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ITEM 69733 

        

SAFETY

Op
ERA
TION

M

AINTENANCE

SETU
p

Set up precautions

1.  Gasoline fuel and fumes are flammable, and 

potentially explosive.  Use proper fuel storage 

and handling procedures.  Do not store fuel 

or other flammable materials nearby.

2.  Have multiple ABC class fire extinguishers nearby.
3.  Operation of this equipment may create sparks 

that can start fires around dry vegetation. A spark 

arrestor may be required. The operator should 

contact local fire agencies for laws or regulations 

relating to fire prevention requirements.

4.  Set up and use only on a flat, level, 

well-ventilated surface.

5.  Wear ANSI-approved safety goggles, heavy-duty 

work gloves, and dust mask/respirator during set up.

6.  Use only lubricants and fuel recommended 

in the Specifications chart of this manual.

Operating precautions

1. 

CARBON MONOXIDE HAZARD 

Using an engine indoors CAN KILL 

YOU IN MINUTES. 

Engine 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.

2.  Keep children away from the equipment, 

especially while it is operating. 

3.  Keep all spectators at least six feet 

from the Engine during operation.

4.  Fire Hazard! Do not fill gas tank while engine is 

running. Do not operate if gasoline has been spilled. 

Clean spilled gasoline before starting engine. 

Do not operate near pilot light or open flame.

5.  Do not touch engine during use. 

Let engine cool down after use. 

6.  Never store fuel or other flammable 

materials near the engine.

7.  Only use a suitable means of transport and 

lifting devices with sufficient weight bearing 

capacity when transporting the Engine.

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 when it is 

running.  Turn off the equipment (and remove safety 

keys, if available) before leaving the work area.

11.  Engine can produce high noise levels.  

Prolonged exposure to noise levels 

above 85 dBA is hazardous to hearing. 

Always wear ear protection when operating or 

working around the gas engine while it is operating.

12. Wear ANSI-approved safety glasses, hearing 

protection, and NIOSH-approved dust mask/

respirator under a full face shield along 

with steel-toed work boots during use.

13. People with pacemakers should consult their 

physician(s) before use.  Electromagnetic fields in 

close proximity to a heart pacemaker could cause 

pacemaker interference or pacemaker failure.  

Caution is necessary when near the 

engine’s magneto or recoil starter.

14. Use only accessories that are recommended 

by Harbor Freight Tools for your model.  

Accessories that may be suitable for one 

piece of equipment may become hazardous 

when used on another piece of equipment.

15. Do not operate in explosive atmospheres, 

such as in the presence of flammable 

liquids, gases, or dust.  Gasoline-powered 

engines may ignite the dust or fumes.

16. Stay alert, watch what you are doing and 

use common sense when operating this 

piece of equipment.  Do not use this piece 

of equipment while tired or under the 

influence of drugs, alcohol or medication.

17. Do not overreach.  Keep proper footing and 

balance at all times.  This enables better control 

of the equipment in unexpected situations.

18. Use this equipment with both hands 

only.  Using equipment with only one hand 

can easily result in loss of control.

19. Dress properly.  Do not wear loose clothing or 

jewelry.  Keep hair, clothing and gloves away 

from moving parts.  Loose clothes, jewelry or 

long hair can be caught in moving parts.

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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