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Home›Kohler›Kohler PRO 5.2

Kohler PRO 5.2 Generator Set

The Kohler PRO 5.2 is a 4.5 kW (5.2 kVA) Gasoline standby generator set. It is available at 120 V and 240 V, single-phase, 60 Hz and rated 37.5 A. It holds about 1.1 L (0.3 gal) of oil. The set measures 670×545×535 mm (26.4×21.5×21.1 in) and weighs about 82 kg (181 lb). An integrated tank holds 30.2 L (8.0 gal), roughly 13 hours of runtime.

4.5 kW
Standby
1.1 L
Oil capacity
3
Document types

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On this pageSpecsMaintenanceDocumentsFAQService intervalsTorque & specsFluidsProcedures

Specifications

FuelGasoline
Frequency60.0 Hz
Standby power4.5 kW
Standby kVA5
Oil capacity1.1 L
Voltage options120 V, 240 V
Phase1
Rated current37.5 A
Dimensions (L×W×H)670×545×535 mm
Dry weight82 kg
Fuel tank30.2 L
Tank runtime13 hr

Filters & service parts

model family
ItemSpecCapacityPart #Interval
Air filterprecleaner—300 hr
Fuel filter—300 hr
Oil filter—100 hr
Battery—25 hr
Oil1.16—100 hr
Spark plug—500 hr

Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.

Service intervals

10
ItemActionHoursMonthsNotes
starter batteryCheck25 hr12 moEvery 25 hours or annually
air cleaner elementClean100 hr12 moEvery 100 hours or annually, more frequently under dusty conditions
cooling areasClean100 hr12 moEvery 100 hours or annually
low-profile air cleaner elementClean100 hr12 moEvery 100 hours or annually
oilChange100 hr12 moFirst service — Every 100 hours or annually
valve clearanceAdjust200 hrCheck and adjust when engine is cold, performed by Kohler dealer
air cleaner elementReplace300 hrEvery 300 hours
fuel filterCheck300 hrClean or replace if needed
low-profile air cleaner elementReplace300 hr
spark plugReplace500 hr12 moSet gap

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

23
TypeItemValueUnitCondition
GapSpark plug gap0.03in.
GapSpark plug gap0.76mm
Gapspark plug gap0.03 in.in.
OtherEngine RPM Range3450-3750rpm
TorqueCord management kit221in. lb.
TorqueCord management kit25N·m
TorqueHand truck handle kit0.5N·m
TorqueHand truck handle kit4in. lb.
TorqueIsolator kit221in. lb.
TorqueIsolator kit25N·m
TorqueLift kit221in. lb.
TorqueLift kit25N·m
TorqueOil drain plug13ft. lb.
TorqueOil drain plug17.6N·m
TorqueSpark plug20ft. lb.
TorqueSpark plug27N·m
TorqueWheel kit mounting nuts221in. lb.
TorqueWheel kit mounting nuts25N·m
TorqueWheelbarrow handle kit0.5N·m
TorqueWheelbarrow handle kit4in. lb.
Torqueoil drain plug13 ft. lb.ft. lb.
Torquespark plug20 ft. lb.ft. lb.
VoltageTotal Harmonic Distortion5%Maximum

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

FluidGradeStandardAmbientCapacityNotes
Engine oil10W-30API SJ or higherSelect viscosity based on air temperature at time of operation
Engine oil5W-30API SJ or higherSelect viscosity based on air temperature at time of operation
Engine oilSAE 30API SJ or higherSelect viscosity based on air temperature at time of operation
Engine oilSAE30Recommended oil type
FuelUnleaded gasoline, 87 (R+M)/2 or higherEPA/CARBRON 90 minimum; up to 10% ethanol; max 15% MTBE; do not use E15/E20/E85; do not use gasoline older than 30 days
Fuelunleaded gasoline87 octane (R+M)/2 or higher, RON 90 minimumFresh, clean fuel. Up to 10% ethanol acceptable. Do not use E15, E20, E85.

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

Procedures

12
Install Leg Kit installation
  1. Place 4 screws into holes of frame.
  2. Bring leg under frame and align screws with leg holes.
  3. Thread nuts to screws. Torque to 221 in. lb. (25 N·m).
Install Wheel Kit installation
  1. Place 4 screws into holes of frame.
  2. Bring bracket of wheel under frame and align screws with bracket holes.
  3. Thread nuts to screws. Torque to 221 in. lb. (25 N·m).
Air Cleaner maintenance
  1. Remove screw (T) and air cleaner cover (U).
  2. Remove foam element (V) from air cleaner base (W).
  3. Wash foam element (V) in warm water with detergent. Rinse and allow to air dry.
  4. Lightly oil foam element (V) with new engine oil; squeeze out excess oil.
  5. Reinstall foam element (V) into air cleaner base (W).
  6. Reinstall cover and secure with screw (T).
Air Cleaner Service maintenance

⚠ Operating engine with loose or damaged air cleaner components could cause premature wear

Tools: detergent, engine oil

  1. Remove screw (T) and air cleaner cover (U).
  2. Remove foam element (V) from air cleaner base (W).
  3. Wash foam element (V) in warm water with detergent. Rinse and allow to air dry.
  4. Lightly oil foam element (V) with new engine oil; squeeze out excess oil.
  5. Reinstall foam element (V) into air cleaner base (W).
  6. Reinstall cover and secure with screw (T).
Change Oil maintenance
  1. Clean area around oil fill cap/dipstick (N) and oil drain plug (M).
  2. Remove oil drain plug (M) and oil fill cap/dipstick (N). Drain oil completely.
  3. Reinstall oil drain plug (M). Torque to 13 ft. lb. (17.6 N·m).
  4. Fill crankcase with new oil, up to point of overflowing filler neck.
  5. Reinstall oil fill cap/dipstick (N) and tighten securely.
  6. Dispose of used oil in accordance with local ordinances.
Check Oil Level maintenance
  1. Ensure engine is cool. Clean oil fill/dipstick (N) areas.
  2. Remove oil fill/dipstick (N); wipe oil off.
  3. Check oil level. Level should be at top of indicator on dipstick (N).
  4. If oil is low, add oil up to point of overflowing filler neck.
  5. Reinstall oil fill/dipstick (N) and tighten securely.
Fuel Filter maintenance
  1. Open fuel tank cap (K).
  2. Remove fuel filter (AD) from tank neck.
  3. Clean fuel filter (AD) with non-flammable solvent. Dry fully. Replace as necessary.
  4. Reinstall fuel filter (AD).
  5. Reinstall fuel tank cap (K).
Replace Spark Plug maintenance

Tools: wire feeler gauge, wrench

  1. Clean out spark plug recess.
  2. Remove spark plug (Q) and replace.
  3. Check gap using wire feeler gauge. Adjust gap.
  4. Install spark plug (Q) into cylinder head.
  5. Torque spark plug (Q) to 20 ft. lb. (27 N·m).
Sediment Bowl maintenance
  1. Close fuel valve (X) and remove cover screws and nuts.
  2. Remove cover.
  3. Remove sediment bowl.
  4. Clean sediment bowl with non-flammable solvent. Dry fully.
  5. Check sediment bowl cover and gasket. Replace if damaged.
  6. Reinstall sediment bowl.
  7. Open tank fuel valve (X).
  8. Wipe off any trace of fuel with a clean cloth and check for leakage.
Spark Plugs maintenance

Tools: wire feeler gauge

  1. Clean out spark plug recess. Remove spark plug (Q) and replace.
  2. Check gap using wire feeler gauge. Adjust gap, see specification table.
  3. Install spark plug (Q) into cylinder head.
  4. Torque spark plug (Q) to 20 ft. lb. (27 N·m).
Storage maintenance
  1. Add Kohler PRO Series fuel treatment or equivalent to fuel tank. Run engine 2-3 minutes.
  2. Change oil while engine is still warm. Remove spark plug (Q) and pour about 1 oz. of engine oil into cylinder(s).
  3. Replace spark plug (Q) and crank engine slowly to distribute oil.
  4. Clean generator.
  5. Store generator in a dry, well-ventilated place, with cover placed over it after engine and muffler/shield have cooled.
Battery Charging Using DC Receptacle operation
  1. Start generator.
  2. Press DC circuit protector (E) in.
  3. Connect red battery charger lead to positive battery terminal. Connect black lead to negative terminal. Do not reverse.
  4. Connect cord to DC receptacle (F).

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 size generator is the Kohler PRO 5.2?

The Kohler PRO 5.2 is rated 4.5 kW standby (5.2 kVA).

Is the Kohler PRO 5.2 diesel or gas?

The Kohler PRO 5.2 runs on Gasoline.

What is the oil capacity of the Kohler PRO 5.2?

The Kohler PRO 5.2 has an engine oil capacity of 1.1 liters (1.2 US quarts), per the manufacturer specification sheet.

What is the dry weight of the Kohler PRO 5.2?

The Kohler PRO 5.2 has a dry weight of 82 kg (180 lb).

What size fuel tank does the Kohler PRO 5.2 have?

The Kohler PRO 5.2 has a 30.2 liter (8 US gallon) fuel tank, giving about 13 hours of runtime.

What voltage does the Kohler PRO 5.2 produce?

The Kohler PRO 5.2 is offered in 120 V, 240 V, 1-phase.

Troubleshooting

1

Symptoms & remedies

SymptomCauseRemedy
Engine Not Starting/Running AbnormallyEngine Stopped No Electric Current Tripping of Circuit BreakerLoad connected to generating set during start-up Start and Stop control ON or OFF Oil level too low Unsuitable fuel level too low Fuel valve closed Clogged fuel filter Clogged fuel strainer Clogged air filter Faulty spark plug Fuel supply blocked or leaking Faulty starter battery Blocked ventilation inlets Circuit protectors not actuated Faulty appliance supply cord Faulty electrical sockets Faulty alternator Device connected or faulty cord Overload Battery Incorrectly Connected

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

Repair guides

8

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

Available documents

Spec sheet (Kohler)Reference — portable chart (Kohler)Owner's manual (Kohler)Owner's manual — 35 590 01 Rev D (Kohler)Owner's manual — 35 590 01 rev 5 14 (Kohler)Owner's manual — 37 590 01 (Kohler)Owner's manual — 37 590 02 (Kohler)Owner's manual — 37 590 01 (Kohler)Owner's manual — 37 590 01 Rev I (Kohler)Owner's manual — 37 590 02 (Kohler)Owner's manual — 37 590 02 Rev G (Kohler)Owner's manual — tp7033cmp (Kohler)

This page was generated from the 12 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.