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OWNER'S MANUAL
COMMAND 18-26 HP
HORIZONTAL CRANKSHAFT
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Safety Precautions To insure safe operations 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. CAUTION Caution is used to indicate the presence
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Safety Precautions (Cont.) WARNING WARNING WARNING Explosive Gas can cause fires and Accidental Starts can cause Carbon Monoxide can cause severe acid burns. severe injury or death. severe nausea, fainting or death. Charge battery only in a well Disconnect and ground spark plug Do not operate engine in closed or ventilated area. Keep sources of leads before servicing. confined area. ignition away. Accidental Starts! Lethal Exhaust Gases! Explosive Gas! Disabling engine. Accidental Engine exhaust
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Air Cleaner Dipstick Oil Fill Fuel Pump Oil Filter Oil Cooler Electric Starter Rectifier-Regulator Side Oil Drain Plugs Figure 1. Typical Command Horizontal Shaft Engine (CH18-25). Throttle Body Intake Manifold Ignition Coil Fuel Injectors Ignition Coil Oil Filter Oil Cooler Rectifier-Regulator Figure 2. CH26 Command Horizontal Shaft Engine. 4
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Oil Recommendations Fuel Recommendations Using the proper type and weight of oil in the crankcase WARNING: Explosive Fuel! is extremely important. So is checking oil daily and Gasoline is extremely flammable and its vapors can changing oil regularly. Failure to use the correct oil, or explode if ignited. Store gasoline only in approved using dirty oil, causes premature engine wear and containers, in well ventilated, unoccupied buildings, away failure. from sparks or flames. Do not fill the fuel
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Engine Identification Numbers Operating Instructions When ordering parts, or in any communication involving Also read the operating instructions of the equipment an engine, always give the Model, Specification, and this engine powers. Serial Numbers of the engine. Pre-Start Checklist The engine identification numbers appear on a decal (or • Check oil level. Add oil if low. Do not overfill. decals) affixed to the engine shrouding. Include letter suffixes, if there are any. • Check fuel level. Add
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4. For a Warm Engine – Return choke to “off” position as soon as engine starts. Stopping 1. Remove the load by disengaging all PTO driven Choke Throttle attachments. Control Control 2. For CH18-25 Engines Without A Shutdown Solenoid: Move the throttle to the “slow” or Figure 6. Optional Engine Mounted Throttle and “low” idle position. Allow the engine to run at idle Choke Controls (CH18-25). for 30-60 seconds; then stop the engine. 2. Start the engine by activating the key switch. For CH18-25 En
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Engine Speed WARNING: Hot Parts! NOTE: Do not tamper with the governor setting to Engine components can get extremely hot from increase the maximum engine speed. operation. To prevent severe burns, do not touch these Overspeed is hazardous and will void the areas while the engine is running–or immediately after it engine warranty. The maximum allowable high is turned off. Never operate the engine with heat shields idle speed for these engines is 3750 RPM, no or guards removed. load. Maintenance
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2. Remove one of the oil drain plugs, oil fill cap, and dipstick. Be sure to allow ample time for complete drainage. “F” Mark 3. Reinstall the drain plug. Make sure it is tightened to 13.6 N·m (10 ft. lb.) torque. Operating Range 4. Fill the crankcase, with new oil of the proper type, to the “F” mark on the dipstick. Refer to “Oil Type” on page 5. Always check the level with the dipstick before adding more oil. 5. Reinstall the oil fill cap and tighten securely. Figure 7. Oil Level Dipstick. Re
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Change Oil Filter Service Precleaner and Air Cleaner Element Replace the oil filter at least every other oil change This engine is equipped with a replaceable, high density (every 200 hours of operation). Always use a genuine paper air cleaner element. Some engines are also Kohler oil filter, Part No. 12 050 01. equipped with an oiled, foam precleaner which surrounds the paper element. See Figure 10. Replace the oil filter as follows: Cover Knob Air Cleaner 1. Drain the oil from the engine crank
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7. When precleaner replacement is necessary, order Clean Air Intake/Cooling Areas genuine Kohler parts. To ensure proper cooling, make sure the grass screen, cooling fins, and other external surfaces of the engine 24 083 02 61 mm deep x 173 mm O.D. are kept clean at all times. 24 083 05 71 mm deep x 173 mm O.D. Every 100 hours of operation (more often under Service Paper Element extremely dusty, dirty conditions), remove the blower Every 100 hours of operation (more often
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3. Check the gap using a wire feeler gauge. Adjust Fuel System the gap to 0.76 mm (0.030 in.) by carefully bending the ground electrode. See Figure 11. WARNING: Fuel System Under Pressure! The CH26 fuel system operates under high pressure, Wire Gauge and the fuel filter and fuel line used must be approved system components only. Use of substitute parts can result in system failure, gasoline leakage and possible Spark Plug explosion. Fuel Filter CH18-25 Engines: Some engines are equipped with an
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• Make sure the air cleaner element is clean and all CH18-25 Carburetor Troubleshooting and air cleaner element components are fastened Adjustments securely. NOTE: Carburetor adjustments should be made only after the engine has warmed up. If, after checking the items listed above, the engine is hard to start, runs roughly, or stalls at low idle speed, it The carburetor is designed to deliver the correct may be necessary to adjust or service the carburetor. fuel-to-air mixture to the engine under
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CH26 Electronic Fuel Injection (EFI) Adjustment – EFI Throttle Body System Low Idle Speed (RPM) is the only adjustment that can The EFI system is a complete, electronically controlled be made. All other fuel calibrations are permanently fuel management system, designed to deliver a preset and controlled by the ECU. The standard low idle precisely controlled fuel flow under all operating speed is 1500 RPM* (+ 75 RPM). conditions. The electronic control unit (ECU), the ‘‘brain’’ of the system, aut
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Troubleshooting When troubles occur, be sure to check the simple causes which, at first, may seem too obvious to be considered. For example, a starting problem could be caused by an empty fuel tank. Some common causes of engine troubles are listed in the following table. Do not attempt to service or replace major engine components, or any items that require special timing or adjustment procedures. Have your Kohler Engine Service Dealer do this work. Possible Cause No Improper Dirt In Dirty Inco
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Specifications Model: ................................................ CH18 .................. CH20 .................. CH22 ................. CH25/CH26 # Bore: ............................... in. (mm)... 3.03 (77) .............3.03 (77) ............ 3.03 (77) ................... 3.27 (83)/3.27 (83) Stroke: ............................ in. (mm)... 2.64 (67) .............2.64 (67) ............ 2.64 (67) ............ 2.64 (67)/2.64 (67) 3 3 # Displacement:................ in (cm )... 38.1 (624)....
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KOHLER CO. FEDERAL AND CALIFORNIA EMISSION CONTROL SYSTEMS LIMITED WARRANTY UTILITY AND LAWN AND GARDEN 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 utility/lawn/garden equipment engine (herein engine). For California, engines produced in 1995 and later must be designed, built and equipped to meet the state’s stringent anti-smog standard
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LIMITATIONS This Emission Control Systems Warranty shall not cover any of the following: (a) repair or replacement required because of misuse or neglect, improper maintenance, repairs improperly performed or replacements not conforming to Kohler Co. specifications that adversely affect performance and/or durability and alterations or modifications not recommended or approved in writing by Kohler Co., (b) replacement of parts and other services and adjustments necessary for required maintenance a
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FOR SALES AND SERVICE INFORMATION IN U.S. AND CANADA, CALL 1-800-544-2444 FORM NO.: TP-2474-E ISSUED: 12/94 REVISED: 5/99 MAILED: ENGINE DIVISION, KOHLER CO., KOHLER, WISCONSIN 53044 LITHO IN U.S.A.
