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Kohler CV620 Generator Set

Kohler CV620 generator set: . Specifications, engine details, filters, oil capacity and 3 document types.

3
Document types

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Specifications

Ratings spec sheet not in our library yet — see the documents below.

Filters & service parts

model family
ItemSpecCapacityPart #Interval
Air filter—720 hr
Fuel filter—2500 hr
Oil filter—2500 hr
Battery—
Belt—
Coolant—
Coolant filter—
OilKohler oils recommended; API service class SJ or higher acceptable1.6 L—500 hr
Spark plugClean out spark plug recess. Remove plug and replace.—5000 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

30
ItemActionHoursMonthsNotes
Low-profile precleanerChange25 hr12 moService/replace; or Annually
Low-profile precleanerReplace25 hr12 moService/replace; more frequently under severe, dusty, dirty conditions
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 areasClean100 hr12 moRemove cooling shrouds and clean cooling areas
Cooling shrouds and cooling areasClean100 hr12 moRemove 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
Low-profile air cleaner elementReplace100 hr12 moor Annually
OilChange100 hr12 moor Annually
Oil cooler finsClean100 hr12 moCheck oil cooler fins, clean as necessary (if equipped)
oil cooler finsCheck100 hr12 moClean as necessary; if equipped
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
Heavy-duty air cleaner elementReplace250 hrCheck inner element
Heavy-duty inner air cleaner elementCheck250 hr
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
Engine oil and oil filterChange300 hrOption only if using KOHLER PRO oil and PRO filter
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 hrEvery 500 hours
Rainure du vilebrequinLubricate500 hrToutes les 500 heures²; confiez ces travaux à un concessionnaire agréé Kohler
Spark plugsReplace500 hrSet gap to 0.76 mm (0.030 in.)
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
ClearanceCamshaft Bearing Surface O.D. Max. Wear Limit19.959 mm (0.7858 in.)mm
ClearanceCamshaft Bearing Surface O.D. New19.962/19.975 mm (0.7859/0.7864 in.)mm
ClearanceCamshaft Bore I.D. Max. Wear Limit20.038 mm (0.7889 in.)mm
ClearanceCamshaft Bore I.D. New20.000/20.025 mm (0.7874/0.7884 in.)mm
ClearanceCamshaft End Play (with shim)0.076/0.127 mm (0.0030/0.0050 in.)mm
ClearanceCamshaft End Play with shim0.076/0.127mmwith shim
ClearanceCamshaft Running Clearance0.025/0.063mm
ClearanceCamshaft Running Clearance0.025/0.063 mm (0.0010/0.0025 in.)mm
ClearanceCamshaft end play (w/shim)0.076/0.127mm (0.0030/0.0050 in.)
ClearanceConnecting Rod Journal Max. Out-of-Round0.025 mm (0.0010 in.)mm
ClearanceConnecting Rod Journal Max. Taper0.018 mm (0.0007 in.)mm
ClearanceConnecting Rod Journal O.D. - Max. Wear Limit35.94 mm (1.415 in.)mm
ClearanceConnecting Rod Journal O.D. - New35.955/35.973 mm (1.4156/1.4163 in.)mm
ClearanceConnecting Rod-to-Crankpin Running Clearance - Max. Wear Limit0.070 mm (0.0028 in.)mm
ClearanceConnecting Rod-to-Crankpin Running Clearance - New0.030/0.055 mm (0.0012/0.0022 in.)mm
ClearanceConnecting Rod-to-Crankpin Running Clearance Max. Wear Limit0.070 mm (0.0028 in.)mm
ClearanceConnecting Rod-to-Crankpin Running Clearance New0.030/0.055mmMax wear limit 0.070 mm
ClearanceConnecting Rod-to-Crankpin Running Clearance New0.030/0.055 mm (0.0012/0.0022 in.)mm
ClearanceConnecting Rod-to-Crankpin Side Clearance0.26/0.63mm
ClearanceConnecting Rod-to-Crankpin Side Clearance0.26/0.63 mm (0.0102/0.0248 in.)mm
ClearanceConnecting Rod-to-Piston Pin Running Clearance0.015/0.028 mm (0.0006/0.0011 in.)mm
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
ClearanceCrankcase Governor Cross Shaft Bore I.D., 6 mm Shaft Max. Wear Limit6.063 mm (0.2387 in.)mm
ClearanceCrankcase Governor Cross Shaft Bore I.D., 6 mm Shaft New6.025/6.050 mm (0.2372/0.2382 in.)mm
ClearanceCrankcase Governor Cross Shaft Bore I.D., 8 mm Shaft Max. Wear Limit8.088 mm (0.3184 in.)mm
ClearanceCrankcase Governor Cross Shaft Bore I.D., 8 mm Shaft New8.025/8.075 mm (0.3159/0.3179 in.)mm
ClearanceCrankcase Vacuumminimum of 10.2 cm (4 in.) of watercmno-load high speed
ClearanceCrankshaft Bore (in crankcase) Max. Wear Limit41.016 mm (1.6148 in.)mm
ClearanceCrankshaft Bore (in crankcase) New40.965/41.003 mm (1.6128/1.6143 in.)mm
ClearanceCrankshaft Bore (in oil pan) New40.987/40.974 mm (1.6136/1.6131 in.)mm
ClearanceCrankshaft Bore (in oil pan)-to-Crankshaft Running Clearance - New0.039/0.074 mm (0.0015/0.0029 in.)mm
ClearanceCrankshaft End Play (free)0.070/0.590 mm (0.0028/0.0230 in.)mm
ClearanceCrankshaft End Play free0.070/0.590mm
ClearanceCrankshaft end play (free)0.070/0.590mm (0.0028/0.0230 in.)
ClearanceCrankshaft end play (w/thrust bearing components)0.070/1.190mm (0.0028/0.0468 in.)with thrust bearing components
ClearanceCrankshaft to Sleeve Bearing (crankcase) Running Clearance - New0.03/0.09 mm (0.0012/0.0035 in.)mm
ClearanceCylinder Bore I.D. Max. Wear Limit73.070 mm (2.8757 in.)mm
ClearanceCylinder Bore I.D. Max. Wear Limit77.063 mm (3.0340 in.)mm
ClearanceCylinder Bore I.D. Max. Wear Limit80.065 mm (3.1522 in.)mm
ClearanceCylinder Bore I.D. Max. Wear Limit83.051 mm (3.2697 in.)mm
ClearanceCylinder Bore I.D. New73.006/73.031 mm (2.8742/2.8752 in.)mm
ClearanceCylinder Bore I.D. New77.000/77.025 mm (3.0315/3.0325 in.)mm
ClearanceCylinder Bore I.D. New80.000/80.025 mm (3.1496/3.1506 in.)mm
ClearanceCylinder Bore I.D. New82.988/83.013 mm (3.2672/3.2682 in.)mm
ClearanceCylinder Head Max Out-of-Flatness0.076mm73, 77, and 80 mm bores; 0.1 mm for 83 mm bore
ClearanceCylinder Head Max. Out-of-Flatness0.076 mm (0.003 in.) for 73, 77, and 80 mm bores; 0.1 mm (0.004 in.) for 83 mm boremm
ClearanceCylinder Head Max. Out-of-Flatness (73, 77 and 80 mm bores)0.076 mm (0.003 in.)mm
ClearanceCylinder Head Max. Out-of-Flatness (83 mm bore)0.1 mm (0.004 in.)mm
ClearanceExhaust Valve Guide I.D. Max. Wear Limit7.159 mm (0.2819 in.)mm
ClearanceExhaust Valve Guide I.D. New7.038/7.058 mm (0.2771/0.2779 in.)mm
ClearanceExhaust Valve Minimum Lift8.07 mm (0.3177 in.)mm
ClearanceExhaust Valve Stem-to-Valve Guide Running Clearance0.050/0.088 mm (0.0020/0.0035 in.)mm
ClearanceExhaust valve minimum lift8.07mm (0.3177 in.)
ClearanceExhaust valve stem-to-guide running clearance0.050/0.088mm (0.0020/0.0035 in.)
ClearanceFlywheel End Main Bearing Journal Max. Out-of-Round0.025 mm (0.0010 in.)mm
ClearanceFlywheel End Main Bearing Journal Max. Taper0.022 mm (0.0009 in.)mm
ClearanceFlywheel End Main Bearing Journal O.D. - Max. Wear Limit40.84 mm (1.608 in.)mm
ClearanceFlywheel End Main Bearing Journal O.D. - New40.913/40.935 mm (1.6107/1.6116 in.)mm
ClearanceGovernor Cross Shaft O.D., 6 mm Shaft Max. Wear Limit5.962 mm (0.2347 in.)mm

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-30Voir tableau de viscosité.
Engine oil5W-30Voir tableau de viscosité.
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 PRO 10W-50 Synthetic OilAPI service class SJ or higher1.6 LAll-season ideal; 300-Hour oil/filter change when paired with KOHLER PRO Extended Life Oil Filter
Engine oilKohler oils recommended; other high-quality detergent oils (including synthetic) of API service class SJ or higherAPI SJ or higher1.6 LSelect viscosity based on air temperature at time of operation per table; Oil Capacity (refill) 1.6-1.8 L (1.7-1.9 U.S. qt.)
Engine oilKohler oils recommended; other high-quality detergent oils (including synthetic) of API service class SJ or higher acceptableAPI service class SJ or higher1.6 LOil capacity (refill) 1.6-1.8 L (1.7-1.9 U.S. qt.). Select viscosity based on air temperature at time of operation.
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 10 oil (light coating for rust prevention after cylinder head cleaning)Apply light coating of SAE 10 oil to cylinder head after drying to prevent rusting.
Engine oilSAE 30Voir tableau de viscosité.
FuelClean, fresh, unleaded gasolineOctane rating 87 (R+M)/2 or higher; RON 90 minimum; gasoline up to 10% ethyl alcohol; MTBE max 15% by volumeE15, E20 and E85 are NOT approved; do not use gasoline older than 30 days; do not add oil to gasoline
FuelClean, fresh, unleaded gasoline; Octane rating of 87 (R+M)/2 or higher; RON 90 octane minimum; up to 10% ethyl alcohol, 90% unleaded acceptable; MTBE max 15% by volumeE15, E20 and E85 are NOT approved; do not use gasoline older than 30 days; do not add oil to gasoline
FuelClean, fresh, unleaded gasoline; octane rating 87 (R+M)/2 or higher; RON 90 minimum; gasoline up to 10% ethyl alcohol; MTBE max 15% by volume approvedE15, E20, E85 NOT approved; do not use gasoline older than 30 days; do not add oil to gasoline
FuelClean, fresh, unleaded gasoline; octane rating 87 (R+M)/2 or higher; Research Octane Number (RON) 90 minimumGasoline up to 10% ethyl alcohol, 90% unleaded acceptable; MTBE and unleaded gasoline blend (max 15% MTBE by volume) approvedE15, E20 and E85 are NOT approved. Do not add oil to gasoline. Do not use gasoline older than 30 days. Do not overfill fuel tank.
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.
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

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 Ignition Module Air Gap adjustment

⚠ Do not attempt to set air gap with a business card or folded microfiche card.

Tools: Feeler gauge 0.30 mm (0.012 in.)

  1. Turn flywheel magnet away from module position.
  2. Attach module to mounting legs, pull away from flywheel, 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, retighten screws.
  6. Rotate flywheel to remove feeler gauge, recheck specified gap under each leg; torque module screws to 4.0 N·m (35 in. lb.).
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.
Governed Idle Speed Adjustment (If equipped) adjustment

Tools: Tachometer

  1. Hold governor lever away from carburetor so throttle lever is against idle speed screw; start and warm engine, adjust screw to approximately 1200 RPM.
  2. Release governor lever; turn governed idle adjustment screw to obtain manufacturer's recommended idle speed (1500-1800 RPM).
  3. Move throttle lever to wide-open/full throttle and 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, Long thin rod or tool

  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 Initial Adjustment Procedure adjustment

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

Tools: Long thin rod or tool

  1. Make sure throttle linkage is connected to governor arm and throttle lever.
  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.
  4. Insert a long thin rod 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 lever pivot point.
  2. To decrease sensitivity, move spring away from governor lever pivot point.
Ignition Module Air Gap Adjustment adjustment

Tools: Feeler gauge 0.30 mm (0.012 in.)

  1. Turn flywheel magnet away from module.
  2. Attach module loosely to mounting legs.
  3. Rotate flywheel so magnet centered under module.
  4. Place 0.30 mm (0.012 in.) feeler gauge between magnet and all three legs.
  5. Loosen screws; let magnet pull module against gauge; retighten.
  6. Torque screws to 4.0 N·m (35 in. lb.); recheck gap.
Low Idle Fuel Adjustment adjustment

⚠ Engines will have fixed low idle or limiter caps; do not attempt to remove limiter caps.

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

Tools: Tachometer

  1. Make adjustment only after engine has warmed up.
  2. Place throttle control into idle or slow position.
  3. Turn low idle speed adjusting screw in or out to obtain 1200 RPM (± 75 RPM).
Compression Test (Command Twins) diagnostic

Tools: Compression gauge

  1. Perform on a warm engine. Clean dirt away from base of spark plug(s).
  2. Be sure choke is off and throttle is wide open during test.
  3. Compression should be at least 160 psi and should not vary more than 15% between cylinders.
Crankcase Vacuum Test diagnostic

⚠ Rotating Parts can cause severe injury. Stay away while engine is in operation.

Tools: Water manometer or vacuum/pressure gauge

  1. Insert rubber stopper into oil fill hole with pinch clamp installed; connect hose between stopper and manometer tube; leave other tube open; water level at 0 line; pinch clamp closed.
  2. Start engine and run no-load high speed.
  3. Open clamp and note water level; engine side should be minimum 10.2 cm (4 in.) above open side.
  4. Close pinch clamp before stopping engine.
Crankcase Vacuum Test (Manometer) diagnostic

⚠ Carbon Monoxide can cause severe nausea, fainting or death.

Tools: Water manometer, Rubber stopper, Pinch clamp

  1. Insert stopper into oil fill hole; connect hose to manometer.
  2. Start engine and run at no-load high speed.
  3. Open clamp; engine-side level must be at least 10.2 cm (4 in.) above open side.
  4. Close pinch clamp before stopping engine.

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

Parts

54model family
Part #DescriptionQtySystem
24 584 03Ignition Module1Ignition module FridayParts $20.49
24 584 11-SIgnition Module (1 11/16 in. High)1Ignition module FridayParts $20.49
24 584 15-SIgnition Module (2 1/16 in. High)1Ignition module FridayParts $20.49
24 590 27DipstickOil dipstick buy
24 590 43DipstickOil filter buy
25 357 01-SKohler Electric Starter Drive Lubricant (Inertia Drive)1Starter buy
25 357 02-SKohler Electric Starter Drive Lubricant (Solenoid Shift)1Starter buy
25 455 20-SHose Removal Tool, Dual Size/End1Hose buy
275.56Spark Plug1Spark plug buy
291.77Oil Filter Removal1Oil filter FridayParts $84.99
301.77Air Filter Cover Assembly Removal1Air filter FridayParts $339.99
334.19Oil Drain Plug1Oil filter buy
495.31Spark Plug1Spark plug buy
12 584 12Tester part for SAM (Part No. 12 584 12)Service part / kit buy
24 584 09SAM Part No. 24 584 09Service part / kit buy
24 584 10SAM Part No. 24 584 10Service part / kit buy
24 584 11Ignition Module (1 11/16 in. High)Service part / kit buy
24 584 18SAM Part No. 24 584 18Service part / kit buy
24 584 19SAM Part No. 24 584 19Service part / kit buy
24 584 27SAM Part No. 24 584 27Service part / kit buy
24 584 30SAM Part No. 24 584 30Service part / kit buy
24 584 31SAM Part No. 24 584 31Service part / kit buy
24 584 32SAM Part No. 24 584 32Service part / kit buy
24 584 33SAM Part No. 24 584 33Service part / kit buy
24 584 34SAM Part No. 24 584 34Service part / kit buy
24 584 36-SIgnition Module (2 1/16 in. High)1Service part / kit FridayParts $20.49
24 584 38SAM Part No. 24 584 38Service part / kit buy
24 584 39SAM Part No. 24 584 39Service part / kit buy
24 690 07Air cleaner elementService part / kit Amazon eBay
24 761 01-SEFI Service Kit1Service part / kit buy
24690-07Air Cleaner Cover1Service part / kit Amazon eBay
25 357 11-SDielectric Grease (GE/Novaguard G661)1Service part / kit buy
25 357 14-SCamshaft Lubricant (Valspar ZZ613)1Service part / kit buy
25 455 01-SIgnition System Tester1Service part / kit buy
25 455 11-SAlcohol Content Tester1Service part / kit buy
25 455 12-SValve Guide Reamer (K and M Series)1Service part / kit buy
25 597 07-SLoctite 5900 RTV silicone sealant1Service part / kit buy
25 761 01-SIgnition System Tester - For testing output on all systems, including CD1Service part / kit buy
25 761 05-SAdapter 12 mm x 14 mm1Service part / kit buy
25 761 06-SOil Pressure Test Kit1Service part / kit buy
25 761 23-SElectronic Fuel Injection (EFI) Diagnostic SoftwareService part / kit buy
25 761 38-SHydraulic Valve Lifter ToolService part / kit buy
25 761 39-SDealer Tool Kit (Domestic)1Service part / kit buy
25 761 40-SSpark Advance Module (SAM) Tester1Service part / kit buy
25 761 41-SRectifier-Regulator Tester (240 V AC/50Hz)1Service part / kit buy
25 761 42-SDealer Tool Kit (International)Service part / kit buy
28 761 01-STriad/OHC Timing Tool Set1Service part / kit buy
317.77Exhaust Port #11Service part / kit buy
377.59Engine Mounting Surface1Service part / kit buy
52 455 04-SOffset Wrench (K and M Series)Service part / kit buy
529.91Crankshaft1Service part / kit buy
DTI-731-03Adapter 12 mm x 14 mm (Required for leakdown test on XT-6 engines)Service part / kit Amazon eBay
DTI-K828For properly sizing valve guides after installation.Service part / kit Amazon eBay
DTI-K830For hand reaming using Kohler 25 455 12-S reamer.Service part / kit Amazon eBay

Compiled from this model's family documentation — may include parts for closely-related variants. 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)Owner's manual — 24 590 43 EN (Kohler)Owner's manual — 24 590 54 FRC (Kohler)Service manual — 24 690 07 EN (Kohler)Service manual — CV17-CV25, CV620-CV730, CV740, CV750 (Kohler)Service manual — Kohler PA-CH740 Engine Owners - Service Manual (Kohler)

This page was generated from the 6 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.