OWNER'S MANUAL COMMAND CV18-CV26, CV620-CV750 VERTICAL CRANKSHAFT
Safety Precautions To ensure safe operation please read the following statements and understand their meaning. Also refer to your equipment owner's manual for other important safety information. This manual contains safety precautions which are explained below. Please read carefully. WARNING Warning is used to indicate the presence of a hazard that can cause severe personal injury, death, or substantial property damage if the warning is ignored.
Safety Precautions (Cont.) WARNING WARNING WARNING Accidental Starts can cause severe injury or death. Carbon Monoxide can cause severe nausea, fainting or death. Explosive Gas can cause fires and severe acid burns. Disconnect and ground spark plug leads before servicing. Avoid inhaling exhaust fumes, and never run the engine in a closed building or confined area. Charge battery only in a well ventilated area. Keep sources of ignition away. Accidental Starts! Disabling engine.
Engine Identification Label Air Cleaner Air Intake Screen Oil Cooler Blower Housing Oil Fill/ Dipstick Oil Filter Fuel Pump Air Cleaner Cover Electric Starter Breather Oil Separator Figure 1. Typical Command Vertical Shaft Carbureted Engine. Oil Fill/Dipstick Oil Cooler Ignition Coil Ignition Coil Fuel Injector Fuel Injector Throttle Body Intake Manifold Figure 2. Typical Command Vertical Shaft EFI Engine.
Oil Recommendations Using the proper type and weight of oil in the crankcase is extremely important. So is checking oil daily and changing oil regularly. Failure to use the correct oil, or using dirty oil, causes premature engine wear and failure. Oil Type Use high quality detergent oil of API (American Petroleum Institute) service class SG, SH, SJ or higher. Select the viscosity based on the air temperature at the time of operation as shown in the following table.
Engine Identification Numbers When ordering parts, or in any communication involving an engine, always give the Model, Specification, and Serial Numbers of the engine. The engine identification numbers appear on a decal (or decals) affixed to the engine shrouding. Include letter suffixes, if there are any. Record your engine identification numbers on the identification label below (Figure 5) for future reference. For Models CV18-CV745 IMPORTANT ENGINE INFORMATION THIS ENGINE MEETS U.S.
WARNING: Lethal Exhaust Gases! Engine exhaust gases contain poisonous carbon monoxide. Carbon monoxide is odorless, colorless, and can cause death if inhaled. Avoid inhaling exhaust fumes, and never run the engine in a closed buildingor confined area. Cold Weather Starting Hints 1. Be sure to use the proper oil for the temperature expected. See Figure 3 on page 5. 2. Declutch all possible external loads. 3. Be sure the battery is in good condition.
If the battery charge is not sufficient to crank the engine, recharge the battery (see page 14). Operating Angle of Operation This engine will operate continuously at angles up to 25°. Check oil level to assure crankcase oil level is at the “FULL” mark on the dipstick. Refer to the operating instructions of the equipment this engine powers. Because of equipment design or application, there may be more stringent restrictions regarding the angle of operation.
Check Oil Level The importance of checking and maintaining the proper oil level in the crankcase cannot be overemphasized. Check oil BEFORE EACH USE as follows: 1. Make sure the engine is stopped, level, and is cool so the oil has had time to drain into the sump. 2. To keep dirt, debris, etc., out of the engine, clean the area around the dipstick before removing it. 3. Unthread and remove the dipstick; wipe oil off. Reinsert the dipstick into the tube and rest the cap on the tube.
5. Reinstall the oil fill cap/dipstick and tighten securely. To service the crankcase mounted oil cooler, clean off the outside fins with a brush or with compressed air. NOTE: To prevent extensive engine wear or damage, always maintain the proper oil level in the crankcase. Never operate the engine with the oil level below the “ADD” mark or over the “FULL” mark on the dipstick. Starter Figure 10. Blower Housing Mounted Oil Cooler.
Replace the oil filter as follows: 8. Fill the crankcase with new oil, of the proper type, to the “FULL” mark on the dipstick. 1. Drain the oil from the engine crankcase. 2. Allow the oil filter to drain. 3. Before removing the oil filter, clean the area around the oil filter to keep dirt and debris out of the engine. Remove the old filter. Wipe off the surface where the filter mounts. See Figure 8. 4. Place a new replacement filter in a shallow pan with the open end up.
Element Cover Nut Element Cover Cover Retaining Knob Rubber Seal Element Stud Air Cleaner Cover (Std.) Precleaner EFI Air Cleaner Base Air Cleaner Base Figure 13. Air Cleaner System Components – Type B (Commercial Mower). Service Precleaner If so equipped, wash and reoil the precleaner every 25 hours of operation (more often under extremely dusty or dirty conditions).
7. Reinstall the paper element, precleaner, element cover, element cover wing nut and air cleaner cover. Secure cover with the cover retaining knob. 6. Install the new inner element, Kohler Part No. 25 083 04-S followed by the outer element, Kohler Part No. 25 083 01-S. Slide each fully into place in the air cleaner housing. 8. When element replacement is necessary, order genuine Kohler Parts. 7. Reinstall the end cap so the dust ejector valve is down and secure with the two retaining clips.
Check Spark Plugs Battery Charging Every 200 hours of operation, remove the spark plugs, check condition, and reset the gap or replace with new plugs as necessary. The standard spark plug is a Champion® RC12YC (Kohler Part No. 12 132 02-S). RFI compliant engines use a Champion® XC12YC (Kohler Part No. 25 132 14-S) spark plug. A high-performance spark plug, Champion® Platinum 3071 (used on Pro Series engines, Kohler Part No. 25 132 12-S) is also available. Equivalent alternate brand plugs can also be used.
Fuel Line Carbureted Engines: In compliance with CARB Tier III Emission Regulations, carbureted engines with a Family identification number beginning with “6” or greater (see Figure 18), must use Low Permeation SAE 30 R7 rated fuel line; certified to meet CARB requirements. Standard fuel line may not be used. Order replacement hose by part number through a Kohler Engine Service Dealer. IMPORTANT ENGINE INFORMATION THIS ENGINE MEETS U.S.
• Make sure fuel is reaching the carburetor. This includes checking the fuel lines and fuel pump for restrictions or faulty components, replace as necessary. • Make sure the air cleaner element is clean and all air cleaner element components are fastened securely. If, after checking the items listed above, the engine is hard to start, runs roughly, or stalls at low idle speed, it may be necessary to adjust or service the carburetor.
1. Start the engine and run at half throttle for 5 to 10 minutes to warm up. The engine must be warm before doing steps 2, 3, and 4. 2. Place the throttle control into the idle or slow position. Adjust the low idle speed to 1200 RPM* Follow the Adjusting the Low Idle Speed (RPM) procedure. Hold Throttle Lever Against Screw 3. Low Idle Fuel Needle(s) Setting: Place the throttle into the idle or slow position. a.
Electronic Fuel Injection (EFI) System The EFI system is a complete, electronicallycontrolled, fuel management system, designed to deliver a precisely controlled fuel flow under all operating conditions. The electronic control unit (ECU), the "brain" of the system, automatically adjusts fuel delivery and ignition timing based upon load, speed, operating temperature, and exhaust emission levels. The low idle speed is the only manual adjustment possible.
Possible Cause No Problem Fuel Will Not Start • Hard Starting Stops Suddenly • Lacks Power Operates Erratically Knocks or Pings Skips or Misfires Backfires Overheats High Fuel Consumption Improper Fuel • • • • • • • • Dirt In Dirty Fuel Line Grass Screen /System • • • • • • • • • • • • • • Incorrect Oil Level Engine Overloaded Dirty Air Cleaner Faulty Spark Plug • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Storage Parts Ordering If the engine will be out of service for two
Specifications Model: .......................................................................... CV18/CV620 ................... CV20/CV640 .......................... CV23/CV675/CV680 Bore: ............................... mm (in.) ............................. 77 (3.03) ........................... 77 (3.03) .................................. 80 (3.2) Stroke: ............................ mm (in.) ............................. 67 (2.6) ............................. 67 (2.6) ....................................
LIMITED 2 YEAR COMMAND ENGINE WARRANTY Kohler Co. warrants to the original consumer that each new COMMAND engine sold by Kohler Co. will be free from manufacturing defects in materials or workmanship in normal service for a period of two (2) years from date of purchase, provided if is operated and maintained in accordance with Kohler Co.’s instructions and manuals. Our obligation under this warranty is expressly limited, at our option, to the replacement or repair at Kohler Co.
KOHLER CO. FEDERAL AND CALIFORNIA EMISSION CONTROL SYSTEMS LIMITED WARRANTY SMALL OFF-ROAD AND CLASS 1 LSI ENGINES The U.S. Environmental Protection Agency (EPA), the California Air Resources Board (CARB), and Kohler Co. are pleased to explain the Federal and California Emission Control Systems Warranty on your off-road equipment engine. In California beginning in 2006, "emissions" means both exhaust and evaporative emissions.
Listed below are the parts covered by the Federal and California Emission Control Systems Warranty. Some parts listed below may require scheduled maintenance and are warranted up to the first scheduled replacement point for that part.
FORM NO.: 24 590 02-B ISSUED: 11/04 REVISED: 9/08 LITHO IN U.S.A. FOR SALES AND SERVICE INFORMATION IN U.S. AND CANADA, CALL 1-800-544-2444 KohlerEngines.com ENGINE DIVISION, KOHLER CO.
