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For technical questions, please call 1-888-866-5797.

ITEM 69733 

        

SAFETY

Op

ERA

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M

AINTENANCE

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Harbor Freight Tools Emission Control 

Defects Warranty provisions

1.  Length of Coverage

HFT warrants to a first retail purchaser and each 

subsequent purchaser that the engine is free from 

defects in materials and workmanship that cause the 

failure of warranted parts for a period of two (2) years 

after the date of delivery to the first retail purchaser.

2.  No Charge Repair or Replacement

Repair or replacement of any warranted part will be 

performed at no charge to the owner if the work is 

performed through a warranty station authorized by 

HFT.  For emissions warranty service, contact the HFT 

Customer Service Department at 1-888-866-5797.

3.  Consequential Damages Coverage

Coverage under this warranty shall also extend to the failure 

of any engine components caused by the failure of any 

warranted part while it is still covered under this warranty.

4.  Coverage Exclusions

Warranty claims shall be filed in accordance with the provisions 

of the HFT warranty policy explained in the box at the top of the 

previous page.  HFT shall not be liable for any loss of use of 

the engine, for any alternative usage, for any damage to goods, 

loss of time, or inconvenience.  Warranty coverage shall also be 

excluded for any part which fails, malfunctions, or is damaged 

due to failure to follow the maintenance and operating instructions 

set forth in the Owner’s Manual including, but not limited to:
a)  Use of parts which are not authorized by HFT
b)  Improper installation, adjustment or repair of the engine or 

of any warranted part unless performed by an authorized 

warranty center

c)  Failure to follow recommendations on fuel use contained in 

the Owner’s Manual

d)  Improper or inadequate maintenance of any warranted parts
e)  Repairs performed outside of the authorized warranty 

service dealers

f) 

Alterations by changing, adding to or removing parts from 

the engine.

5.  Service and Maintenance

Component parts which are not scheduled for replacement 

as required maintenance or are scheduled only for regular 

inspection to the effect of “repair or replace as necessary” 

are warranted for the warranty period. Any warranted part 

which is scheduled for replacement as required maintenance 

is warranted for the period of time up to the first scheduled 

replacement point for that part.  Any replacement part, provided 

it is equivalent in durability and performance, may be used 

in performance of maintenance or repairs.  The owner is 

responsible for commissioning a qualified technician/mechanic 

to perform all required maintenance, as outlined in the 

Inspection, Cleaning, and Maintenance section in this manual.

6.  Warranted parts

1)  Fuel Metering System

i) 

Carburetor and its internal parts.

ii)  Fuel pump (if so equipped).
iii)  Cold start enrichment system.

2)  Air Induction System

i) 

Intake pipe/manifold.

ii)  Air cleaner.

3)  Ignition System

i) 

Spark plug.

ii)  Magneto ignition system.

4)  Catalyst System (if so equipped)

i) 

Exhaust pipe stud.

ii)  Muffler.
iii)  Catalytic converter (if so equipped).

5)  Miscellaneous Items Used in Above Systems

i) 

Vacuum, temperature and time sensitive valves and 

switches.

ii)  Hoses, belts, connectors, and assemblies.

pLEASE READ THE FOLLOWING CAREFULLY

THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM 

IN THIS MANUAL AS A REFERENCE TOOL ONLY.  NEITHER THE MANUFACTURER OR DISTRIBUTOR 

MAKES ANY REPRESENTATION OR WARRANTY 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 DISTRIBUTOR EXPRESSLY 

STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND 

LICENSED TECHNICIANS, AND NOT BY THE BUYER.  THE BUYER ASSUMES ALL RISK AND LIABILITY 

ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS 

THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.

Summary of Contents for 79cc

Page 1: ...onth and year of purchase if product has no number Keep this manual and the receipt in a safe and dry place for future reference When unpacking make sure that the product is intact and undamaged If an...

Page 2: ...M 3600 RPM Compression Ratio 8 5 1 Bore x Stroke 52 mm x 37 mm 2 0 IN x 1 5 IN Fuel Type 87 octane stabilizer treated unleaded gasoline Engine Oil Capacity 0 37 Quart 0 35 L Fuel Tank Capacity 0 53 Ga...

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

Page 4: ...ngine 8 Secure the Engine on transport vehicles to prevent the tool from rolling slipping and tilting 9 Industrial applications must follow OSHA requirements 10 Do not leave the equipment unattended w...

Page 5: ...se for which it is not intended Service Precautions 1 Before service maintenance or cleaning a Turn the engine switch to its OFF position b Allow the engine to completely cool c Then remove the spark...

Page 6: ...this product The emission control system for this Engine is warranted for standards set by the U S Environmental Protection Agency For warranty information refer to the last pages of this manual WARNI...

Page 7: ...l questions please call 1 888 866 5797 ITEM 69733 Safety Operation Maintenance Setup Engine Controls Starter Handle Oil Drain Plug Serial Number Location Air Filter Muffler Choke Fuel Cap Throttle Dip...

Page 8: ...in the Service section shows other viscosities to use in different average temperatures 6 Thread the dipstick back in clockwise NOTICE Do not run the engine with too little oil The engine will be perm...

Page 9: ...Throttle when the tool is so equipped 3 Turn the Engine Switch on 4 Grip the Starter Handle of the Engine loosely and pull it slowly several times to allow the gasoline to flow into the Engine s carbu...

Page 10: ...ast about 3 hours of use During this period Do not apply a heavy load to the equipment Do not operate the engine at its maximum speed c The maintenance break in period will last about 20 hours of use...

Page 11: ...stead Cleaning Maintenance and Lubrication Schedule Note This maintenance schedule is intended solely as a general guide If performance decreases or if equipment operates unusually check systems immed...

Page 12: ...e a drain pan not included underneath the crankcase s drain plug 4 Remove the drain plug and if possible tilt the crankcase slightly to help drain the oil out Recycle used oil 5 Replace the drain plug...

Page 13: ...adually enter the Engine and cause rust damage Apply a thin coat of rust preventive oil to all metal parts 2 FUEL To protect the fuel tank during storage fill the tank with gasoline that has been trea...

Page 14: ...chamber with screwdriver handle 8 Turn Choke to RUN position Remove spark plug and pull the start handle several times to air out the chamber Reinstall spark plug and set Choke to CHOKE position 9 Re...

Page 15: ...ne Do not use gasoline with more than 10 ethanol E15 E20 E85 etc 3 Test replace fuel tank cap 4 Have qualified technician service magneto 5 Secure spark plug cap Engine stops when under heavy load 1 D...

Page 16: ...explain the emission control system warranty on your 2014 2015 Small Off Road Engine herein engine Within the United States new off road spark ignition engines certified for model year 2014 2015 must...

Page 17: ...lterations by changing adding to or removing parts from the engine 5 Service and Maintenance Component parts which are not scheduled for replacement as required maintenance or are scheduled only for r...

Page 18: ...te Subassembly Lifter Stopper 1 45 Bolt Valve Adjusting 2 Part Description Qty 46 Rocker Valve 2 47 Nut Valve Adjusting 2 48 Nut Valve Lock 2 49 Starter Assy Recoil 1 50 Bolt 3 51 Shroud 1 52 Bolt 4 5...

Page 19: ...13 16 15 14 20 19 18 21 25 88 87 87 86 83 82 85 84 64 64 63 59 59 61 60 62 55 54 53 56 51 52 52 52 52 57 58 49 50 50 50 76 77 78 79 80 80 81 38 40 42 43 44 45 46 47 42 43 45 46 47 48 39 40 41 41 48 3...

Page 20: ...ole Diagram Note Not to scale 1 in 25 5mm 2 42 in 61 5mm 4 02 in 102mm 1 44 in 36 5mm Power Take Off Diagram Note Not to scale 0 98 in 25mm 1 79 in 45 5mm 2 37 in 60 1mm 5 16 24UNF 0 1875 in 4 76mm 0...

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