Predator 57509 Owner'S Manual & Safety Instructions Download Page 1

4400 WATT

PORTABLE

INVERTER

GENERATOR

 

3500 RUNNING WATTS 

 

4400 MAX STARTING WATTS

Visit our website at: http://www.harborfreight.com

Email our technical support at: [email protected]

Email our engine support at: [email protected]

57509

Using a generator indoors CAN 

KILL YOU IN MINUTES.
Generator exhaust contains 

carbon monoxide.  This is a poison 

you cannot see or smell.

NEVER use inside 

a home or garage, 

EVEN IF doors and 

windows are open.

Only use OUTSIDE 

and far away from 

windows, doors, 

and vents.

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. 

21c

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

©

 2020 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 service may not be included.

Read this material before using this product. 

Failure to do so can result in serious injury. 

SAVE THIS MANUAL.

Summary of Contents for 57509

Page 1: ...oduct 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 ref...

Page 2: ...1 Engine Type Horizontal Single Cylinder 4 stroke OHV Cooling System Forced air cooled Fuel Type 87 octane stabilizer treated unleaded gasoline Capacity 3 2 Gallons Engine Oil Type SAE 10W 30 Capacit...

Page 3: ...of Eye Injury Wear ANSI approved safety goggles with side shields Read the manual before set up and or use Symbol Property or Statement WARNING marking concerning Risk of Hearing Loss Wear hearing pro...

Page 4: ...Generator may explode burn or cause fires when utility power is restored Consult the utility company and a qualified electrician if intending to use the Generator for back up power 10 Do not operate t...

Page 5: ...body contact with grounded surfaces such as pipes radiators ranges and refrigerators 20 Only use a suitable means of transport and lifting devices with sufficient weight bearing capacity when transpor...

Page 6: ...amaged have the generator serviced before using Many accidents are caused by poorly maintained generators 41 Use the correct generator for the application Do not modify the generator and do not use th...

Page 7: ...safety goggles heavy duty work gloves and dust mask respirator during service 6 Maintain labels and nameplates on the generator These carry important information If unreadable or missing contact Harb...

Page 8: ...h altitudes the engine s carburetor governor and any other parts that control the fuel air ratio will need to be adjusted by a qualified mechanic to allow efficient high altitude use and to prevent da...

Page 9: ...Kit Terminals Economy ESC Switch 120VAC Breaker Reset Buttons Main Breaker Reset Button Engine Switch USB Ports Carbon Monoxide Alarm Figure A Control Panel WARNING TO PREVENT SERIOUS INJURY Follow Pa...

Page 10: ...0 oil is recommended for general use 5 Thread the Oil Fill Cap Dipstick back in clockwise NOTICE Do not run the engine with too little oil Engine will shut off if engine oil level is too low Checking...

Page 11: ...carburetor Then pull the Starter Handle gently until resistance is felt Allow Cable to retract fully and then pull it quickly Repeat until the Engine starts Do not let the Starter Handle snap back aga...

Page 12: ...gine will help to ensure proper generator and Engine operation b The break in period will last about 30 hours of use DO NOT exceed 75 of the Generator s running wattage during this period Change the e...

Page 13: ...Engine and reconnect devices while being careful to not overload Generator Low Oil Indicator 1 If the Engine oil level is too low the LOW OIL light turns on and the Engine will automatically shut off...

Page 14: ...r instead Cleaning Maintenance and Lubrication Schedule Note This maintenance schedule is intended solely as a general guide If performance decreases or if generator operates unusually check systems i...

Page 15: ...excess to evaporate before starting engine To prevent FIRE do not start the engine while the smell of fuel hangs in the air Engine Oil Change CAUTION Oil is very hot during operation and can cause bur...

Page 16: ...using a wire brush sold separately Replace arrestor if damaged 4 WARNING TO PREVENT SERIOUS INJURY FROM ACCIDENTAL BRUSH FIRE secure Spark Arrestor back in place immediately after cleaning and before...

Page 17: ...PREVENT SERIOUS INJURY FROM FIRE Drain the fuel tank in a well ventilated area away from ignition sources If the engine is hot from use shut the engine off and wait for it to cool before draining fuel...

Page 18: ...r Reinstall spark plug and set Choke to START position 9 Replace Fuel Filter IGNITION SPARK RELATED 1 Engine Switch in OFF position 2 Spark plug cap not connected securely 3 Spark plug electrode wet o...

Page 19: ...technician service magneto 7 Secure spark plug cap Engine stops when under heavy load 1 Dirty air filter 2 Engine running cold 1 Clean element 2 Allow engine to warm up prior to operating generator E...

Page 20: ...e 1 35 Engine Oil Sensor 1 36 Hex Flange Bolt M6 x 16 7 37 Bearing 2 38 Oil Seal 2 39 Alternator Stator 1 40 Rubber Stopper 4 41 Oil Alert 1 Part Description QTY 42 Shroud 1 43 Hex Flange Bolt M6 x 28...

Page 21: ...ation Maintenance Setup Engine Assembly Diagram 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 25 23 26 24 27 28 29 30 28 31 32 33 34 35 36 37 38 32 33 4 43 44 45 46 47 48 56 57 54 54 55 37...

Page 22: ...cription 22 Bracket 23 Flange Bolt 24 Ground Wire 25 Toothed Washer 26 Flange Nut 27 Frame Damping Pad 28 Damper Cable Assembly 29 Air Filter Support Block 30 Damping Support 31 Flange Nut 32 Mounting...

Page 23: ...estions please call 1 888 866 5797 ITEM 57509 Safety Operation Maintenance Setup Generator Assembly Diagram 1 2 3 4 7 10 11 12 16 17 23 24 26 25 27 30 31 34 18 21 22 19 20 35 36 13 14 15 28 5 6 9 8 29...

Page 24: ...ANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT IN FACT THE MANUFACTURER AND OR DISTRIBU...

Page 25: ...the exclusion or limitation of incidental or consequential damages so the above limitation of exclusion may not apply to you THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLI...

Page 26: ...l repair or replace at our option any emissions related part on your engine if it becomes defective malfunctions or otherwise fails to conform with this warranty under normal use and service during th...

Page 27: ...ctions contained in this manual neglect improper maintenance or unapproved modifications In order to obtain warranty repair or replacement you may either a contact HFT product support at 1 888 866 579...

Page 28: ...26541 Agoura Road Calabasas CA 91302 1 888 866 5797...

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