CH18-CH26, CH620-CH750OWNER'S MANUALHORIZONTAL CRANKSHAFTCOMMAND
10Oil FilterOil Drain PlugOil CoolerReplace the oil filter as follows:1. Drain the oil from the engine crankcase.2. Allow the oil filter to drain.3. B
11Figure 11. Air Cleaner System Components.Check the air cleaner daily or before starting theengine. Check for a buildup of dirt and debris aroundthe
12MainElementInnerElementDustEjectorValve2. Pull the air cleaner element out of the housing.See Figure 12.Service Paper ElementEvery 100 hours of oper
13Figure 14. Servicing Spark Plug.4. Reinstall the spark plug into the cylinder head.Torque the spark plug to 24.4-29.8 N·m(18-22 ft. lb.).Battery Cha
14Carburetor Troubleshooting andAdjustmentsEngines in this series use either a one- or two-barrelcarburetor depending on model, and may also beequipp
15The system requires an additional procedure forsetting the idle speed. If speed adjustments arerequired proceed as follows.1. Make any necessary spe
16Figure 20. Keihin Two-Barrel Carburetor.Low Idle Speed (RPM) Adjustment1. Low Idle Speed (RPM) Setting: Place the throttlecontrol into the idle or s
17TroubleshootingIf the MIL comes on, or the engine becomes hard tostart, runs roughly, or stalls at low idle speed, initialchecks should be made in t
18SpecificationsModel: ... CH18/CH620... CH20/CH640... CH23/
19LIMITED 2 YEAR COMMAND ENGINE WARRANTYKohler Co. warrants to the original consumer that each new COMMAND engine sold by Kohler Co. will be free from
2Explosive Fuel can cause fires andsevere burns.Do not fill the fuel tank while theengine is hot or running.WARNINGExplosive Fuel!Gasoline is extremel
(c) For warranty repairs, the engine must be presented to a Kohler Co. service center as soon as a problem exists. Call 1-800-544-2444 or accessour we
3Safety Precautions (Cont.)Accidental Starts can cause severeinjury or death.Disconnect and ground spark plugleads before servicing.WARNINGCarbon Mono
4Figure 1. Typical Command Horizontal Shaft Carbureted Engine.Figure 2. Typical Command Horizontal Shaft EFI Engine.Air CleanerOil FillRectifier-Regul
5Refer to Maintenance Instructions beginning onpage 8 for detailed oil check, oil change, and oil filterchange procedures.Fuel RecommendationsWARNING:
6Engine Identification NumbersWhen ordering parts, or in any communicationinvolving an engine, always give the Model,Specification, and Serial Numbers
7• Check that any clutches or transmissions aredisengaged or placed in neutral. This is especiallyimportant on equipment with hydrostatic drive. Thesh
8CoolingNOTE: If debris builds up on the grass screen orother cooling air intake areas, stop the engineimmediately and clean. Operating the enginewith
9• Replace fuel filter1 (EFI engines).Daily or BeforeStarting EngineMaintenance RequiredFrequency• Fill fuel tank.• Check oil level.• Check air cleane
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