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Honda GX340 K1 Engine

The Honda GX340 K1 is a 0.62 L 1-cylinder air-cooled engine rated at 3600 rpm. It powers generator sets from Honda and MQ Power, including the EB5000 and GA-6H. It holds 1.1 L (0.3 gal) of oil.

Also known as: Honda GX340 K1

Part of the Honda GX340 engine family — 2 variants share parts & fitment.

0.625 L

Displacement

Cylinders

3600 rpm

Rated speed

1.1 L

Oil capacity

On this pageSpecs Generator sets Maintenance FAQ Service intervals Torque & specs Fluids Procedures Wiring

Engine specifications

Oil capacity	1.1 L
Displacement	0.625 L
Cylinders	1
Aspiration	air-cooled
Rated speed	3600 rpm

Generator sets powered by this engine

Shared across brands: Honda, MQ Power

Honda EB5000MQ Power GA-6H

This engine also powers 43 machine(s) on Power Equipment Info.

How to read your Honda engine serial & model number →

Common problems

Rectifier failure
Fix: Replace the rectifier
Recoil starter malfunction
Fix: Inspect and repair or replace the recoil starter
High fuel consumption, loss of power and excessive carbon buildup in the combustion chamber
Cause: A clogged air cleaner
Fix: Cleaning the air cleaner
Generator does not start
Cause: Faulty spark plug
Fix: Replace the spark plug
Fuel cock assembly problem
Fix: Inspect and repair or replace the fuel cock assembly
Engine oil level switch issue
Fix: Check and replace the oil level switch if necessary
Engine breakdowns
Fix: Follow the diagnosis based on the Engine Troubleshooting information shown below and on the proceeding page. If the problem cannot be remedied, please leave the unit just as it is and consult our company's business office or service plant.
Circuit breaker issue
Fix: Check and replace the circuit breaker if necessary
Air filter element problem
Fix: Clean or replace the air filter element
When the engine will not start
Fix: 1. Refill the fuel tank. 2. Is there enough oil in - Add the recommended oil. (The oil alert lamp flashes when cranking the engine.) 3. Is there a spark from the spark plug? To check: 1) Remove the spark plug cap and clean any dirt from around the spark plug. 2) Remove the spark plug and install the spark plug in the plug cap. 3) Set the plug side electrode on the cylinder head. Crank the engine, sparks should jump across the gap. 4. Clean the fuel sediment cup. 5. If the engine still does not start, take the generator to an authorized Honda generator dealer.
No electricity at the AC receptacles
Fix: 1. Turn the AC circuit breaker ON. 2. Check the electrical appliance or equipment for any defects.

Compiled from service & troubleshooting documentation across every generator set that uses the Honda GX340 K1.

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Air filter	Service air cleaner.		—	50 hr
Fuel filter			—	200 hr
Oil filter	Replace oil filter.		—	50 hr
Battery			—	200 hr
Belt	Inspect belts for wear, replace as needed.		—	50 hr
Coolant			—	200 hr
Oil	4-stroke motor oil that meets or exceeds the requirements for API service classification SJ.	1.5 L	—	200 hr
Spark plug	Replace spark plugs every 50 hours or as needed.		—	50 hr

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Service intervals

Item	Action	Hours	Months	Notes
Engine oil	Change	300 hr	12 mo	First service — First month or 20 hrs
Air cleaner	Clean	100 hr	6 mo	Service more frequently when used in dusty areas (1)
Sediment cup	Clean	100 hr	6 mo	Page 58
Spark arrester	Clean	300 hr	12 mo	Must be serviced every 100 hours to maintain its efficiency
Spark plug	Adjust	300 hr	12 mo	Readjust — every 6 months or 100 Hrs
Fuel tank and filter	Clean	300 hr	12 mo	(2)
Fuel tank and strainer	Clean	300 hr	12 mo	(2) Every year or 300 Hrs
Spark plug	Replace	300 hr	12 mo	Every year or 300 Hrs (page 69)
Valve clearance	Adjust	300 hr	12 mo	Check-adjust every year or 300 Hrs; by servicing dealer (2)
Combustion chamber	Clean	1000 hr		After every 1,000 hrs
Canister	Check		24 mo	Every 2 years (2)
Charge tube	Check		24 mo	Every 2 years (2)
Fuel line	Replace		24 mo	Every 2 years (Replace if necessary)
Fuel tube	Check		24 mo	Every 2 years (replace if necessary) (2)
GFCI receptacle	Test		1 mo	Once each month; test before each use if generator is stored outside unprotected
Purge tube	Check		24 mo	Every 2 years (2)

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

Service specifications

Type	Item	Value	Unit	Condition
Clearance	Float height	13.2	mm
Gap	Ignition coil air gap	0.2 – 0.6	mm
Gap	Spark plug electrode gap	0.028–0.031 in (0.7–0.8 mm)	mm
Gap	Spark plug gap	0.028 - 0.031	in
Gap	Spark plug gap	0.028-0.031	in
Gap	Spark plug gap	0.028–0.031	in (0.7–0.8 mm)
Gap	Spark plug gap	0.7 - 0.8	mm
Gap	Spark plug gap	0.70 – 0.80	mm
Gap	Spark plug gap	0.70-0.80	mm
Other	Compression ratio	8.2:1
Other	Spark plug installation (new plug)	1/2	turn after seating to compress washer	new spark plug
Other	Spark plug installation (reused plug)	1/8 - 1/4	turn after seating to compress washer	reinstalling a used spark plug
Pressure	Cylinder compression	1.29	MPa	at 1,400 min-1 (rpm)
Pressure	Cylinder compression	1.31	MPa	at 1,400 min-1 (rpm)
Resistance	CT sensor resistance	18 ±2	Ω
Resistance	Spark plug cap resistance	7.5 – 12.5	kΩ
Speed	Auto Throttle idle speed	2,300 ± 100	min-1 (rpm)
Speed	Engine speed	3,600	rpm
Speed	Engine speed protection limit (DAVR self-diagnosis)	4140	rpm	abnormal voltage/speed sustained longer than 3 seconds
Speed	Maximum engine speed	3,600 ± 100	min-1 (rpm)
Torque	Air cleaner case bolt	5.4	N·m
Torque	Carburetor mount nut	8.5	N·m
Torque	Connecting rod special bolt	14	N·m
Torque	Control panel mount bolt	27	N·m
Torque	Crankcase cover bolt	24	N·m
Torque	Cylinder head bolt	35	N·m
Torque	Engine mount nut	34	N·m
Torque	Exhaust pipe nut	24	N·m
Torque	Fan cover stud bolt	23	N·m
Torque	Fan cover stud bolt mounting nut	40	N·m
Torque	Flywheel special nut	128	N·m
Torque	Flywheel special nut	170	N·m
Torque	Front housing bolt	24	N·m
Torque	Fuel meter screw	4	N·m
Torque	Fuel valve nut	23	N·m
Torque	Generator cooling fan screw	4.8	N·m
Torque	Handle installation	17–22 lbf·ft (24–29 N·m, 2.4–3.0 kgf·m)	N·m
Torque	Handle installation flange bolts	19.5 lbf·ft (26.5 N·m, 2.7 kgf·m)	lbf·ft
Torque	Hanger kit flange bolts	19.5 lbf·ft (26.5 N·m, 2.7 kgf·m)	lbf·ft
Torque	Hanger kit installation	17–22 lbf·ft (24–29 N·m, 2.4–3.0 kgf·m)	N·m
Torque	Oil drain bolt	22.5	N·m
Torque	Oil drain plug (12×15 mm)	16.3 lbf·ft (22.1 N·m, 2.25 kgf·m)	lbf·ft
Torque	Oil drain plug (12×15 mm)	16.6 lbf·ft (22.5 N·m, 2.25 kgf·m)	N·m
Torque	Rear housing cover bolt	9.8	N·m
Torque	Rocker arm pivot adjusting nut	10	N·m
Torque	Rocker arm pivot special bolt	24	N·m
Torque	Rotor bolt	44	N·m
Torque	Rubber mount nut	24	N·m
Torque	Spark plug	13.0 lbf·ft (17.7 N·m, 1.8 kgf·m)	lbf·ft
Torque	Spark plug	13.3 lbf·ft (18 N·m, 1.8 kgf·m)	N·m
Torque	Spark plug	18	N·m
Torque	Spark plug tightening (new plug)	1/2 turn after the spark plug seats	turn	new spark plug
Torque	Spark plug tightening (used plug)	1/8 - 1/4 turn after the spark plug seats	turn	reinstalling a used spark plug
Torque	Wheel kit flange bolts	19.5 lbf·ft (26.5 N·m, 2.7 kgf·m)	lbf·ft
Torque	Wheel kit installation	17–22 lbf·ft (24–29 N·m, 2.4–3.0 kgf·m)	N·m
Valve clearance	Valve clearance EX	0.20 ± 0.02	mm
Valve clearance	Valve clearance EX	0.20±0.02	mm	cold
Valve clearance	Valve clearance EX	0.20±0.02 mm	mm	cold
Valve clearance	Valve clearance IN	0.15 ± 0.02	mm
Valve clearance	Valve clearance IN	0.15±0.02	mm	cold

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

Recommended fluids

Fluid	Grade	Standard	Capacity	Notes
Engine oil	SAE 10W-30	API service category SJ or later (or equivalent)	1.1 L	Maximum oil capacity 1.2 US qt (1.1 L); 4-stroke automotive detergent oil; other viscosities per ambient temperature chart
Engine oil	SAE 10W-30 (other viscosities per ambient temperature chart)	API service classification SJ or higher	1.1 L	Non detergent and 2-stroke oils are not recommended
Fuel	Regular unleaded gasoline	pump octane rating 86 or higher
Fuel	Regular unleaded gasoline, pump octane rating 86 or higher	No more than 10% ethanol (E10) or 5% methanol by volume	23.5 L	Fuel tank capacity 6.21 US gal (23.5 L)
Fuel	Unleaded gasoline, pump octane number (R+M)/2 of 86 or higher, or research octane number of 91 or higher		17.0 lit	Fuel tank capacity 17.0 lit (4.5 US gal); do not fill above UPPER LEVEL line; max 10% ethanol; never use methanol above 5%; never use stale or contaminated gasoline or an oil/gasoline mixture
Fuel	Unleaded gasoline, pump octane rating 86 or higher		17.0 L	Fuel tank capacity 17.0 L (4.50 US gal, 3.74 Imp gal); up to 10% ethanol, 5% methanol, or 15% MTBE
Fuel	unleaded gasoline, pump octane rating 86 or higher		17.0 L	Do not fill above the shoulder of the fuel strainer; oxygenated fuels allowed up to 10% ethanol, 15% MTBE, 5% methanol by volume
Grease	Marine grease	water resistant urea based grease
Grease	Multi-purpose grease	NLGI #2 or equivalent		Lithium based multi-purpose grease
Other	Automatic transmission fluid	ATF

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

Procedures

GFCI Operation Check (System ①) diagnostic

⚠ A faulty GFCI system will not provide proper protection against electric shock.

⚠ If the GFCI system fails the test, the generator must be repaired by an authorized Honda servicing dealer before use.

Unplug all tools and appliances from the generator.
Start the engine.
Turn OFF the Auto Throttle switch.
Turn the AC circuit breaker to the ON position.
Press the TEST button: the RESET button should pop out and the AC circuit breaker should switch to OFF.
Press the RESET button: it should stay in, flush with its base plate.
With the RESET button in and the engine running, turn the AC circuit breaker to ON; it should remain ON.

GFCI Operation Check (System ②) diagnostic

⚠ If the red indicator starts to blink continuously, contact an authorized Honda generator dealer.

Unplug all tools and appliances from the generator.
Start the engine.
Turn OFF the Auto Throttle switch.
Turn the AC circuit breaker to the ON position; the green indicator should light continuously.
Press the TEST button: the RESET button will pop out and the green indicator will go off.
Press the RESET button: the green indicator will light continuously.

2 Wheel Kit Installation installation

Install the two wheels on the axle shaft.
Install the axle assembly on the generator using four bolts and nuts.
Install the two stands using four bolts and nuts.
Install right and left handles on the generator upper frame using brackets and six bolts.

2-Wheel Kit Installation installation

Install the two wheels on the axle shaft.
Install the axle assembly on the generator using four bolts and nuts.
Install the two stands using four bolts and nuts.
Install right and left handles on the generator upper frame using brackets and six bolts.

4 Wheel Kit Installation installation

⚠ Install the shaft with the wheel stopper facing the engine side.

Install the four wheels on the axle shaft.
Install the axle assembly on the generator using four bolts and nuts.

4-Wheel Kit Installation installation

⚠ Install the shaft with wheel stopper facing engine side.

Install the four wheels on the axle shaft.
Install the axle assembly on the generator using four bolts and nuts.

4-Wheel Kit Installation (optional parts) installation

⚠ Install the shaft with wheel stopper facing engine side.

Install the four wheels on the axle shaft.
Install the axle assembly on the generator using four bolts and nuts.

Handle Installation installation

⚠ Do not add fuel or oil before tipping the generator.

Tools: 12 mm wrench (2), pliers

Install the handle holder assembly on the generator upper frame using the 8×18 mm flange bolts.
Install the handle assembly on the upper frame pipe using 8×16 mm flange bolts, handle bush A, handle bush B, and handle lower bracket.
Torque to 19.5 lbf·ft (26.5 N·m, 2.7 kgf·m).
Check that the handle folds smoothly and does not hang down by its own weight.

Hanger Kit Installation installation

Tools: 12 mm wrench (2)

Position the hanger at the generator's balance point.
Fit the end tabs of the hanger through the bracket slots.
Bolt the brackets to the hanger and tighten securely.
Torque to 19.5 lbf·ft (26.5 N·m, 2.7 kgf·m).

Wheel Kit Installation installation

Tools: 12 mm wrench (2), pliers

Install the two stands on the under frame using four 8×16 mm flange bolts.
Install the two wheels on the axle shaft using the washers and split pins; bend the pins.
Install the axle assembly using four 8×16 mm flange bolts and 8 mm flange nuts.
Torque to 19.5 lbf·ft (26.5 N·m, 2.7 kgf·m).

Air Cleaner Check/Cleaning maintenance

⚠ Excess oil will restrict air flow and may cause engine to smoke at startup.

⚠ Operating without element or loose element allows dirt to enter engine.

Remove air cleaner case lid springs and unhook tabs.
Remove air cleaner cover and element.
Check element and replace if damaged.
Clean element in warm soapy water or non-flammable solvent, dry thoroughly.
Dip filter in clean engine oil, squeeze out excess oil.
Install air cleaner in reverse order of removal.

Air Cleaner Element Cleaning maintenance

⚠ Do not twist the foam filter when squeezing.

⚠ Prevent dirt from entering the air duct that leads to the carburetor.

Clean the foam air filter in warm soapy water, rinse, and allow to dry thoroughly, or clean in non-flammable solvent and dry.
Dip the foam air filter in clean engine oil, then squeeze out all excess oil.
Wipe dirt from the air cleaner housing and cover using a moist rag.

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

Voltage reconnection

Voltage	Phase	Connection	Leads	Notes
120 V		Voltage selector switch in "120V ONLY" position		Only the 120V receptacles can be used; do not use the 120/240V receptacle in this position; rated power available at the 30A 120V twist lock receptacle
120/240 V		Voltage selector switch in "120/240V" position		The 120V and 120/240V receptacles can be used simultaneously; required if a 240V appliance is connected to the 4-prong receptacle

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

Parts cataloged across the Honda GX340 family

198

Part #	Description	Category
0601800258	AC VOLTMETER	Ac voltmeter
17210-ZE3-505	Air filter	Air filter
17211899000	ELEMENT AIR CLEANER	Air filter
573-012	Air Cleaner Assembly	Air filter
70-71	Alternator Assembly	Alternator
0602313060	ARRESTER, SPARK	Arrester spark
HONDA18355ZB4630	ARRESTER, SPARK	Arrester spark
74-75	Battery Terminal Assembly	Battery terminal
957251008000	BOLT, FLANGE, 10X80	Bolt flange 10x80
957010600800	BOLT, FLANGE, 6X8	Bolt flange 6x8
0040120000	BOLT, FLANGE, 8X98	Bolt flange 8x98
90014ZE2000	BOLT, HEAD COVER	Bolt head cover
0040170000	BOLT, STUD, 8X47	Bolt stud 8x47
90047ZE2000	BOLT, STUD, 8X47	Bolt stud 8x47
90042ZE3700	BOLT, STUD, 8X98	Bolt stud 8x98
7905461004	BRACKET	Bracket
7905469004	BRACKET	Bracket
4341817004	BRACKET, CIRCUIT BREAKER	Bracket circuit breaker
0601805327	CIRCUIT BREAKER	Breaker
0601851760	CAP	Cap
0810106004	CAP, FUEL TANK	Cap fuel tank
16100ZEZF00	CARBURETOR ASSY.	Carburetor
28410ZE3W01ZB	CASE COMP., RECOIL STARTER	Case comp recoil starter
0601804819	CIRCUIT BREAKER	Circuit breaker
12216ZE2300	CLIP, VALVE GUIDE	Clip valve guide
0805088304	COLLAR	Collar
7901810203	CONTROL BOX	Control box
7911811403	CONTROL BOX	Control box
7901820103	CONTROL PANEL	Control panel
7911821413	CONTROL PANEL	Control panel
7915455003	COVER	Cover
7915455103	COVER	Cover
12310ZE2010	COVER COMP., HEAD	Cover comp head
0820610304	DECAL : CAUTION	Decal caution
S-1123	DECAL : GROUND	Decal ground
7900681202	DECAL : MQ 6000	Decal mq 6000
S-4499	DECAL : MQ 6000	Decal mq 6000
7900501222	DECAL : MQ GA-6HZR	Decal mq ga 6hzr
0605511087	FUEL COCK	Fuel cock
16950ZB4015	FUEL COCK ASSY.	Fuel cock
0810107103	FUEL FILTER	Fuel filter
17672-ZE2-W01	Fuel strainer	Fuel filter
A9924800004	FILTER FUEL	Fuel filter
78-79	Fuel Pump Assembly	Fuel pump
76-77	Fuel Tank Assembly	Fuel tank
0601830737	FULL POWER SWITCH	Full power switch
0602320175	GASKET	Gasket
11381-ZE3-801	Gasket, sump cover	Gasket
12251-ZE3-000	Gasket, cylinder head	Gasket
12391-ZE2-020	Gasket, rocker cover	Gasket
16220-ZA0-702	Gasket, air cleaner housing	Gasket
16221-ZF6-800	Gasket, carb	Gasket
16223-ZE3-W00	Gasket, carb insulator	Gasket
18333-ZE3-800	Gasket, muffler pipe	Gasket
18333ZE3800	GASKET, EX. PIPE	Gasket
18381-ZE2-W10	Gasket, muffler	Gasket
HONDA18333ZB4800	GASKET	Gasket
12251ZE3W00	GASKET, CYLINDER HEAD	Gasket cylinder head
28469ZE2W01	GRID REINFORCEMENT	Grid reinforcement
28461ZE2W01	GRIP, STARTER	Grip starter
0601850102	GROMMET	Grommet
7901850004	GROMMET	Grommet
0601815109	GROUND TERMINAL	Ground terminal
12205ZE2315	GUIDE, EX. VALVE (OVER SIZE)	Guide ex valve over size
12204ZE2325	GUIDE, IN. VALVE (OVER SIZE)	Guide in valve over size
122AOZF6W00	HEAD COMP., CYLNDER	Head comp cylinder
0010108020	HEX. HEAD BOLT	Hex head bolt
0017105010	HEX. HEAD BOLT	Hex head bolt
0017106012	HEX. HEAD BOLT	Hex head bolt
0017106016	HEX HEAD BOLT	Hex head bolt
0017106020	HEX. HEAD BOLT	Hex head bolt
0017108020	HEX. HEAD BOLT	Hex head bolt
0017108025	HEX. HEAD BOLT	Hex head bolt
0017108030	HEX. HEAD BOLT	Hex head bolt
0017108040	HEX. HEAD BOLT	Hex head bolt
0602322061	HEX. HEAD BOLT	Hex head bolt
OB-13	HEX. HEAD BOLT	Hex head bolt
0207004000	HEX. NUT	Hex nut
0207008000	HEX. NUT	Hex nut
28445ZE2W01	HOLDER, SPRING	Holder spring
95001-45300-40S	Fuel line	Hose
HONDA16950ZB4015	HOSE	Hose
HONDA950001-4519040	HOSE	Hose
0605513140	HOSE BAND	Hose band
HONDA95700-08020-00	HOSE BAND	Hose band
0601830727	IDLE CONTROL SWITCH	Idle control switch
0027103020	MACHINE SCREW	Machine screw
0027104010	MACHINE SCREW	Machine screw
7912310003	MUFFLER	Muffler
7900501212	NAME PLATE	Name plate
9405008000	NUT, FLANGE, 8MM	Nut flange 8mm
15600735700	DIPSTICK	Oil filter
0601830738	OPERATION SWITCH	Operation switch
04108-ZE2-000	Rocker cover	Service part / kit
0800628504	DECAL; GROUND	Service part / kit
0820610404	DECAL : WARNING	Service part / kit
13010-ZE3-003	Ring set (std)	Service part / kit
13101-ZE3-W00	Piston (std)	Service part / kit
13200-ZE3-020	Connecting rod (std)	Service part / kit
14711-ZE3-000	Valve, intake	Service part / kit
14721-ZE3-000	Valve, exhaust	Service part / kit
1560-735-00	Oil cap and indicator	Service part / kit
15600-ZG4-003	Oil cap	Service part / kit
16100-ZE3-V01	Carb assy.	Service part / kit
16610-ZE1-000	Choke lever	Service part / kit
1665419004	SHOCK MOUNT	Service part / kit
16955-ZE1-000	Fuel tank joint	Service part / kit
1725419214	RUBBER SUSPENSION	Service part / kit
17510-ZE3-010	Fuel tank	Service part / kit
17620-ZH7-023	Fuel cap	Service part / kit
18310-ZE2-W61	Muffler assy.	Service part / kit
18320-ZE3-W01	Muffler shield	Service part / kit
18330-ZH9-N00	Muffler pipe	Service part / kit
19610-ZE3-010ZA	Blower housing	Service part / kit
28462ZV7003	ROPE, RECOIL	Service part / kit
30009010	Pilot screw	Service part / kit
3015419604	SHOCK MOUNT	Service part / kit
34150-ZH7-003	Diode assy	Service part / kit
34150ZH7003	ALERT UNIT, OIL	Service part / kit
36-37	Assemblage châssis et pivot	Service part / kit
36100-ZE1-015	Switch, on/off	Service part / kit
38-39	Recoil Starter Assembly	Service part / kit
40-41	Fan Cover Assembly	Service part / kit
42-43	Camshaft/Valves Assembly	Service part / kit
44-45	Crankcase Assembly	Service part / kit
46-47	Crankshaft, Piston Assembly	Service part / kit
48-49	Governor Assembly	Service part / kit
50-51	Intake and Exhaust Assembly	Service part / kit
52-53	Air Cleaner Assembly	Service part / kit
54-55	Camshaft Assembly	Service part / kit
56-57	Carburetor Assembly	Service part / kit
573-014	Cylinder Barrel (Recoil) Assembly	Service part / kit
573-028	Fan Cover Assembly	Service part / kit
573-049	Crankcase Cover/Governor Assembly	Service part / kit
573-052	Idle Control Switch	Service part / kit
573-054	Full Power Switch	Service part / kit
573-058	Operation Switch	Service part / kit
573-062	AC Voltmeter	Service part / kit
573-064	Idle Control Switch	Service part / kit
573-068	Full Power Switch	Service part / kit
573-072	Operation Switch	Service part / kit
573-084	AC Voltmeter	Service part / kit
58-59	Control Assembly	Service part / kit
60-61	Crankcase Cover Assembly	Service part / kit
62-63	Crankshaft Assembly	Service part / kit
64-65	Cylinder Barrel Assembly	Service part / kit
66-67	Cylinder Head Assembly	Service part / kit
68-69	Fan Cover Assembly	Service part / kit
72-73	Ignition Coil Assembly	Service part / kit
7900636004	DECAL : OPERATE AT 3600 RPM ONLY	Service part / kit
80-81	Engine Operating Panel Assembly	Service part / kit
8700611804	P/N 8700611804	Service part / kit
8700611904	P/N 8700611904	Service part / kit
96100-62070-000	Ball bearing, crankshaft	Service part / kit
A9924800014	CAP FUEL TANK	Service part / kit
12391ZE2010	PACKING, HEAD COVER	Packing head cover
9430112200	PIN, DOWEL, 12X20	Pin dowel 12x20
18330ZE3700	PIPE, EX.	Pipe ex
0041208000	PLAIN WASHER	Plain washer
0602302001	PROTECTOR, MUFFLER	Protector muffler
0602302002	PROTECTOR, MUFFLER	Protector muffler
HONDA18320ZC2000	PROTECTOR, MUFFLER	Protector muffler
HONDA18325ZB4000	PROTECTOR, MUFFLER	Protector muffler
28421ZE3W01	PULLEY, RECOIL STARTER	Pulley recoil starter
28422ZE2W01	RATCHET, STARTER	Ratchet starter
95/27.5	Rated Amps	Rated current a
28400ZEZW01ZB	RECOIL STARTER	Recoil start
28400ZE3W01ZB	STARTER ASSY, RECOIL	Recoil start assy
0601823204	RECTIFIER	Rectifier
28444ZE2W01	RETAINER, SPRING	Retainer spring
28462ZE3W01	ROPE, RECOIL STARTER	Rope recoil starter
7901002403	ROTOR ASS’Y	Rotor assy
0805088004	RUBBER CUSHION	Rubber cushion
0602302003	SEAL	Seal
91201-ZE3-004	Oil seal MAG	Seal
HONDA18329ZB4000	SEAL	Seal
15510-ZE2-033	Oil level switch	Sensor
15510ZE2W01	OIL LEVEL SWITCH	Sensor
30500-ZE2-023	Ignition coil	Sensor
7901316004	SET BOLT, STATOR	Set bolt stator
0601823853	SLOW DOWN UNIT	Slow down unit
31ZH9600	Spark arrester screen	Spark plug
9807955846	SPARK PLUG	Spark plug
9807955855	PLUG, SPARK (W16EPRU ND)	Spark plug
28441ZE2W01	SPRING, FRICTION	Spring fricition
28443ZE2W01	SPRING, RATCHET	Spring ratchet
28442ZE2W01	SPRING, STARTER RETURN	Spring starter return
28400-ZE3-W01ZA	Starter assy., NEW STYLE	Starter
28422-ZE2-W01	Starter pawl	Starter
28434-ZE8-811	Starter pawl retainer	Starter
28442-ZE2-W01	Starter spring	Starter
28443-ZE2-W01	Starter pawl spring	Starter
28451-ZE3-A02	Starter cup	Starter
90003-ZG0-003	Starter center screw	Starter
TNR15G431K	SURGE ABSORBER	Surge absorber
0602322060	TAPPING SCREW	Tapping screw
HONDA90183-671-003	TAPPING SCREW	Tapping screw
90441ZE2010	WASHER COMP., HEAD COVER	Washer comp head cover

Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.

Aftermarket parts that fit this engine

12209-ZE8-003 FridayParts $15.00 19511-ZE3-000 FridayParts $26.56 16551-ZE3-000 FridayParts $16.05

Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.

Common questions

What is the oil capacity of the Honda GX340 K1?

The Honda GX340 K1 engine has an oil capacity of 1.1 liters.

What is the displacement of the Honda GX340 K1?

The Honda GX340 K1 has a displacement of 0.625 liters with 1 cylinders.

Which generators use the Honda GX340 K1 engine?

The Honda GX340 K1 powers 2 generator set(s), including Honda EB5000, MQ Power GA-6H.

How often should you change the oil in the Honda GX340 K1?

The Honda GX340 K1 oil change interval is every 200 hours.

What is a common problem with the Honda GX340 K1 engine?

A commonly reported issue on generators using the Honda GX340 K1 is: Rectifier failure. Fix: Replace the rectifier.