troubleshooting (ENGINE)

Table 6. Engine Troubleshooting

Symptom

Possible Cause

Solution

 

 

 

 

Spark plug bridging?

Check gap, insulation or replace spark plug.

Difficult to start. Fuel is

Carbon deposit on spark plug?

Clean or replace spark plug.

available but no SPARK

Short circuit due to deficient spark plug

Check spark plug insulation. Replace if

at spark plug.

insulation?

worn.

 

 

 

 

Improper spark plug gap?

Set to proper gap.

 

ON/OFF switch is shorted?

Check switch wiring. Replace switch.

 

 

 

Difficult to start. Fuel is

Ignition coil defective?

Replace ignition coil.

available and SPARK

Improper spark gap, points dirty?

Set correct spark gap and clean points.

is present at the spark

 

 

Condenser insulation worn or short

Replace condenser.

plug.

circuiting?

 

 

 

 

 

 

Spark plug wire broken or short circuiting?

Replace defective spark plug wiring.

Difficult to start. Fuel

Wrong fuel type?

Flush fuel system and replace with correct

is available, SPARK is

type of fuel.

 

present at the spark

 

 

Water or dust in fuel system?

Flush fuel system.

plug and compression

 

 

Air cleaner dirty?

Clean or replace air cleaner.

is normal.

 

 

 

 

Suction/exhaust valve stuck or protruded?

Reseat valves.

Difficult to start. Fuel

 

 

Piston ring and/or cylinder worn?

Replace piston rings or piston.

is available, SPARK is

 

 

Cylinder head and/or spark plug not

 

present at the spark

Torque cylinder head bolts and spark plug.

tightened properly?

plug and compression

 

 

 

is low.

Head gasket and/or spark plug gasket

Replace head and spark plug gaskets.

 

damaged?

 

 

 

Fuel not available in fuel tank?

Fill with correct type of fuel.

 

 

 

 

Fuel cock does not open properly?

Apply lubricant to loosen fuel cock lever.

No fuel present at

Replace if necessary.

 

carburetor.

Fuel filter clogged?

Replace fuel filter.

 

 

 

 

Fuel tank cap breather hole clogged?

Clean or replace fuel tank cap.

 

 

 

 

Air in fuel line?

Bleed fuel line

Weak in power.

Air cleaner dirty?

Clean or replace air cleaner.

 

 

Compression is proper

Improper level in carburetor?

Check float adjustment. Rebuild carburetor.

and does not misfire.

 

 

Defective spark plug?

Clean or replace spark plug.

 

 

 

 

page 28 — GAC6HZR 60 hz gENERATOR• operation and parts manual — rev. #1 (03/31/10)

Page 28
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Multiquip GAC-6HZR manual Troubleshooting Engine, Engine Troubleshooting

GAC-6HZR specifications

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