S M COMMAND PRO - kohlerengines.com

1 SERVICE MANUALHORIZONTAL CRANKSHAFTCOMMAND PROCH940-CH980 ContentsSection 1. Safety and General 2. Tools & Aids ..Section 3. Troubleshooting ..Section 4. Air Cleaner and Air Intake System ..Section 5. Fuel System and Governor ..Section 6. Lubrication System ..Section 7. Electrical System and 8. 9. Inspection and Reconditioning ..Section 10. 1 Safety and General Information1 Section 1 Safety and General InformationSafety PrecautionsTo ensure safe operation please read the following statements and understand their meaning. Alsorefer to your equipment manufacturer's manual for other important safety information.

2 This manualcontains safety precautions which are explained below. Please read is used to indicate the presence of a hazard that cancausesevere personal injury, death,or substantial property damage if the warning is is used to indicate the presence of a hazard that willorcancauseminorpersonal injury orproperty damage if the caution is is used to notify people of installation, operation, or maintenance information that is importantbut not Your Safety!These precautions should be followed at all times. Failure to follow these precautions could result in injury to yourselfand Parts can cause away while engine is Parts!

3 Keep hands, feet, hair, and clothing awayfrom all moving parts to prevent operate the engine with covers,shrouds, or guards Parts can cause severe not touch engine while operatingor just after Parts!Engine components can get extremelyhot from operation. To prevent severeburns, do not touch these areas while theengine is running - or immediately after itis turned off. Never operate the enginewith heat shields or guards Starts can cause severeinjury or and ground spark plugleads before Starts!Disabling engine. Accidental startingcan cause severe injury or working on the engine orequipment, disable the engine as follows:1) Disconnect the spark plug lead(s).

4 2) Disconnect negative (-) battery cablefrom 1 Safety and General InformationCarbon Monoxide can cause severenausea, fainting or inhaling exhaust fumes, andnever run the engine in a closedbuilding or confined Shock can cause not touch wires while engine Gas can cause fires andsevere acid battery only in a wellventilated area. Keep sources ofignition Exhaust Gases!Engine exhaust gases contain poisonouscarbon monoxide. Carbon monoxide isodorless, colorless, and can cause death ifinhaled. Avoid inhaling exhaust fumes,and never run the engine in a closedbuilding or confined Gas!

5 Batteries produce explosive hydrogen gaswhile being charged. To prevent a fire orexplosion, charge batteries only in wellventilated areas. Keep sparks, openflames, and other sources of ignitionaway from the battery at all times. Keepbatteries out of the reach of all jewelry when disconnecting the negative (-)ground cable, make sure all switches areOFF. If ON, a spark will occur at theground cable terminal which could causean explosion if hydrogen gas or gasolinevapors are Fuel can cause fires andsevere Fuel!Gasoline is extremely flammable and itsvapors can explode if ignited.

6 Storegasoline only in approved containers, inwell ventilated, unoccupied buildings,away from sparks or flames. Do not fillthe fuel tank while the engine is hot orrunning, since spilled fuel could ignite ifit comes in contact with hot parts orsparks from ignition. Do not start theengine near spilled fuel. Never usegasoline as a cleaning Solvents can cause severeinjury or only in well ventilated areasaway from ignition Solvents!Carburetor cleaners and solvents areextremely flammable. Keep sparks,flames, and other sources of ignitionaway from the area. Follow the cleanermanufacturer s warnings andinstructions on its proper and safe use gasoline as a cleaning Shock!

7 Never touch electrical wires orcomponents while the engine is can be sources of electrical not fill the fuel tank while theengine is hot or 1 Safety and General Information1 Factory Code3705810334A. Model H 980 SB. Spec. Identification NumbersWhen ordering parts, or in any communicationinvolving an engine, always give the Model,Specification, and Serial Numbers, including lettersuffixes if there are engine identification numbers appear on a decal,or decals, affixed to the engine shrouding. See Figure1-1. An explanation of these numbers is shown inFigure 1-1.

8 Engine Identification Decal 1-2. Explanation of Engine Identification EngineHorizontal CrankshaftNumerical DesignationVersion CodeS = Electric StartCH940-0001CH960-0001CH980-0001 Complete Spec. Number(Incorporating Model Variation No. ofBasic Spec.)C. Serial Manufactured 1 Safety and General InformationOil RecommendationsUsing the proper type and weight of oil in thecrankcase is extremely important. So is checking oildaily and changing oil regularly. It is alsorecommended that a consistent brand of oil be to use the correct oil, or using dirty oil, causespremature engine wear and TypeUse high-quality detergent oil of API (AmericanPetroleum Institute) Service Class SG, SH, SJ orhigher.

9 Select the viscosity based on the airtemperature at the time of operation as shown in thefollowing : Using other than service class SG, SH, SJ orhigher oil or extending oil change intervalslonger than recommended can cause : Synthetic oils meeting the listedclassifications may be used with oil changesperformed at the recommended , to allow piston rings to properlyseat, a new or rebuilt engine should beoperated for at least 50 hours using standardpetroleum based oil before switching tosynthetic logo or symbol on oil containers identifies the APIservice class and SAE viscosity grade.

10 See Figure 1-3. Oil Container to Section 6 - Lubrication System for detailedprocedures on checking the oil, changing the oil andchanging the oil RecommendationsWARNING: Explosive Fuel!Gasoline is extremely flammable and its vapors can explode ifignited. Before servicing the fuel system, make sure there are nosparks, open flames or other sources of ignition nearby as thesecan ignite gasoline vapors. Disconnect and ground the sparkplug leads to prevent the possibility of sparks from the RecommendationsPurchase gasoline in small quantities that can be usedwithin 30 days, and store only in clean, approvedcontainers.