HomeKohlerKohler ES799

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

How to read your Kohler serial & model number →

Specifications

Fuelnatural gas
Standby power1 kW

Engine

K161

Maintenance & consumables

for the K161
ItemSpecCapacityPart #Interval
Air filter50 hr find
Fuel filter200 hr find
Oil filter50 hr find
Belt300 hr find
Coolant
Coolant filter find
Oil50 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 fuel does the Kohler ES799 use?

The Kohler ES799 runs on natural gas.

Troubleshooting

17

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
Cranking contactor C contacts do not close when switch is moved to on positionReplace relay C
Cranking reset trips during crankingReset the reset button--if plant still does not crank, check for open circuit
Insufficient loadA load of 60 watts or more is needed to start automatic plant. A remote switch can be added to test run these plants--check diagrams
Load relay L dirty or open contactsCheck for dirty or open contacts--replace relay if needed
Center tap missing on three wire automatic plantsCheck for loose leads or missing center tap
Starter not engagingDrive pinion may be spinning. Automotive crank plants only
Battery not being charged properlyCheck condition of battery--may be sulfated or have cracked cell. Replace as neededCheck charge switch if left in HAND CRANK position, battery will not be charged
Generator faulty on plants with automotive crankingCheck for faulty DC generator--excessive resistance in R2 resistor. If overcharging occurs, R2 resistance may be too little
No outflow (no exciter voltage-into AC volts)Regulator relay RR could be causing overcharged or undercharged battery--check this after resistor checkCheck contacts of relay CC may not be closing to complete battery charging circuit. Check brushes, AC leads, and AC armature for open circuits
AC voltage but no exciter voltageAC brushes not riding on collector rings--check for sticking or excessively worn brushesCheck for open AC lead. Lift AC brushes and check for open circuit in AC armature
Check field circuit for open shuntOpen field resistor connection

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

Parts

6
Part #DescriptionQtySystem
235838Stellite exhaust valve1Exhaust valve PartsGeek
240705-SSPARK PLUG1Spark plug PartsGeek
45-067-16Kohler K341 crankshaft (standard crankpin diameter)Crankshaft PartsGeek
45-067-18Kohler K341 crankshaft (.010 under crankpin diameter)Crankshaft PartsGeek
47-874-18Kohler piston (D style, .010 oversize)Piston PartsGeek
E-4655K&N low restriction element in production filter housing1Air filter PartsGeek

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.

Fuel consumption

RatingLoadL/hgal/h
Standby0%
Standby0%
Standby0%
Standby1%

Available documents

Engine spec — es799 (Kohler)