Harbor Freight Tools 69774 Engine Troubleshooting, Problem Possible Causes Probable Solutions

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SAFETY

SETUP

OPERATION

MAINTENANCE

Engine 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

2.

Move Choke to CHOKE position.

 

position, cold engine.

 

 

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. Fuel

7.

Gently tap side of carburetor float

 

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. Remove spark

 

caused by the carburetor needle sticking.

 

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.

Incorrect spark timing or

5.

Have qualified technician diagnose/

 

faulty ignition system.

 

repair ignition system.

 

 

COMPRESSION RELATED:

COMPRESSION RELATED:

1.

Cylinder not lubricated.

1.

Pour tablespoon of oil into spark

 

Problem after long 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.

ITEM 69774

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Contents Page Table of Contents Symbol Definitions Symbol Property or StatementSafety Warnings Set up PrecautionsEngine Precautions Operating Precautions Carbon Monoxide Hazard Using an engine indoors can KillService Precautions RefuelingSet Up ControlsTo Prevent Serious Injury Connecting Hoses Safety See diagram below Locating the Water PumpOperation Concerns Checking and Filling Engine Oil OperationPrime the Pump Checking and Filling FuelStarting the Engine Stopping the Engine Break-in PeriodTo Prevent Serious Injury from Accidental Starting Cleaning, Maintenance, and Lubrication ScheduleMaintenance and Service To Prevent Serious Injury from Equipment FailureEngine Oil Change Spark Plug Maintenance Cap Air Filter Element MaintenanceCleaning Recommended Spark PlugStorage Pump Troubleshooting Problem Possible Causes Likely SolutionsDo not use gasoline with more than Engine TroubleshootingProblem Possible Causes Probable Solutions 10% ethanol E15, E20, E85, etcUse Engine will not start Compression Related sectionUnited States Emission Control Defects Warranty Statement Limited 90 Day WarrantyEmission Control System Warranty Manufacturer’s Warranty CoveragePlease Read the Following Carefully Parts List Parts Lists and DiagramsPart Description Qty Assembly Diagram Mission Oaks Blvd. PO Box 6009 Camarillo, CA 93011 800

69774 specifications

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