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SKU 99780-81 

For technical questions, please call 1-800-444-3353. 

Page 8

Connect a 1/4” NPT air hose (rated 

9. 

155 PSI or higher) to the air con-

nection.  The air hose must be long 

enough to reach the work area with 

enough extra length to allow free 

movement while working.
Incorporate an in-line oiler, shut-off 

10. 

valve, regulator with pressure gauge, 

and filter for best service, as shown in 

the diagram below.  An in-line shutoff 

valve is an important safety device 

because it controls the air supply 

even if the air hose is ruptured.

tool

air 

compressor

Quick 

coupler

air hose 

on reel

Filter

regulator with 

pressure gauge

male 

connector

male 

connector

Valve

Quick 

coupler

recommended air line components

Oiler

Operating instructiOns

  read the entire impOrtant 

saFetY inFOrmatiOn 

section at the beginning of this 

manual including all text under 

subheadings therein before set 

up or use of this product.

 

tO preVent 

seriOus injurY 

FrOm accidental 

OperatiOn: 

turn the power switch of the 

tool to its “OFF” position and 

unplug the tool from its 

electrical outlet before 

performing any inspection, 

maintenance, or cleaning 

procedures.

Make sure the air tool’s throttle or 

1. 

switch is in the off position.
Connect the tool that will be used for 

2. 

the job to the airline.  
Close the in-line safety valve be-

3. 

tween the compressor and the tool.
Connect an air hose rated to the in-

4. 

tended PSI that will be used with the 

tool to the Air Connection.  The air 

hose must be long enough to reach 

the work area with enough extra 

length to allow free movement while 

working.
Plug the Power Cord into a grounded 

5. 

120 V electrical outlet.
Move the Power Switch to its ON 

6. 

position. 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of Contents for 99780

Page 1: ...ghts 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 m...

Page 2: ...indicates a hazardous situation which if not avoided could result in minor or moderate injury NOTICE is used to address practices not related to personal injury CAUTION without the safety alert symbo...

Page 3: ...urce or moving the tool Do not overreach Keep proper d footing and balance at all times This enables better control of the tool in unexpected situations Dress properly Do not wear loose e clothing or...

Page 4: ...o reduce the risk of electric shock do not expose to rain Store indoors Do not use to supply breathing air 4 Do not direct air flow from the Com 5 pressor at people or animals Industrial applications...

Page 5: ...ncer and birth defects or other reproductive harm Wash hands after handling Califor nia Health Safety Code 25249 5 et seq The warnings precautions and in 15 structions discussed in this instruction ma...

Page 6: ...rds Association Underwriters Laboratories Inc V Volts Alternating Current A Amperes n0 xxxx min No Load Revolutions per Minute RPM Specifications Electrical Requirements 120 V 60 Hz 9 3 A Air Hose Con...

Page 7: ...3 bottom of the Air Tank 30 Secure using four Knobs 29 See Figure 1 To connect the Wheels 38 first put 4 a washer 35 at the end of each Axle 34 See Figure 2 Put the Axles 34 in the wheel brack 5 ets...

Page 8: ...ns Read the entire Important Safety Information section at the beginning of this manual including all text under subheadings therein before set up or use of this product To prevent serious injury from...

Page 9: ...reaker will trip and it will shut off If this happens move the Power Switch to the OFF a position wait until the Compressor cools b down push the Circuit Breaker button c turn Power Switch back to the...

Page 10: ...condition that may affect its safe operation After Use 2 clean external surfaces of the tool with clean cloth 3 WARNING If the supply cord of this power tool is damaged it must be replaced only by a...

Page 11: ...0 Washer 3 11 Bolt 3 12 Washer 3 13 Bracket Washer 3 14 Regulator 1 15 Screw ST4x18 4 16 Screw ST4x20 2 17 Cord Retainer 1 18 Rear Handle 1 19 Connector 1 20 Valve 1 Parts List Part Description Qty 21...

Page 12: ...Page 12 ASSEMBLY DIAGRAM Record Product s Serial Number Here Note If product has no serial number record month and year of purchase instead Note Some parts are listed and shown for illustration purpos...

Page 13: ...of this warranty the product or part must be returned to us with trans portation charges prepaid Proof of purchase date and an explanation of the complaint must accompany the merchandise If our inspec...

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