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Kohler CH740 Generator Set

The Kohler CH740 is a generator set powered by a Kohler CH 740 engine. It holds about 2 L (0.5 gal) of oil. The same CH 740 engine also powers generator sets from SDMO.

0.725 L
Displacement
2.0 L
Oil capacity
4
Document types

How to read your Kohler serial & model number →

Service parts for the CH740

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

Oil system

1 required

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

Specifications

Oil capacity2.0 L

Engine

Kohler CH 740
Oil capacity2.0 L
Coolant capacity0.0 L
Displacement0.725 L
Aspirationair-cooled
Rated speed3000 rpm

Same engine, other brands

1 brand

The Kohler CH 740 in this set also powers 1 generator set sold under 1 other brand. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.

BrandModels
SDMORES 12 TEC

Maintenance & consumables

for the Kohler CH 740
ItemSpecCapacityPart #Interval
Air filter—300 hr
Fuel filterfuel system—
Oil filter52 050 02-S200 hr Amazon
Batterybattery—200 hr
Beltcoupling—
Coolant—
Coolant filter—150 hr
Oil2.7 L—300 hr
Spark plug0.76 mm (0.030 in.) gap—300 hr

Service intervals

30
ItemActionHoursMonthsNotes
Low-profile precleanerClean25 hr12 moService/replace
Low-profile precleanerReplace25 hr12 moService/replace; or annually. Air Cleaner/Intake
Préfiltre profil basReplace25 hrSur une base annuelle¹ ou toutes les 25 heures; entretenir/remplacer
Ailettes de refroidissementClean100 hrSur une base annuelle¹ ou toutes les 100 heures; vérifier et nettoyer comme indiqué
Cooling shroudsClean100 hr12 moRemove cooling shrouds and clean cooling areas
Cooling shrouds and cooling areasClean100 hr12 moRemove cooling shrouds and clean cooling areas
Cooling shrouds/areasClean100 hr12 moEvery 100 Hours or Annually; remove cooling shrouds and clean cooling areas
Engine oilChange100 hr12 mo
Enveloppes du système de refroidissement et zones de refroidissementClean100 hrSur une base annuelle¹ ou toutes les 100 heures; déposez les enveloppes
HuileChange100 hrSur une base annuelle¹ ou toutes les 100 heures
Oil cooler finsCheck100 hr12 moEvery 100 Hours or Annually (if equipped); clean as necessary
Oil cooler finsInspect100 hr12 moCheck; clean as necessary (if equipped)
low-profile air cleaner elementReplace100 hr12 moOr annually
oilChange100 hr12 moOr annually
Élément du filtre à air basReplace100 hrSur une base annuelle¹ ou toutes les 100 heures
Filtre à carburantReplace200 hrToutes les 200 heures
Filtre à huileChange200 hrToutes les 200 heures
Fuel filterReplace200 hrEvery 200 Hours
Oil filterChange200 hrEvery 200 Hours. Lubrication System
Heavy-duty air cleaner elementReplace250 hr12 moand check inner element
Heavy-duty air cleaner element / inner elementReplace250 hrEvery 250 Hours; replace element and check inner element
heavy-duty air cleaner element and inner elementReplace250 hrReplace element and check inner element
Élément du filtre à air haut rendementReplace250 hrToutes les 250 heures¹; contrôlez l'élément interne
Filtre et huileChange300 hrToutes les 300 heures³; huile KOHLER PRO 10W-50 et filtre KOHLER PRO uniquement
BougieReplace500 hrToutes les 500 heures¹; réglez l'écartement
Crankshaft splineLubricate500 hrHave a Kohler authorized dealer perform this service
Heavy-duty inner air cleaner elementReplace500 hr12 moEvery 500 Hours
Rainure du vilebrequinLubricate500 hrToutes les 500 heures²; confiez ces travaux à un concessionnaire agréé Kohler
Spark plugsReplace500 hr12 moand set gap. Electrical System
Élément du filtre à air bas haut rendementReplace500 hrToutes les 500 heures¹

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

60
TypeItemValueUnitCondition
AngleMaximum Angle of Operation25°@ full oil level
ClearanceCamshaft End Play (w/shim)0.076/0.127mm0.0030/0.0050 in.
ClearanceCamshaft Running Clearance0.025/0.063mm0.0010/0.0025 in.
ClearanceCamshaft bore I.D. (max wear limit)20.038 mm (0.7889 in.)mmmax wear limit
ClearanceCamshaft bore I.D. (new)20.000/20.025 mm (0.7874/0.7884 in.)mmnew
ClearanceCamshaft end play (w/shim)0.076/0.127 mm (0.0030/0.0050 in.)mm
ClearanceCamshaft running clearance0.025/0.063 mm (0.0010/0.0025 in.)mm
ClearanceConnecting Rod-to-Crankpin Running ClearanceNew: 0.030/0.055 mm (0.0012/0.0022 in.); Max Wear Limit: 0.070 mm (0.0028 in.)mm (in.)
ClearanceConnecting Rod-to-Crankpin Running Clearance (Max. Wear Limit)0.070mm0.0028 in.
ClearanceConnecting Rod-to-Crankpin Running Clearance (New)0.030/0.055mm0.0012/0.0022 in.
ClearanceConnecting Rod-to-Crankpin Side Clearance0.26/0.63mm0.0102/0.0248 in.
ClearanceConnecting rod-to-crankpin running clearance (max wear limit)0.070 mm (0.0028 in.)mmmax wear limit
ClearanceConnecting rod-to-crankpin running clearance (new)0.030/0.055 mm (0.0012/0.0022 in.)mmnew
ClearanceConnecting rod-to-crankpin running clearance, max wear limit0.070mm (0.0028 in.)max wear limit
ClearanceConnecting rod-to-crankpin running clearance, new0.030/0.055mm (0.0012/0.0022 in.)new
ClearanceConnecting rod-to-crankpin side clearance0.26/0.63 mm (0.0102/0.0248 in.)mm
ClearanceCrankshaft End Play (except CH25 below Serial No. 2403500008)0.050/0.750mm0.0020/0.0295 in.
ClearanceCrankshaft End Play (free)0.070/0.590mm0.0028/0.0230 in.
ClearanceCrankshaft End Play (w/thrust bearing components)0.070/1.190mm0.0028/0.0468 in.
ClearanceCrankshaft end play (except CH25 engines below Serial No. 2403500008)0.050/0.750 mm (0.0020/0.0295 in.)mm
ClearanceCrankshaft end play (free)0.070/0.590 mm (0.0028/0.0230 in.)mmfree
ClearanceCrankshaft end play (thrust bearing models, for adjustment)0.05/0.50 mm (0.0020/0.0197 in.)mm
ClearanceCrankshaft end play (w/thrust bearing components)0.070/0.270 mm (0.0028/0.0100 in.)mm
ClearanceCylinder Bore I.D.New: 77.000/77.025 mm (3.0315/3.0325 in.); Max Wear Limit: 77.063 mm (3.0340 in.)mm (in.)77 mm bore
ClearanceCylinder Bore I.D.New: 80.000/80.025 mm (3.1496/3.1506 in.); Max Wear Limit: 80.065 mm (3.1522 in.)mm (in.)80 mm bore
ClearanceCylinder Bore I.D.New: 82.988/83.013 mm (3.2672/3.2682 in.); Max Wear Limit: 83.051 mm (3.2697 in.)mm (in.)83 mm bore
ClearanceCylinder Head Max. Out-of-Flatness0.076mm77 mm and 80 mm bores; 0.003 in.
ClearanceCylinder Head Max. Out-of-Flatness0.076 mm (0.003 in.) for 77 mm and 80 mm bores; 0.1 mm (0.004 in.) for 83 mm boremm (in.)
ClearanceCylinder Head Max. Out-of-Flatness0.1mm83 mm bore; 0.004 in.
ClearanceCylinder bore I.D. (CH18/CH20/CH22/CH620-CH640, new)77.000/77.025 mm (3.0315/3.0325 in.)mmnew
ClearanceCylinder bore I.D. (CH22/CH23/CH670-CH680, new)80.000/80.025 mm (3.1496/3.1506 in.)mmnew
ClearanceCylinder bore I.D. (CH25/CH730/CH740/CH750, new)82.988/83.013 mm (3.2672/3.2682 in.)mmnew
ClearanceCylinder head max out-of-flatness0.076 mm (0.003 in.)mm
ClearanceExhaust Valve Guide I.D. Max. Wear Limit7.159mm0.2819 in.
ClearanceExhaust Valve Minimum Lift8.07mm0.3177 in.
ClearanceExhaust Valve Stem-to-Valve Guide Running Clearance0.050/0.088mm0.0020/0.0035 in.
ClearanceExhaust valve guide I.D. (max wear limit)7.159 mm (0.2819 in.)mmmax wear limit
ClearanceExhaust valve minimum lift8.07 mm (0.3177 in.)mm
ClearanceExhaust valve stem-to-guide running clearance0.050/0.088mm (0.0020/0.0035 in.)
ClearanceExhaust valve stem-to-valve guide running clearance0.050/0.088 mm (0.0020/0.0035 in.)mm
ClearanceGovernor cross shaft-to-crankcase running clearance, 6 mm shaft0.013/0.075mm (0.0005/0.0030 in.)6 mm shaft
ClearanceGovernor cross shaft-to-crankcase running clearance, 8 mm shaft0.025/0.126mm (0.0009/0.0049 in.)8 mm shaft
ClearanceHydraulic Valve Lifter to Crankcase Running Clearance0.0241/0.0501mm0.0009/0.0020 in.
ClearanceHydraulic valve lifter to crankcase running clearance0.0241/0.0501 mm (0.0009/0.0020 in.)mm
ClearanceIntake Valve Guide I.D. Max. Wear Limit7.134mm0.2809 in.
ClearanceIntake Valve Minimum Lift8.07mm0.3177 in.
ClearanceIntake Valve Stem-to-Valve Guide Running Clearance0.038/0.076mm0.0015/0.0030 in.
ClearanceIntake valve guide I.D. (max wear limit)7.134 mm (0.2809 in.)mmmax wear limit
ClearanceIntake valve guide I.D. (new)7.038/7.058 mm (0.2771/0.2779 in.)mmnew
ClearanceIntake valve minimum lift8.07 mm (0.3177 in.)mm
ClearanceIntake valve stem-to-guide running clearance0.038/0.076mm (0.0015/0.0030 in.)
ClearanceIntake valve stem-to-valve guide running clearance0.038/0.076 mm (0.0015/0.0030 in.)mm
ClearanceNominal Valve Seat Angle45°
ClearanceNominal valve seat angle45°degrees
ClearancePiston Thrust Face-to-Cylinder Bore Running Clearance (New, Style A)0.039/0.082mm0.0015/0.0032 in.
ClearancePiston pin O.D. (new)16.995/17.000 mm (0.6691/0.6693 in.)mmnew
ClearancePiston-to-piston pin running clearance0.006/0.017 mm (0.0002/0.0007 in.)mm
ClearanceSpark plug gap0.76 mm (0.030 in.)mm
ClearanceValve Guide Reamer Size (0.25 mm O.S.)7.298mm0.2873 in.
ClearanceValve Guide Reamer Size (Standard)7.048mm0.2775 in.

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 oilAPI service class SJ or higher (including synthetic)1.6 LKohler oils recommended. Select viscosity based on air temperature at time of operation (chart).
Engine oil10W-30Voir tableau de viscosité.
Engine oil5W-30Voir tableau de viscosité.
Engine oilAPI service class SJ or higher (including synthetic)API SJ or higher1.6 LKohler oils recommended for best performance; select viscosity based on air temperature at time of operation (capacity is refill)
Engine oilAPI service class SJ or higher; viscosity per temperature chartAPI SJ or higher1.6 LRecommended Kohler oils; other high-quality detergent oils including synthetic acceptable.
Engine oilKOHLER PRO 10W-50API SJ ou supérieure1.0 LHuile synthétique toutes saisons; intervalle de 300 heures avec filtre à huile KOHLER PRO longue durée.
Engine oilKohler oils; other high-quality detergent oils including syntheticAPI service class SJ or higher1.6 LSelect viscosity based on air temperature at time of operation: 5W-30, 10W-30, SAE 30
Engine oilSAE 30Voir tableau de viscosité.
Engine oilSAE 30 above 10°C (50°F); SAE 20 from -17.8°C (0°F) to 10°C (50°F); SAE 10 below -17.8°C (0°F)0.47 LWet disc type clutch oil splash lubrication; use 0.47 L (1 pt.) of motor oil of proper viscosity.
Fuel87 (R+M)/2 octane or higher; RON 90 octane minimumClean, fresh, unleaded gasoline. Up to 10% ethyl alcohol/90% unleaded acceptable; MTBE up to 15% by volume approved. Do not add oil. Do not use gasoline older than 30 days. E15, E20 and E85 are NOT approved.
FuelClean, fresh, unleaded gasolineOctane rating 87 (R+M)/2 or higher; RON 90 octane minimumGasoline up to 10% ethyl alcohol, 90% unleaded acceptable; MTBE and unleaded gasoline blend (max 15% MTBE by volume) approved; E15, E20 and E85 NOT approved; do not use gasoline older than 30 days
FuelEssence sans plombIndice d'octane 87 (R+M)/2 ou plus; RON minimum 90Jusqu'à 10% d'alcool éthylique; MTBE max 15% volume; E15/E20/E85 NON compatibles; essence de plus de 30 jours non recommandée.
FuelUnleaded gasoline, 87 (R+M)/2 or higher; RON 90 octane minimumUp to 10% ethyl alcohol; MTBE max 15% by volumeE15, E20 and E85 are NOT approved and should NOT be used; do not use gasoline older than 30 days.
GreaseKohler 52 357 01-S (inertia drive) / 52 357 02-S (solenoid shift) starter drive lubricant; Kohler 25 357 12-S spline drive lubricant; Camshaft Lubricant Valspar ZZ613 (Kohler 25 357 14-S)Lubricants/aids listed in Tools and Aids.
OtherSAE 30 above 10°C (50°F); SAE 20 -17.8°C (0°F) to 10°C (50°F); SAE 10 below -17.8°C (0°F)-17°C to 10°C0.47 LWet disc type clutch; oil splash type lubrication; use motor oil of proper viscosity
OtherSAE 30 above 10°C (50°F); SAE 20 from -17.8°C (0°F) to 10°C (50°F); SAE 10 below -17.8°C (0°F)above -17°C0.47 LWet disc type clutch oil (0.47 L / 1 pt.) motor oil of proper viscosity per chart
OtherSAE 30 above 10°C (50°F)motor oilabove 10°C0.47 LWet disc type clutch oil splash lubrication; use 0.47 L (1 pt.) of motor oil. SAE 20 for -17.8°C (0°F) to 10°C (50°F); SAE 10 for below -17.8°C (0°F).

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
Adjust Governed Idle Speed adjustment

Tools: Tachometer

  1. Hold governor lever away from carburetor so throttle lever is against idle speed screw.
  2. Start engine and warm up; adjust screw to approximately 1200 RPM.
  3. Release governor lever and check throttle lever is in idle position.
  4. Turn governed idle adjustment screw to obtain equipment manufacturer recommended idle speed (1500-1800 RPM).
  5. Move throttle lever to wide-open/full throttle and set high speed screw to intended no-load RPM.
Adjust Low Idle Fuel adjustment

⚠ Do not attempt to remove limiter caps.

  1. Place throttle control into idle or slow position; adjust low idle speed to 1200 RPM.
  2. Turn low idle fuel adjusting needle out (counterclockwise) until engine speed decreases (rich); note position.
  3. Turn needle in (clockwise); note position where speed decreases (lean).
  4. Set adjusting needle midway between rich and lean settings.
  5. Repeat for other low idle adjustment needle on two-barrel carburetor.
  6. Recheck/adjust low idle speed to specified setting.
Adjust Low Idle Speed (RPM) adjustment

Tools: Tachometer

  1. Place throttle control into idle or slow position.
  2. Turn low idle speed adjusting screw in or out to obtain 1200 RPM (± 75 RPM).
  3. Check speed using a tachometer.
Carburetor Low Idle Fuel Adjustment adjustment

⚠ Do not attempt to remove limiter caps.

Tools: tachometer

  1. Place throttle control into idle or slow position; adjust low idle speed to 1200 RPM.
  2. Turn low idle fuel adjusting needle out (counterclockwise) until engine speed decreases (rich); note position.
  3. Turn needle in (clockwise) until engine speed decreases (lean); note position.
  4. Set adjusting needle midway between rich and lean settings.
  5. Repeat for other low idle adjustment needle on two-barrel carburetor.
  6. Recheck/adjust low idle speed to specified setting.
Clutch Adjustment (wet disc type) adjustment

⚠ Do not attempt to pry or force spring lock away from ring.

Tools: large screwdriver

  1. Release clutch and remove nameplate. Using a large screwdriver, turn adjusting ring clockwise, one notch at a time, until firm pressure is required to engage clutch.
  2. After adjustment, engage clutch and check that rollers go over center to lock unit in engaged position and prevent releasing under load.
  3. If trouble persists after readjustment, clutch reconditioning is indicated.
Determining Camshaft End Play adjustment

Tools: camshaft end play checking tool, feeler gauge

  1. Install shim removed during disassembly onto camshaft.
  2. Position camshaft end play checking tool on camshaft.
  3. Apply pressure on checking tool (pushing camshaft toward crankshaft). Use a feeler gauge to measure camshaft end play between shim spacer and checking tool. End play should be 0.076/0.127 mm (0.003/0.
  4. If end play is not within range, remove checking tool and replace shim as necessary.
  5. Reinstall end play checking tool and recheck end play.
Digital Linear Actuator (DLA) Adjustment adjustment

Tools: Torque wrench

  1. DLA must be in fully retracted position during assembly.
  2. Loosen DLA mounting plate screws located on top of actuator plate.
  3. With throttle linkage centered in U-Clip or secured with retaining clip at end of DLA shaft, slide DLA bracket assembly back until throttle plate is fully open.
  4. Torque mounting plate screws to 2.5 N·m (22 in. lb.).
Governed Idle Speed Adjustment adjustment

Tools: tachometer, pliers

  1. Hold governor lever away from carburetor so throttle lever is against idle speed adjustment screw. Start engine and warm up, then adjust screw to approximately 1200 RPM using a tachometer.
  2. Release governor lever and check throttle lever is in idle position. Turn governed idle adjustment screw to obtain equipment manufacturer's recommended idle speed (1500-1800 RPM).
  3. Move throttle lever to wide-open/full throttle and hold. Turn high speed screw to obtain intended high speed no-load RPM.
Governor Initial Adjustment adjustment

⚠ Do not tamper with governor setting. Overspeed is hazardous and could cause personal injury.

Tools: Torque wrench

  1. Make sure throttle linkage is connected to governor arm and throttle lever on carburetor.
  2. Loosen nut holding governor lever to cross shaft.
  3. Move governor lever toward carburetor as far as it will go (wide open throttle) and hold in this position.
  4. Insert a long thin rod or tool into hole on cross shaft and rotate shaft counterclockwise (viewed from end) as far as it will turn, then torque nut to 6.8 N·m (60 in. lb.).
Governor Sensitivity Adjustment adjustment
  1. To increase sensitivity, move spring closer to governor cross shaft.
  2. To decrease sensitivity, move spring away from governor cross shaft.
High Speed (RPM) Adjustment adjustment

Tools: Tachometer

  1. With engine running, move throttle control to fast.
  2. Turn inner adjustment screw outward to decrease, or inward to increase RPM speed.
Ignition Module Air Gap Adjustment adjustment

⚠ Do not attempt to set the gap with a business card or folded microfiche card. Use the feeler gauge specified.

Tools: Feeler gauge 0.30 mm (0.012 in.), Torque wrench

  1. Turn flywheel magnet away from module position.
  2. Attach module to mounting legs, pull it away from flywheel, and tighten screws temporarily.
  3. Rotate flywheel so magnet is centered under module.
  4. Position a 0.30 mm (0.012 in.) feeler gauge between magnet and all three legs of module.
  5. Loosen mounting screws, allow magnet to pull module down against feeler gauge, and retighten mounting screws.
  6. Rotate flywheel to remove feeler gauge, position magnet back under module, and recheck gap minimum 0.28 mm (0.011 in.) under each leg. Torque screws to 4.0 N·m (35 in. lb.).

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 is in the Kohler CH740?

The Kohler CH740 is powered by the Kohler CH 740 engine.

How much oil does the Kohler CH740 take?

The Kohler CH 740 engine in the Kohler CH740 has an oil capacity of 2.0 liters.

What oil filter fits the Kohler CH740?

The Kohler CH740 uses oil filter part number 52 050 02-S.

Troubleshooting

17

Symptoms & remedies

SymptomCauseRemedy
Engine is hard to startFuel system related problem (fuel tank not filled with clean, fresh gasoline; blocked or improperly operating fuel tank cap vent; closed fuel tank shut-off valve; dirty or obstructed in-line fuel filter; fuel not reaching carburetor due to restrictions or faulty fuel lines and fuel pump; dirty air cleaner element or loose air cleaner element components)Check the listed fuel system areas before adjusting the carburetor; it may be necessary to adjust or service the carburetor
Engine runs roughlyFuel system related problem (fuel tank not filled with clean, fresh gasoline; blocked or improperly operating fuel tank cap vent; closed fuel tank shut-off valve; dirty or obstructed in-line fuel filter; fuel not reaching carburetor due to restrictions or faulty fuel lines and fuel pump; dirty air cleaner element or loose air cleaner element components)Check the listed fuel system areas before adjusting the carburetor; it may be necessary to adjust or service the carburetor
Engine stalls at low idle speedFuel system related problem (fuel tank not filled with clean, fresh gasoline; blocked or improperly operating fuel tank cap vent; closed fuel tank shut-off valve; dirty or obstructed in-line fuel filter; fuel not reaching carburetor due to restrictions or faulty fuel lines and fuel pump; dirty air cleaner element or loose air cleaner element components)Check the listed fuel system areas before adjusting the carburetor; it may be necessary to adjust or service the carburetor
MIL comes onProblem or fault detected within the EFI systemMake initial checks in the listed areas; if these checks do not correct the problem, or the MIL remains on, further diagnosis and servicing by an authorized Kohler Engine Dealer is necessary
Engine is hard to startEFI system problem (fuel tank not filled with clean, fresh gasoline or shut-off valve not opened completely; blocked or improperly operating fuel tank vent cap; dirty air cleaner element and precleaner or components not properly secured; improper, dirty, or obstructed fuel filter; loose connections to sensors, ECU, and fuel injectors; poor or discharged 12 volt battery)Make initial checks in the listed areas; if these checks do not correct the problem, or the MIL remains on, further diagnosis and servicing by an authorized Kohler Engine Dealer is necessary
Engine runs roughlyEFI system problem (fuel tank not filled with clean, fresh gasoline or shut-off valve not opened completely; blocked or improperly operating fuel tank vent cap; dirty air cleaner element and precleaner or components not properly secured; improper, dirty, or obstructed fuel filter; loose connections to sensors, ECU, and fuel injectors; poor or discharged 12 volt battery)Make initial checks in the listed areas; if these checks do not correct the problem, or the MIL remains on, further diagnosis and servicing by an authorized Kohler Engine Dealer is necessary
Engine stalls at low idle speedEFI system problem (fuel tank not filled with clean, fresh gasoline or shut-off valve not opened completely; blocked or improperly operating fuel tank vent cap; dirty air cleaner element and precleaner or components not properly secured; improper, dirty, or obstructed fuel filter; loose connections to sensors, ECU, and fuel injectors; poor or discharged 12 volt battery)Make initial checks in the listed areas; if these checks do not correct the problem, or the MIL remains on, further diagnosis and servicing by an authorized Kohler Engine Dealer is necessary
Will Not StartImproper fuel; dirt in fuel line/system; dirty grass screen; incorrect oil level; engine overloaded; dirty air cleaner; faulty spark plug
Hard StartingImproper fuel; dirt in fuel line/system; dirty grass screen; incorrect oil level; engine overloaded; dirty air cleaner; faulty spark plug
Stops SuddenlyImproper fuel; dirt in fuel line/system; dirty grass screen; incorrect oil level; engine overloaded; dirty air cleaner; faulty spark plug
Lacks PowerImproper fuel; dirt in fuel line/system; dirty grass screen; incorrect oil level; engine overloaded; dirty air cleaner; faulty spark plug
Operates ErraticallyImproper fuel; dirt in fuel line/system; dirty grass screen; incorrect oil level; engine overloaded; dirty air cleaner; faulty spark plug
Knocks or PingsImproper fuel; dirt in fuel line/system; dirty grass screen; incorrect oil level; engine overloaded; dirty air cleaner; faulty spark plug
Skips or MisfiresImproper fuel; dirt in fuel line/system; dirty grass screen; incorrect oil level; engine overloaded; dirty air cleaner; faulty spark plug
BackfiresImproper fuel; dirt in fuel line/system; dirty grass screen; incorrect oil level; engine overloaded; dirty air cleaner; faulty spark plug
OverheatsImproper fuel; dirt in fuel line/system; dirty grass screen; incorrect oil level; engine overloaded; dirty air cleaner; faulty spark plug
High Fuel ConsumptionImproper fuel; dirt in fuel line/system; dirty grass screen; incorrect oil level; engine overloaded; dirty air cleaner; faulty spark plug

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

Repair guides

4

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

Parts

250
Part #DescriptionQtySystem
103-0731Gasket, Gearcase1Gasket Amazon eBay
103-0733Gasket, Gearcase Backplate1Gasket Amazon eBay
103-0746Gearcase (Includes Oil Seal and Oil Fill Tube)Seal Amazon eBay
110-1718Head, Cylinder Gasket, Cylinder Head2Gasket Amazon eBay
110-2987Gasket, Cylinder Head2Gasket Amazon eBay
110-3225Gasket, Cylinder Head1Gasket Amazon eBay
12 050 01Oil Filter1Oil filter Amazon eBay $19.06 KuduParts $11.00 FridayParts $33.98
12 050 01-SFilter, oil1Oil filter Amazon eBay $19.06 KuduParts $32.00 FridayParts $33.98
12 132 02-SSpark Plug1Spark plug buy
120-0491Pump, Oil1Pump Amazon eBay $30.00
120-1041Bearing, Oil Pump Idler Gear (Semi Finished)1Pump Amazon eBay
130-07558racket, Mounting Heater, Tank - 850 Watt, 115 Volt (Includes Hose Connector, Cord and Mounting Strap)1Hose Amazon eBay
130-2500Guard, Belt (Left Side)1Belt Amazon eBay
134-1437Spring - Injecion Pump Lever1Pump Amazon eBay
140-1787Hood, Air Cleaner1Air filter Amazon eBay
140-1791Indicator Service1Sensor Amazon eBay
140-1841Cleaner. Air (Includes Element)1Air filter Amazon eBay $50.00
140-2174Cleaner, Air - Oil Bath Band. Mount ing1 2Air filter Amazon eBay
140-2234Tube. Air InletHose Amazon eBay
141-0982Gasket2Gasket Amazon eBay
141-0983Gasket, Carburetor1Gasket Amazon eBay
147-0436Seal, Injector6Seal Amazon eBay
147-0465-12Pump, Fuel Injection (See Separate Page for Components)1Pump Amazon eBay
147-0701Injector, Fuel (Includes Seal)6Seal Amazon eBay
147-0856Injector, Fuel (Includes Parts Marked #)2Injector Amazon eBay FridayParts $72.02
147-0864#O'Ring, Injector2Injector Amazon eBay
147-0865#O'Ring, Injector2Injector Amazon eBay
147-2715Remote Fuel Pump Kit EFI (HGJAA)1Fuel pump Amazon eBay
149-1445Filter1Fuel filter Amazon eBay $19.95
149-1446Gasket, Cover1Gasket Amazon eBay
149-1828Pump, Fuel (Electric)1Pump Amazon eBay $39.59 FridayParts $40.41
149-1914-04Element, Filter (Includes O-fling Seal) (2 M~CPXI)1Seal Amazon eBay
149-1920Plate, Mounting - Fuel Filter Elbow, Hose - Male1Fuel filter Amazon eBay
149-1921Plate, Mounting - Fuel Filter Elbow, Hose - Male1Fuel filter Amazon eBay
149-1922Spacer, Mounting - Fuel Filter1Fuel filter Amazon eBay
149-1949Head Assembly. Replacement (Includes Vent Plug. O-Ring Seals. Pump Assembly and Tube) Seal)1Seal Amazon eBay
149-1953Drain Assy (Includes Knob and Seal)1Seal Amazon eBay
149-2100Filter Assembly, Fuel Element. Filter1Fuel filter Amazon eBay
149-2106Element1Fuel filter Amazon eBay $34.99 NAPA $61.61 KuduParts $68.00
149A159Gasket - Spacer - BLAKING mfr. pump only2Gasket Amazon eBay
149A551Lever, Hand Primer - ONAN mfr. pump only1Pump Amazon eBay
149D693Pump, Fuel - ONAN mfr., with primer lever - Replaces earlier atyle pumps used, of any manufacture1Pump Amazon eBay
149K526Repair Kit, Fuel Pump1Fuel pump Amazon eBay
149K74Repair Kit, Fuel Pump - Includes parts marked (* anda) - For AC mfr., BLAKING mfr. or ONAN mfr. pumps1Fuel pump Amazon eBay
151-0437Kit, Throttle Modification (Fuel Injection Pump)1Fuel pump Amazon eBay
1512-0154Belt Fan1Belt Amazon eBay
154-3067-02Manifold Assy, Intake (Includes Hose Connector)1Hose Amazon eBay
154-3085Gasket, Intake Manifold2Gasket Amazon eBay
154P570Union, Manifold Flange2Exhaust Amazon eBay
155-2073Gasket, Exhaust Pipe1Gasket Amazon eBay
155-2415Seal, Muffler Support18Seal Amazon eBay
155-2619Spec D, Exhaust Manifold) *Gasket. Elbow - Exhaust (WC 0)1Gasket Amazon eBay
15SA47Tube, Flexible Exhaust2Exhaust Amazon eBay
165-2203Gasket, Manifold - Exhaust (&xx A-C):Gasket Amazon eBay
167-0272Spark plug2Spark plug Amazon eBay
168-0174Kit, Gasket - Valve Grind1Gasket Amazon eBay
185-2175Gasket1Gasket Amazon eBay
185-2199Band, Mounting - Air Cleaner1Air filter Amazon eBay
185-2203Gasket, Manifold - Exhaust (&xx A-C)1Gasket Amazon eBay
185-2239Clamp, Hose1Hose Amazon eBay
185-2240Clamp, Hose2Hose Amazon eBay
185-2266Alternator (12 VDC) (See Separate Page for Components)1Alternator Amazon eBay
185-2284Gasket2Gasket Amazon eBay
185-2300Clamp, Hose1Hose Amazon eBay
185-2311Housing, Thermostat1Thermostat Amazon eBay FridayParts $27.75
185-2421Hose, Rubber - Overflow1Hose Amazon eBay
187-6224Gasket, Rocker Cover1Gasket Amazon eBay
187-6230Gasket, Cylinder Head (1)1Gasket Amazon eBay
187-6238Gasket, Breather Plate1Gasket Amazon eBay
191-1368Arm, Alternator Adjusting1Alternator Amazon eBay
191-1872Alternator (12 VDC) (Gl)1Alternator Amazon eBay
191-1983-01Alternator1Alternator Amazon eBay
191-2085Strap, Alternator Adjust1Alternator Amazon eBay
193-0247'Sender, Temperature - Engine Coolant1Sensor Amazon eBay
193-0469Sensor, Map1Sensor Amazon eBay
193-0480Sensor, Manifold Air Temperature1Sensor Amazon eBay
24 032 19-SSeal, oil front1Seal FridayParts $10.99
24 050 01-SFilter, breather8Filter buy
24 083 02Precleaner element1Air filter buy
24 083 02-SPrecleaner8Air filter buy
24 083 05-SPrecleaner8Air filter buy
24 083 08Air cleaner element1Air filter buy
24 083 08-SElement, air filter1Air filter buy
24 083 09-SElement, air filter1Air filter buy
24 153 01-SO-ring1Seal buy
24 153 08-SO-ring1Seal buy
24 153 21-SO-ring, oil cooler1Seal buy
24 393 51-SKit, oil pump assembly (includes items 12, 13)1Pump buy
24 590 01-AOil Cooler, 14RCA/LOil cooler buy
24 590 27DipstickOil dipstick buy
24 590 29Oil Fill1Oil fill buy
241927Sensor, speed1Sensor Amazon eBay $75.00
25 032 06-SSeal, oil1Seal FridayParts $11.90
25 099 26-SSwitch, oil pressure1Sensor buy
25 132 14-SSpark plug2Spark plug buy
25 158 08-SBushing, linkage retaining4Bushing buy
25 435 06-SKit, starter solenoid1Kit buy
269373Alternator Assembly1Alternator Amazon eBay
300-2880Board, Voltage Regulator (VR21)1Avr Amazon eBay FridayParts $350.50
300-2906Board Assy, Printed Circuit - Over/Under Volt Sensor (A17)iSensor Amazon eBay
302-0750'Sender, Tachometer1Sensor Amazon eBay
304A66Resistor, 4xELI1Resistor Amazon eBay
305-0491REGULATOR. 305-04911Avr Amazon eBay
305-0901Sensor, Low Battery Voltage1Sensor Amazon eBay
307-1061Relay, Starter Protection1Starter Amazon eBay
307P820Relay, Adjustabe Start Disconnect & Crankshaft Limiter1Relay Amazon eBay
309-0178Switch, High Water Temperature Top Mounted On Water Outlet Housing1Sensor Amazon eBay $350.00
309-0179Switch, High Water Temperature (Standard Part) Side Mounted On Water Outlet Housing1Sensor Amazon eBay
309-0269Sender, Temperature-Lo Engine1Sensor Amazon eBay $239.00
322-17Bulb, (2) Panel ( I ) Pilot2Lamp Amazon eBay
322P69Bracket, Mounting - Engine1Bracket Amazon eBay
323-1591# Plug, Seal (E1)1Seal Amazon eBay
323-1708# Seal, Cable (P8)4Seal Amazon eBay
332AI006Block, Terminal1Block Amazon eBay
332AI009Block, Terminal1Block Amazon eBay
3580723/8"-16 UNC-2A THD Thrubolt1Bolt Amazon eBay
420A248Air filter1Air filter Amazon Amazon eBay eBay
501-022545' Lg - With Both Ends 1/8' NPT Male Fittings1Belt Amazon eBay
501-0227Line, Fuel - Flexible (24' La x 1/8' NPT Male x-1/8° NPT Male)1Hose Amazon eBay
502-0068Tee (3/8' x 5/8' x 5/8') to1Hose Amazon eBay
502-0313Elbow, Hose − 90° (1/8” Pipe to 1/4” Hose)1Hose Amazon eBay
502-0433[;b'$P&x 5/16 ID Hose]1Hose Amazon eBay
502-0613Connector, Hose1Hose Amazon eBay
502-0869Connector (3/8')1Hose Amazon eBay
502-0870Tee, Hose1Hose Amazon eBay
502-1314Connector, Hose1Hose Amazon eBay
503-0183Clamp, Hose1Hose Amazon eBay
503-0365Clamp, Hose1Hose Amazon eBay
503-0594Hose, Rubber - Preformed1Hose Amazon eBay
503-059bHose, Rubber - Preformed1Hose Amazon eBay
503-0685Clamp, Hose1Hose Amazon eBay $15.00
503-1058Spacer, Fan Hose, Radiator - Upper1Hose Amazon eBay
503-1062Hose - Intake Manifold Water Pump (3/8' ID)1Hose Amazon eBay
503-1074Hose Reducer1Hose Amazon eBay
503-1084Elbow. ReducerHose Amazon eBay
503-1250Hose, Water Bypass (5/8' Ill)1Hose Amazon eBay
503-1251Hose, Water Bypass (5/8' 10]1Hose Amazon eBay
503-1450Hose, Cleaner - Air1Hose Amazon eBay
503-1552-01Ho!M? (5/8' ID X 14')2Hose Amazon eBay
503-2126Hose, Vacuum1Hose Amazon eBay
503-365Clamp, Hose2Hose Amazon eBay
505-0180Plug, Pipe (1-1/4"), Air Cleaner Adapter and Intake Manifold1Air filter Amazon eBay
505-382Nipple, Exhaust(3"x 2-5/8")2Exhaust Amazon eBay
505-4Hose (Order 6 “of Bulk Hose Number 503-324)I 9Hose Amazon Amazon eBay eBay
509-0125Key, Handle - Screw, Lock (3/8 - 16 x .75")1Seal Amazon eBay
509-0191Seal, Oil (Includes Wear S1eeve )1Seal Amazon eBay
509-0196O'Ring1Seal Amazon eBay
511-0112Belt, Fan1Belt Amazon eBay
515-0094Key, Crankshaft Woodruff Belt1Belt Amazon eBay
52 099 08-SSwitch, oil pressure1Sensor buy
520-2403Stud, Injection Pump (M8)3Pump Amazon eBay
718-1069Fan Pldl@y Sell. Vee Smwv, Cap Hex Head (M8 X I 25 X 25]1Belt Amazon eBay
750-1004Nut, Hex (M6 x 1) Washer, Lock - Spring (M6) Adapter, Hose Hose, Rubber - Preformed1Hose Amazon eBay
ADV-6823-AAir Filter, Spark Plug Location1Air filter Amazon eBay
BKR-8YU11Spark Plug, CH20/CH7404Spark plug Amazon eBay
GM102176Oil pressure sensor boot1Sensor Amazon eBay
GM103743Emergency Stop Switch (optional)1Emergency stop switch Amazon eBay $59.99
GM111084Shutdown Switch1Shutdown switch Amazon eBay
GM20990Gasket4Gasket Amazon eBay
GM28823Sensor, oil temperature1Sensor Amazon eBay $50.00
GM28981UEGO sensor interface harnessSensor eBay
GM29253-GA2Controller Wiring Diagram1Controller wiring diagram Amazon eBay
GM29358-BPoint-to-Point Wiring Diagram, Single Phase1Point-to-point wiring diagram Amazon eBay
GM29385UEGO oxygen sensor service kitSensor eBay
GM515593/8"-16 UNC-2A THD Thrubolt1Thrubolt Amazon eBay
GM80980Brush(es)1Brush Amazon eBay
GM90969-KP1-QS3" Concrete Mounting Pad (only comes in quantities of 5)Physical Amazon eBay
GM90969-KP2-QS4" Concrete Mounting Pad (only comes in quantities of 5)Physical Amazon eBay
GM92228-KP1-QS3" Concrete Mounting Pad (only comes in quantities of 5)Physical Amazon eBay
GM92228-KP2-QS4" Concrete Mounting Pad (only comes in quantities of 5)Physical Amazon eBay
KO3226Electric Starter Service Kit1Battery Amazon eBay
RSP-FT-02-US-91Pack first: complete service kit comprising air filter, air pre filter, spark plugs and oil filter.Air filter Amazon eBay
RSP-FT-04-US-91Pack first: complete service kit comprising air filter, air pre filter, spark plugs and oil filter.Air filter Amazon eBay
X-6422-31SealSeal eBay
098-7130Label, Warning Heat1Service part / kit Amazon eBay
098-7369-01HDCAC2Service part / kit Amazon eBay
098-7374Label, Warning1Service part / kit Amazon eBay
098-7375Label, Switch1Service part / kit Amazon eBay
098-7376Label, Circuit Breaker1Service part / kit Amazon eBay
098-7398-01HDCAA2Service part / kit Amazon eBay
098-7398-02HDCAB2Service part / kit Amazon eBay
098-7399-0145A, 2 Pole1Service part / kit Amazon eBay
098-7399-0250A, 2 Pole1Service part / kit Amazon eBay
098-7461Label, Warning Hazardous Voltage1Service part / kit Amazon eBay
098-7462Label, Service Information Label, Model Ident1Service part / kit Amazon eBay
098-7463Label, Fuel Attachment1Service part / kit Amazon eBay
098-7464Label, Coolant Drain1Service part / kit Amazon eBay
098-7465-03Label, Control Face1Service part / kit Amazon eBay
098-7466Label, Control Rear1Service part / kit Amazon eBay
098-7497-01Label, Warning Install1Service part / kit Amazon eBay
098-7498-01Label, Warning Hazardous1Service part / kit Amazon eBay
098-7515-01Label, Warning Voltage1Service part / kit Amazon eBay
1-24-67Crankshaft1Service part / kit Amazon eBay
10-24-658Air Intake1Service part / kit Amazon eBay
101-0439Plate, Rear Bearing Bearing, Crankshaft1Service part / kit Amazon eBay NAPA $95.66
102-0778Adapter, Pipe - Oil Drain1Service part / kit Amazon eBay
104-0032Gear, Crankshaft1Service part / kit Amazon eBay NAPA $260.36
104-0091Washer, Flat (Special)4Service part / kit Amazon eBay
104-1953Washer, Flat (1/2' ID x 2.25' OD)1Service part / kit Amazon eBay
104-1958Marked *) Spec A/B Begin Spec C *Pulley Assy, Drive (Includes1Service part / kit Amazon eBay
104-2000Marked *) Spec A/B Begin Spec C *Pulley Assy, Drive (Includes1Service part / kit Amazon eBay
105-0058Plunger, Camshaft1Service part / kit Amazon eBay
105-0059Spring, Plunger1Service part / kit Amazon eBay
105-0508Shaft, Idler Gear1Service part / kit Amazon eBay
105-0513Gear, Idler (Includes Finished 8earing)1Service part / kit Amazon eBay
105-05198earing, Idler Gear (Semi Finished)1Service part / kit Amazon eBay
105-0541Washer, Thrust1Service part / kit Amazon eBay
105-0641Gear (Includes Spacer and Plate)1Service part / kit Amazon eBay
105-0676Camshaft1Service part / kit Amazon eBay
10S-2283Cap1Service part / kit Amazon eBay
11-24-3Exhaust1Service part / kit Amazon eBay
110-0904Rotocap, Exhaust2Service part / kit Amazon eBay NAPA $116.06 FridayParts $124.86
110-1719Valve, Exhaust2Service part / kit Amazon eBay
110-2181-03.50 MM Oversize6Service part / kit Amazon eBay
110-2781-01Standard6Service part / kit Amazon eBay
110-2781-02.25 MM Oversize6Service part / kit Amazon eBay
110-3045Standard1Service part / kit Amazon eBay FridayParts $124.86
110-3226-01Standard6Service part / kit Amazon eBay
110-3226-02.25 MM Oversize6Service part / kit Amazon eBay
110-3226-03.50 MM Oversize6Service part / kit Amazon eBay
110-3245Cap, Valve Stem (Not used on some early models)1:Service part / kit Amazon eBay
110-3462Valve, Exhaust Valve2Service part / kit Amazon eBay
110-3462-01Oversize2Service part / kit Amazon eBay
110-3462-02.005' Oversize2Service part / kit Amazon eBay
110-3462-03.010' Oversize2Service part / kit Amazon eBay
110-3462-04.025' Oversize Seat, Intake Valve2Service part / kit Amazon eBay
110-34900.5 MM OversizeService part / kit Amazon eBay
110-3655.005' Oversize2Service part / kit Amazon eBay
110-3655-05Piston Ring Standard .005 Oversize24Service part / kit Amazon eBay
110-3655-10.010' Oversize2Service part / kit Amazon eBay
112-0265Piston (Includes Pin, Rings and Retaining Rings) Oversize Oversize Oversize Oversize2Service part / kit Amazon eBay
112-0265-01Standard Oversize2Service part / kit Amazon eBay
112-0265-02Standard Oversize2Service part / kit Amazon eBay
112-0265-03Standard Oversize2Service part / kit Amazon eBay
112-0265-05Standard Oversize2Service part / kit Amazon eBay
112-0267Standard Oversize2Service part / kit Amazon eBay
112-0268Pin, Piston Ring, Retaining2Service part / kit Amazon eBay
113-0311Standard Oversize Oversize2Service part / kit Amazon eBay
113-0311-01.010 Oversize2Service part / kit Amazon eBay
113-0311-02.020 Oversize2Service part / kit Amazon eBay
113-0311-03.030 Oversize2Service part / kit Amazon eBay
113-0311-05Standard2Service part / kit Amazon eBay
114-0036Bushing, Bearing, Connecting Rod2Service part / kit Amazon eBay
114-0188Standard4Service part / kit Amazon eBay $29.95
114-0188-02.002' Undersize .010' Undersize4Service part / kit Amazon eBay
114-0188-10.010' Undersize .020' Unders0size4Service part / kit Amazon eBay
114-0188-20.020' Undersize4Service part / kit Amazon eBay
114-0203Rod, Connecting (Includes Bolt and Bushing)2Service part / kit Amazon eBay
115-0202Ball, Rocker Arm1:Service part / kit Amazon eBay
115-0204Short6Service 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 — E-2196 Command Pro 19-27 116609 (Kohler)Engine spec — REHLKO Gasoline Full line (Kohler)Reference — Gasoline Full line (Kohler)Owner's manual — 2459001 b 808 (Kohler)Owner's manual — 24 590 29 EN (Kohler)Owner's manual — 24 590 43 EN (Kohler)Owner's manual — 24 590 48 EN (Kohler)Owner's manual — 24 590 54 FRC (Kohler)Owner's manual — Owner's Manual CH18-26 (Kohler)Service manual — 24 690 06 (Kohler)Service manual — 24 690 06 EN (Kohler)Service manual — 24 690 30 EN (Kohler)Service manual — 24 690 35 ESS (Kohler)Service manual — CH Twin (Kohler)Service manual — Kohler PA-CH740 Engine Owners - Service Manual (Kohler)Service manual — Kohler PA-CH740-3362 Engine Service Manual (Kohler)Service manual — Kohler-CH-Series-Service-Manual (Kohler)Service manual — Kohler-Service-Repair-Manual-Command-CH18-CH20-CH22-CH23-CH25-CH26 (Kohler)Service manual — Kohler-Study-Guide (Kohler)Service manual — sm 24 690 06 (Kohler)Service manual — tp2428c (Kohler)

This page was generated from the 21 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.