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Kohler ES799 Generator Set

The Kohler ES799 is a 1.25 kW natural gas standby generator set powered by a K161 engine.

1 kW
Standby
1
Document types

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Compare with other 0–5 kW Natural Gas generators →

Service parts for the ES799

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

Air intake

1 required
E-4655Air filtersee priceAmazon

Fuel system

1 required
801112Fuel filtersee priceAmazon

Oil system

1 required

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

Specifications

Fuelnatural gas
Standby power1 kW

Engine

K161

Maintenance & consumables

for the K161
ItemSpecCapacityPart #Interval
Air filterK&N low restriction element in production filter housingE-4655 Amazon eBay
Fuel filterFuel Filter801112 Amazon eBay
Oil filterOil Filter801111 Amazon $69.06 eBay $107.90
Battery150 hr
Belt300 hr
Coolant
Coolant filter
OilResolute brand non-detergent 30 weight oil4.0 quarts50 hr
Spark plug200 hr

Common questions

What is the power rating of the Kohler ES799?

The Kohler ES799 is rated 1 kW standby.

What engine does the Kohler ES799 use?

The Kohler ES799 is powered by the K161 engine.

What kind of fuel does the Kohler ES799 run on?

The Kohler ES799 runs on natural gas.

Which oil filter part number does the Kohler ES799 take?

The Kohler ES799 uses oil filter part number 801111.

What fuel filter fits the Kohler ES799?

The Kohler ES799 uses fuel filter part number 801112.

What air filter does the Kohler ES799 use?

The Kohler ES799 uses air filter part number E-4655.

Troubleshooting

6

Symptoms & remedies

SymptomCauseRemedy
No build-up.L Open circuit between battery and field. l Battery discharged.*Make correct connections. *l Charge battery.
Generator output erratic.L Regulator sensing terminals not connected properly.*Check terminals 5 and 6 (120 V. connection) or terminals 5 and 7 (240 V. connection). *l Correct connections.
Badly worn, dirty or improperly seated brushes.*Replace, clean or reseat brushes.
S1 to terminal t3 on regulator open.*Correct connections.
Dirty commutator.*Clean commutator.
Choke heater circuit failureThe choke valve could ‘stick’ the air cleanerCheck the Ohm value of the resistor with a Volt-Ohmmeter. If faulty and allows higher voltage, it could cause the choke for starting

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Kohler ES799 troubleshooting guide (17 entries) →

Parts

33
Part #DescriptionQtySystem
235838Stellite exhaust valve1Exhaust valve Amazon eBay $33.29
240705-SSPARK PLUG1Spark plug Amazon eBay $79.00
45-067-16Kohler K341 crankshaft (standard crankpin diameter)Crankshaft Amazon eBay
45-067-18Kohler K341 crankshaft (.010 under crankpin diameter)Crankshaft Amazon eBay
47-874-18Kohler piston (D style, .010 oversize)Piston Amazon eBay
691163Oil Pump, Cam On LH Side (RH Pump Gear Helix)1Pump Amazon eBay
691165Oil Pump Strainer: X3631Pump Amazon eBay
691166Oil Pump Strainer: X3701Pump Amazon eBay
801111Oil Filter1Oil filter Amazon $69.06 eBay $107.90
801112Fuel Filter1Fuel filter Amazon eBay
891164Fuel Pump1Pump Amazon eBay
891166Thermostat (160 Degree)1Thermostat Amazon eBay
E-4655K&N low restriction element in production filter housing1Air filter Amazon eBay
191257STD Piston Assembly6Service part / kit Amazon eBay
191258.020 Piston Assembly6Service part / kit Amazon eBay
191259.030 Piston Assembly6Service part / kit Amazon eBay
191261.040 Piston Assembly6Service part / kit Amazon eBay
191262.060 Piston Assembly6Service part / kit Amazon eBay
191263STD Piston Ring Set (1-3/32 1-1/8 1-3/16)6Service part / kit Amazon eBay
191264.020 Piston Ring Set (1-3/32 1-1/8 1-3/16)6Service part / kit Amazon eBay
191265.030 Piston Ring Set (1-3/32 1-1/8 1-3/16)6Service part / kit Amazon eBay
191266.040 Piston Ring Set (1-3/32 1-1/8 1-3/16)6Service part / kit Amazon eBay
191267STD Piston Ring Set (1-3/32 1-1/8 2-3/16)6Service part / kit Amazon eBay
191268.020 Piston Ring Set (1-3/32 1-1/8 2-3/16)6Service part / kit Amazon eBay
401134Intake Valve Seat6Service part / kit Amazon eBay
491261Rocker Arm12Service part / kit Amazon eBay
491262Rocker Arm Adjusting Screw12Service part / kit Amazon eBay
491263Rocker Arm Shaft2Service part / kit Amazon eBay
491266Rocker Arm Shaft Spring6Service part / kit Amazon eBay
591163Crank Gear1Service part / kit Amazon eBay
591184Push Rod12Service part / kit Amazon eBay
591187Cam Gear1Service part / kit Amazon eBay
691168Oil Pressure Regulator1Service 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

Engine spec — es799 (Kohler)
Full service, cheapest listings

Priced items from this model's own parts manual.

Oil filter 801111$69.06
1 priced item$69.06