Harbor Freight Tools 68120, 68306 owner manual Troubleshooting, Do not use gasoline with more than

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SAFETY

SETUP

OPERATION

MAINTENANCE

Troubleshooting

Problem

 

Possible Causes

 

Probable Solutions

Engine will not start

FUEL RELATED:

FUEL RELATED:

 

1.

No fuel in tank or fuel valve closed.

1.

Fill fuel tank and open fuel valve.

 

2.

Choke not in CHOKE position, cold engine.

2.

Move Choke to CHOKE position.

 

3.

Gasoline with more than 10% ethanol

3.

Clean out ethanol rich gasoline from fuel

 

 

used. (E15, E20, E85, etc.)

 

system. Replace components damaged

 

 

 

 

by ethanol. Use fresh 87+ octane

 

 

 

 

unleaded gasoline only.

 

 

 

 

Do not use gasoline with more than

 

 

 

 

10% ethanol (E15, E20, E85, etc.).

 

4.

Low quality or deteriorated, old gasoline.

4.

Use fresh 87+ octane unleaded gasoline.

 

 

 

 

Do not use gasoline with more than

 

 

 

 

10% ethanol (E15, E20, E85, etc.).

 

5.

Carburetor not primed.

5.

Pull on Starter Handle to prime.

 

6.

Dirty fuel passageways.

6.

Clean out passageways using

 

 

 

 

fuel additive. Heavy deposits

 

 

 

 

may require further cleaning.

 

7.

Carburetor needle stuck.

7.

Gently tap side of carburetor float

 

 

Fuel can be smelled in the air.

 

chamber with screwdriver handle.

 

8.

Too much fuel in chamber. This can be

8.

Turn Choke to RUN position.

 

 

caused by the carburetor needle sticking.

 

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.

Clogged Fuel Filter.

9.

Replace Fuel Filter.

 

IGNITION (SPARK) RELATED:

IGNITION (SPARK) RELATED:

 

1.

Spark plug cap not connected securely.

1.

Connect spark plug cap properly.

 

2.

Spark plug electrode wet or dirty.

2.

Clean spark plug.

 

3.

Incorrect spark plug gap.

3.

Correct spark plug gap.

 

4.

Spark plug cap broken.

4.

Replace spark plug cap.

 

5.

Circuit breaker tripped

5.

Reset circuit breaker. Check wiring and

 

 

(electric start models only).

 

starter motor if breaker continues to trip.

 

6.

Incorrect spark timing or

6.

Have qualified technician diagnose/

 

 

faulty ignition system.

 

repair ignition system.

 

COMPRESSION RELATED:

COMPRESSION RELATED:

 

1.

Cylinder not lubricated. Problem after long

1.

Pour tablespoon of oil into spark

 

 

storage periods.

 

plug hole. Crank engine a few

 

 

 

 

times and try to start again.

 

2.

Loose or broken spark plug. (Hissing

2.

Tighten spark plug. If that does not work,

 

 

noise will occur when trying to start.)

 

replace spark plug. If problem persists,

 

 

 

 

may have head gasket problem, see #3.

 

3.

Loose cylinder head or damaged

3.

Tighten head. If that does not remedy

 

 

head gasket. (Hissing noise will

 

problem, replace head gasket.

 

 

occur when trying to start.)

 

 

 

4.

Engine valves or tappets

4.

Have qualified technician diagnose/

 

 

mis‑adjusted or stuck.

 

repair ignition system.

Follow all safety precautions whenever diagnosing or servicing the equipment or engine.

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For technical questions, please call 1-800-520-0882.

Horizontal Engines

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Contents Email our technical support at predator@harborfreight.com Save this ManualTable of Contents Symbol Definitions RPMCarbon Monoxide Hazard Using an engine indoors can Kill Set up PrecautionsOperating Precautions YOU in MinutesService Precautions RefuelingDo not Overfill Battery Setup Instructions To Prevent Serious InjuryEngine on a Vehicle Starter Handle Muffler Dipstick Engine SwitchEngine Controls Serial Number LocationPre-Start Checks Checking and Filling Engine OilStarting the Engine Checking and Filling FuelInjury from Fire Turn the Engine Switch on Manual StartStopping the Engine Break-in PeriodTurn the Engine Switch to Start StartOFF Cleaning, Maintenance, and Lubrication Schedule To Prevent Serious Injury from Accidental StartingTo Prevent Serious Injury from Equipment Failure Engine Oil Change Spark Plug Maintenance Cap Air Filter Element MaintenanceCleaning BrandStorage Troubleshooting Do not use gasoline with more than10% ethanol E15, E20, E85, etc Use Engine will not start Compression Related section Limited 90 Day Warranty Emission Control System WarrantyManufacturer’s Warranty Coverage Please Read the Following Carefully 68120 212cc Parts List Record Product’s Serial Number HereCall 68120 212cc AssemblyDiagram 088268121 212cc Parts List 68121 212cc Assembly Diagram 68136 346cc Parts List Assembly Diagram 68136 346cc68306 420cc Parts List Assembly 68306 420ccItem 68136 346cc and Item 68306 420cc Mounting Hole DiagramsItem 68120 / 68121 212cc For technical questions, please call Horizontal EnginesPower Take-Off Diagrams 16-24UNFMission Oaks Blvd. PO Box 6009 Camarillo, CA 93011 800

68306, 68120 specifications

Harbor Freight Tools is known for offering a wide range of tools and equipment at competitive prices, making it a favored choice for DIY enthusiasts and professionals alike. Among their extensive catalog, the 68120 and 68306 models stand out for their performance and versatility.

The Harbor Freight Tools 68120 is a 1,000-pound capacity engine hoist designed for lifting heavy engines and machinery with ease. One of its main features is its compact design, which allows for great maneuverability in tight spaces. The hoist operates on a hydraulic system, providing smooth lifting capabilities that ensure safety and reliability. The adjustable boom extends from 45 to 70 inches, enabling users to reach a variety of engine positions without hassle.

Additionally, the 68120 boasts a sturdy steel construction that adds to its durability and longevity. It also includes oversized wheels, making it effortless to move around the garage or shop without damaging floors. A safety latch is integrated into the main boom, which secures loads during operation, providing peace of mind to the user. The hoist is designed with efficiency in mind, enabling users to complete tasks more quickly and effectively.

The 68306 model is a pneumatic tire changer, specifically designed for hassle-free tire changing on various vehicles. This tool features an impressive range of compatibility, accommodating tires from 10 to 21 inches in diameter. The robust construction includes heavy-duty steel components, ensuring that it can withstand the rigorous demands of repeated use in a busy workshop or in mobile situations.

One of the standout features of the 68306 is its pneumatic operation, which allows for quick and effortless tire mounting and demounting. The user-friendly design includes an adjustable arm for varying tire widths, ensuring versatility for different vehicle types. Moreover, the incorporated bead breaker makes it easy to separate tires from their wheels without exerting excessive force.

In summary, both the Harbor Freight Tools 68120 and 68306 provide exceptional value for users seeking reliable, efficient, and robust tools to enhance their automotive repairs. With their advanced features and durable designs, they exemplify the high-quality offerings available from Harbor Freight, catering to both casual and professional users. Whether you need to lift heavy engines or change tires quickly, these tools stand ready to deliver performance and convenience.
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