Desa Servicing the Engine, Technical Service, Troubleshooting, Engines Gasoline, Honda

Page 15

OWNER’S MANUAL

SERVICING THE ENGINE

Honda parts and services should be handled by your nearest authorized engine service firm. Check the yellow pages of your tele- phone directory under the listing:

Engines Gasoline, Honda

or visit:

www.honda-engines.com

or call Honda direct:

1-800-426-7701

TECHNICAL

SERVICE

You may have further questions about as- sembling, operating, or maintaining this product. If so, you can visit our Technical Service web site at www.desatech.com or contact our Technical Service Department at 1-800-858-8501 (English Only).You may also write to:

DESA Specialty Products™

ATTN: Technical Service Specialty Products P.O. Box 90004

Bowling Green, KY 42102-9004

When contacting DESA Specialty Prod- ucts™, have ready

Your Name

Your Address

Your Phone Number

Model Number of Product

Serial Number

Date of Purchase (Include copy of receipt for written requests).

TROUBLESHOOTING

Note: For additional help, visit DESA International’s technical service web site at www.desatech.com.

WARNING: Only a qualified electrical service person should service and repair generator. Use only factory approved replacement parts.

Note: See engine owner’s manual for engine troubleshooting.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

 

No voltage when starting generator with no

1.

Defective capacitor

1.

Replace capacitor

electrical load

2.

Winding short circuit or loose

2.

Check resistance of coils (see Electrical

 

 

connections

 

Component Specifications, page 16)

 

3.

Defective rotor diode

3.

Replace both diodes on rotor

 

4.

Loss of residual magnetism

4.

Apply 12-volt battery to capacitor ter-

 

 

 

 

minals for 2-3 seconds

 

 

 

 

 

Voltage is less than normal voltage with no

1.

Engine speed too low

1.

Set engine speed to 3720 RPM (62 Hz)

electrical load

 

 

 

with no load

 

2.

Defective rotor diode

2.

Replace both diodes on rotor

 

3.

Partial short circuit in winding

3.

Check resistance of coils (see Electrical

 

 

 

 

Component Specifications, page 16)

 

4.

Defective capacitor

4.

Replace capacitor

 

 

 

 

 

Voltmeter reading more than 10% high with

1.

Engine speed too high

1.

Set engine speed to 3720 RPM (62 Hz)

no electrical load

 

 

 

with no load

 

 

 

 

 

Voltmeter reading correct with no electrical

1.

Defective rotor diode

1.

Replace both diodes on rotor

load, but more than 10% low when electrical

2.

Electrical load too high

2.

Do not overload generator

load is added

3.

Engine not running properly

3.

Contact an authorized engine service

 

 

 

 

center

www.desatech.com

118683

15

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Contents Portable Gasoline Generators Portable Gasoline Generators Safety InformationGenerator Product IdentificationVentilation High and LOW Temperature OperationGeneral Information UnpackingMGH4000DI MGH5000EIE MGH6500AIE SpecificationsElectric Start Generator FeaturesFull Power Selector Switch OIL Alert SystemReceptacle Circuit Breaker Engine OILFuel Engine Circuit BreakerBattery Installing Battery Cables to EngineMounting Battery to Generator Generator Grounding Standby Installation to Home or BuildingRecommended Minimum Wire Gauges AWG for Extension Cords Extension CordsDetermining Electrical Load for Generator Typical Electric Appliance Wattages ChartGeneral Information Using ReceptaclePower Cord and Plug Requirements OperationPrestart StartingAUTO-IDLE Operation Disconnecting Electric Loads Adjusting the Idle SpeedHigh Altitude Operation Adding Electrical Loads Maintenance and Repairs StorageStopping Engine Engines Gasoline, Honda Technical ServiceTroubleshooting Servicing the EngineModel Electrical Component SpecificationsMain Black T4 Windings Red Yellow Green Wiring DiagramsWiring Diagram, Models MGH4000DI, MGH5000EI, and MGH5000EIE KEY Part Number Description QTY Illustrated Parts ListPart Number for Model For Model MGH3000GA Alternator Assembly For Models HWI3000A MGH3000A Roll Cage 118916-02 Roll Cage 1618 Lock Nut, 5/16-18 For Solenoid and Control Board Assemblies and Mounting KEY Part Number Description QTY 120ONLY NON-WARRANTY Service Replacement Parts and AccessoriesRepair Service Warranty ServicePortable Gasoline Generators 118683 Warranty Information