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Honda EM6500SX Generator Set

The Honda EM6500SX is a generator set powered by a Honda GX 390 engine. It is available at 120/240 V and 120 V, single-phase and rated 3.5 A. It holds about 1.16 L (0.3 gal) of oil and 40.6 L (10.7 gal) of coolant. An integrated tank holds 10.2 L (2.7 gal), roughly 4.5 hours of runtime. The same GX 390 engine also powers generator sets from Cummins/Onan, Pramac and SDMO.

0.389 L
Displacement
1.16 L
Oil capacity
2
Document types

How to read your Honda serial & model number →

Service parts for the EM6500SX

Grouped by system, with how many of each the parts manual calls for.

Air intake

1 required
EM4000SX-000001Air filtersee priceAmazon

Fuel system

1 required
EM6500SX-000003Fuel filtersee priceAmazon

Oil system

1 required
EM5000SX-000002Oil filtersee priceAmazon

Cooling system

1 required

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

Standby kVA6
Oil capacity1.16 L
Voltage options120/240 V, 120 V
PhaseSingle
Rated current3.5 A
Circuit breaker30 A
Fuel tank10.2 L
Tank runtime4.5 hr

Engine

Honda GX 390
Oil capacity1.16 L
Coolant capacity40.6 L
Displacement0.389 L
Aspirationunleaded
Rated speed3600 rpm

Same engine, other brands

3 brands

The Honda GX 390 in this set also powers 10 generator sets sold under 3 other brands. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.

BrandModels
SDMOHX 6000, HX 6000 TB UK, HX 6000 UK, HX 6080, HX 7500 T, SH 6000 E UK, SH 6000 UK
Cummins/Onan5 GRBA 378A, 7 GRBB 377A
PramacE8000

Maintenance & consumables

for the Honda GX 390
ItemSpecCapacityPart #Interval
Air filterAir Cleaner ElementEM4000SX-000001 Amazon eBay
Fuel filterFuel FilterEM6500SX-000003 Amazon eBay
Oil filterOil FilterEM5000SX-000002 Amazon eBay
Battery—3650 hr
BeltBeltH24601-A3A-000 Amazon eBay
Coolant1.2 L—4000 hr
Coolant filterCoolant FilterH24600-A3A-000 Amazon eBay
OilChange—200 hr
Spark plugSpark arrester—1200 hr

Service specifications

8
TypeItemValueUnitCondition
OtherCrank duration3-3-4-5secper automatic attempt sequence
OtherEnclosure dimensions85x58x33mm
OtherLength of cable2m
OtherMax. Standby Current9.8mA @ 12 V
OtherNumber of attempts4automatic starting attempts
OtherPause between each automatic attempt10sec
TemperatureOperating Temperature Range-30 to +70°C
VoltageDC supply12VDCgenerator battery

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Procedures

1
Setting up 10 sec start delay adjustment

⚠ 10 sec start delay is used in combination with an ATS panel to prevent multiple short start-stop commands coming from the ATS panel while the mains is unstable during blackout.

  1. Open the controller cover and locate the red dip switch (S-DELAY).
  2. Use your finger to move the dip switch 1 to ON position.
  3. Replace the cover and tighten screws.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Common questions

What engine does the Honda EM6500SX use?

The Honda EM6500SX is powered by the Honda GX 390 engine.

What's the oil capacity on a Honda EM6500SX?

The Honda GX 390 engine in the Honda EM6500SX has an oil capacity of 1.16 liters.

How much coolant does the Honda EM6500SX hold?

The Honda EM6500SX cooling system holds 40.6 liters (10.7 US gallons) for the engine, per the manufacturer specification sheet.

What size fuel tank does the Honda EM6500SX have?

The Honda EM6500SX has a 10.2 liter (3 US gallon) fuel tank, giving about 4.5 hours of runtime.

What voltages is the Honda EM6500SX available in?

The Honda EM6500SX is offered in 120/240 V, 120 V, Single-phase.

Which oil filter part number does the Honda EM6500SX take?

The Honda EM6500SX uses oil filter part number EM5000SX-000002.

Which fuel filter part number does the Honda EM6500SX take?

The Honda EM6500SX uses fuel filter part number EM6500SX-000003.

What air filter fits the Honda EM6500SX?

The Honda EM6500SX uses air filter part number EM4000SX-000001.

Troubleshooting

5

Symptoms & remedies

SymptomRemedy
The engine stops and will not restart.Check the engine oil level (see page 40) before troubleshooting in other areas.
Engine speed becomes abnormal.The engine will automatically stop if the engine speed becomes abnormal.
Abnormal voltage is detected during generation.The engine will automatically stop during generation when it detects abnormal voltage.
Occasionally you may hear a light ‘‘spark knock’’ or ‘‘pinging’’ (metallic rapping noise) while operating under heavy loads.This is no cause for concern. If spark knock or pinging occurs at a steady engine speed, under normal load, change brands of gasoline. If spark knock or pinging persists, see an authorized Honda generator dealer.
Running the engine with persistent spark knock or pinging can cause engine damage.Running the engine with persistent spark knock or pinging is misuse, and the Distributor’s Limited Warranty does not cover parts damaged by misuse.

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Repair guides

1

Step-by-step procedures compiled from the Honda service manual for this model.

Parts

64
Part #DescriptionQtySystem
0098-6074-02Label, Warning1Label Amazon eBay
0200-3065ALTERNATOR ASSEMBLY1Alternator Amazon eBay
0200-3066ALTERNATOR ASSEMBLY1Alternator Amazon eBay
0327-1230DIODE 1N5627Diode Amazon eBay
0327-1231VARISTOR S20K 420Varistor Amazon eBay
0327-1232VARISTOR S20K S10 USE11100469Varistor Amazon eBay
11500571HOLDER DIODEHolder diode Amazon eBay
1200046SHAFT ALT F86/F89 SKVAShaft Amazon eBay
1200084SHAFT ALT F86/F89 SKVAShaft Amazon eBay
2081515LAM ROTOR P/NLam rotor Amazon eBay $168.52
31ZH9600Spark arrester screen1Spark plug Amazon eBay
3400042INSUL PYLM 200MM 3-5-3Insulation plym Amazon eBay
34211817INSUL INSERT ROTOR END CAPPINInsert rotor end cappin Amazon eBay
34212184INSUL INSERT SMMInsulation insert smm Amazon eBay
34212185INSUL INSERT 25MMInsulation insert 25mm Amazon eBay
34300020TAPE INSUL 25MM PE5I0Tape insulation Amazon eBay
34300021TAPE VIDA SHRINK 168.125MMTape shrink Amazon eBay
34300213TAPE FOAM DBL SCOTCH 4008Tape foam double scotch Amazon eBay
34700331VARN ISONEL 1400Varnish Amazon eBay
36401078SCRW S/TAP 8G6X1/2 CSK CR STLZScrew Amazon eBay
40000012WIRE ENAML 0.85MM PEI 2Wire enamal Amazon eBay
95/27.5Rated Amps1Rated current a buy
AECM103FBSAutomatic Engine Control Module (controller)1ECM / ECU Amazon eBay
EM4000SX-000001Air Cleaner Element1Air filter Amazon eBay
EM5000SX-000002Oil Filter1Oil filter Amazon eBay
EM6500SX-000003Fuel Filter1Fuel filter Amazon eBay
F13042-700Handle Installation1Handle installation Amazon eBay
H10300-700Hanger Kit1Hanger kit Amazon eBay
H24596-A3A-000Air Cleaner Element1Air filter Amazon eBay
H24597-A3A-000Spark Plug1Spark plug Amazon eBay
H24598-A3A-000Oil Filter1Oil filter Amazon eBay
H24599-A3A-000Fuel Filter1Fuel filter Amazon eBay
H24600-A3A-000Coolant Filter1Coolant filter Amazon eBay
H24601-A3A-000Belt1Belt Amazon eBay
H24602-A3A-000Battery1Battery Amazon eBay
R03BBattery Group Size: R03B1Battery Amazon eBay
R10100-700Remote Control Box1Remote control box Amazon eBay
R10101-700Remote Control Kit1Remote control kit Amazon eBay
W16EPR-USpark Plug1Spark plug Amazon eBay $20.00 NAPA $2.53
0327-1225COVER-ALT1Service part / kit Amazon eBay
0327-1228FAN-PLASTIC1Service part / kit Amazon eBay
0327-1229BEARING-BALL1Service part / kit Amazon eBay
0327-1234RETAINER-BEARING1Service part / kit Amazon eBay
0327-1242END BELL-DRIVE END1Service part / kit Amazon eBay
0327-1246ROTOR ASSEMBLY1Service part / kit Amazon eBay
0327-1247END BELL-NON DRIVE END1Service part / kit Amazon eBay
11000084DIODE2Service part / kit Amazon eBay
11100469RESISTOR-VARIABLE2Service part / kit Amazon eBay
11101096RESISTOR-VARIABLE2Service part / kit Amazon eBay
11700883CAPACITOR1Service part / kit Amazon eBay
13300027FAN-PLASTIC1Service part / kit Amazon eBay
17130058STUD-STATOR (7KW)1Service part / kit Amazon eBay
23460512LBL °Service part / kit Amazon eBay
25100372HEAT SHIELD-MUFFLER1Service part / kit Amazon eBay
28000190STATOR-WOUND1Service part / kit Amazon eBay
30009010Pilot screw1Service part / kit Amazon eBay
36021457BOLT-HEX 5/165Service part / kit Amazon eBay
36200053WASHER-LOCK 5/165Service part / kit Amazon eBay
36200121WASHER-FLAT 5/161Service part / kit Amazon eBay
41000034BEARING-BALL1Service part / kit Amazon eBay
41300064RETAINER-BEARING1Service part / kit Amazon eBay
47000136ROTORService part / kit Amazon eBay
47000190ROTOR1Service part / kit Amazon eBay
965-0532Generator SetService part / kit Amazon eBay

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Available documents

Reference — 2023-honda-powerequipment-accessory-catalogue (Honda)Reference — Honda-Generators-Accessory-Catalog (Honda)Reference — generator brochure (Honda)Owner's manual — 00X31Z236000 (Honda)Owner's manual — 00X31Z236200 (Honda)Owner's manual — 00X31Z236220 (Honda)Owner's manual — 00X31Z236230 (Honda)Owner's manual — 31z21600 (Honda)Service manual — 00X31Z216040 (Honda)Service manual — 00X31Z236120 (Honda)Service manual — 00X31Z236130 (Honda)Service manual — 00x31z216050 (Honda)Service manual — HONDA-controller l4bzmumf (Honda)

This page was generated from the 13 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.

Other sets with this engine