
not completely understood, or if in doubt as to
whether the compressor is properly grounded�
5� Use only 3-wire extension cords that have
3-prong grounding plugs and 3-pole receptacles
that accept the compressor’s plug�
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FG@;HIJK;LGHMJNOGMNH;NGNP; MNFHGQQGHMJN
6� Repair or replace damaged or
worn cord immediately�
S-+,=>'=8*
K'=
C_$*&GP*dDK-+=8*K<,8*1=>*J,)</)
b7+-*,4*)+*C_$*&GP*1=>*,4*)+*C$*Gc
7� This compressor is intended for use on a
circuit that has an outlet that looks like the one
illustrated above in C_$*&GP*dDK-+=8*K<,8*
1=>*J,)</)� The compressor has a grounding
plug that looks like the plug illustrated above
in C_$*&GP*dDK-+=8*K<,8*1=>*J,)</)�
8� The outlet must be properly installed and grounded
in accordance with all codes and ordinances�
9� Do not use an adapter to connect this
compressor to a different outlet�
FV:0+<+8V
KFM Pounds per square inch of pressure
P@O Cubic Feet per Minute flow
FP@O Cubic Feet per Minute flow
at standard conditions
NKH National pipe thread, tapered
NKF National pipe thread, straight
Double Insulated
&Volts
eAlternating Current
GAmperes
F4/9'7'91)'+=(
Electrical Rating 120VAC / 60Hz / 14A
(Dedicated circuit recommended)
Air Outlet Size 1/4″ -18 NPT
Air Pressure Shut-off 135 PSI
Restart 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
Page 6 @+-*)/93='91<*A,/()'+=(B*4</1(/*91<<*CD###D#!!D$%E%6 Item 64857
FG@;HI JK;LGHMJN OGMNH;NGNP;MNFHGQQGHMJN
*M=()1<<1)'+=
* L/1>*)3/*;NHML;*MOKJLHGNH*FG@;HI*MN@JLOGHMJN*(/9)'+=*1)*)3/*0/8'=='=8*+7*)3'(*
:1=,1<*'=9<,>'=8*1<<*)/Z)*,=>/-*(,03/1>'=8(*)3/-/'=*0/7+-/*(/)*,4*+-*,(/*+7*)3'(*4-+>,9)6
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H,-=*)3/*K+./-*F.')93*gJ@@h*1=>*,=4<,8*)3/*G'-*P+:4-/((+-*7-+:*')(*/</9)-'91<*
+,)</)*0/7+-/*1((/:0<'=8*+-*:1X'=8*1=V*1>\,():/=)(*)+*)3/*9+:4-/((+-6
N+)/2 For additional information regarding the parts listed in the following pages,
refer to the Assembly Diagram near the end of this manual�
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Page 7@+-*)/93='91<*A,/()'+=(B*4</1(/*91<<*CD###D#!!D$%E%6Item 64857
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G))193*R3//<(
Attach the Wheels to the brackets on the Tank,
using Bolts (96), Washers (95), Sleeves (97),
Spring Washers (98) and Nuts (99)�
T+<)*
bE!c
R3//<
0-19X/)
+=*H1=X
R1(3/-*
bE$c
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bEEc
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Thread the Air Filter onto the side of
the Pump/Motor Assembly�
G'-*
@'<)/-
Page 8 @+-*)/93='91<*A,/()'+=(B*4</1(/*91<<*CD###D#!!D$%E%6 Item 64857
FG@;HI JK;LGHMJN OGMNH;NGNP;MNFHGQQGHMJN
P3/9X'=8*)3/*J'<
1� Check the oil level before operation�
Fill the Pump Crankcase with included
SAE 30W, non-detergent, Air Compressor Oil�
MOKJLHGNH2 L,=='=8*)3/*G'-*P+:4-/((+-*
.')3*=+*+'<*+-*<+.*+'<*.'<<*91,(/*>1:18/*)+*
)3/*/A,'4:/=)*1=>*W+'>*)3/*.1--1=)V6
2� The oil level should be at the center of the “full” level
on the Oil Sight Glass�
Add oil as needed to maintain this level�
Do not let the oil level go below
the center dot and do not overfill the oil
so that it is above the center dot�
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3� To add oil:
a� Remove the Oil Breather�
b� Using a funnel to avoid spills, pour enough
oil into the Pump Crankcase to reach
the “full” level in the Oil Sight Glass�
c� Replace the Oil Breather�
N+)/2 SAE 30W, non-detergent,
Air Compressor Oil (sold separately) is
recommended for use with this compressor�
4� If uncertain which oil to use for this compressor,
call Harbor Freight Tools customer service
at 1-888-866-5797 for assistance�
5� P31=8/*)3/*9+:4-/((+-*+'<*17)/-*)3/*7'-()*
3+,-*+7*,(/*)+*-/:+W/*1=V*>/0-'(6
PG[HMJNi*HJ*KL;&;NH*MNf[LI*@LJO*T[LNF2**
U+*=+)*1>>*+-*931=8/*)3/*+'<*.3'</*
)3/*9+:4-/((+-*'(*'=*+4/-1)'+=6**
G<<+.*)3/*9+:4-/((+-*)+*9++<*0/7+-/*-/4<19'=8*+'<6
Page 9@+-*)/93='91<*A,/()'+=(B*4</1(/*91<<*CD###D#!!D$%E%6Item 64857
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T-/1X'=8*'=*)3/*P+:4-/((+-
1� Turn the Power Switch OFF and unplug Power Cord�
2� Fully open Drain Valve�
3� Plug in the Power Cord�
4� Turn the Power Switch ON�
5� Let the unit run for 30 minutes�
Air will expel freely through the Drain Valve�
6� Turn the Power Switch OFF�
7� Unplug the Power Cord and close Drain Valve�
G'-*P+==/9)'+=*F/),4
1� Connect a regulator valve, an inline shut off valve
and a 1/4″ NPT air hose to the Quick Coupler
(all sold separately)� The air hose must be long
enough to reach the work area with enough extra
length to allow free movement while working�
N+)/2 G=*'=D<'=/*(3,)+77*01<<*W1<W/*'(*1=*':4+-)1=)*
(17/)V*>/W'9/*0/91,(/*')*9+=)-+<(*)3/*1'-*(,44<V*/W/=*
'7*)3/*1'-*3+(/*'(*-,4),-/>6**H3/*(3,)+77*W1<W/*(3+,<>*
0/*1*01<<*W1<W/*0/91,(/*')*91=*0/*9<+(/>*A,'9X<V6
2� Depending on the tool that will be used
with this compressor, incorporate additional
components, such as an in-line oiler, a filter,
or a dryer (all sold separately), as shown on
Figure A on page 10 and Figure B on page 11�
Consult air tool’s manual for needed accessories�
Page 10 @+-*)/93='91<*A,/()'+=(B*4</1(/*91<<*CD###D#!!D$%E%6 Item 64857
FG@;HI JK;LGHMJN OGMNH;NGNP;MNFHGQQGHMJN
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A Air Hose Connects air to tool
B Filter Prevents dirt and condensation from damaging tool or workpiece
C Regulator Adjusts air pressure to tool
D Lubricator (optional) For air tool lubrication
E Coupler and Plug Provides quick connection and release
F Leader Hose (optional) Increases coupler life
G Air Cleaner / Dryer (optional) Prevents water vapor from damaging workpiece
H Air Adjusting Valve (optional) For fine tuning airflow at tool
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