Kohler CH730-745 manual

C OMMAND S ERIES CH18-26, CH730-745 O WNER ' S M ANUAL H ORIZONT AL C RANKSHAFT[...]

2 Explosive Fuel can cause fires and severe burns. S top engine before filling fuel tank. W ARNING Explosive Fuel! Gasoline is extremely flammable and its vapors can explode if ignited. Store gasoline only in approved containers, in well ventilated, unoccupied buildings, away from sparks or flames. Do not fill the fuel tank while the engine is hot [...]

3 Safety Precautions (Cont.) Accidental S t arts can cause severe injury or death. Disconnect and ground spark plug leads before servicing. W ARNING Carbon Monoxide can cause severe nausea, fainting or death. Do not operate engine in closed or confined area. W ARNING W ARNING Explosive Gas can cause fires and severe acid burns. Charge battery only [...]

4 Figure 1. T ypical Command Horizontal Shaf t Carbureted Engine. Figure 2. T ypical Command Horizontal Shaf t EFI Engine. Air Cleaner Oil Fill Rectifier-Regulator Throttle Body Intake Manifold Ignition Coil Fuel Injectors Ignition Coil Oil Filter Oil Cooler Oil Filter Rectifier-Regulator Fuel Pump Electric S tarter Oil Cooler Dip stick Side Oil Dr[...]

5 Refer to “Maintenance Instructions” beginning on p age 8 for detailed oil check, oil change, and oil filter change procedures. Fuel Recommendations W ARNING: Explosive Fuel! Gasoline is extremely flammable and its vapors can explode if ignited. Store gasoline only in approved containers, in well ventilated, unoccupied buildings, away from spa[...]

6 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 affixed to the engine shrouding. Include letter suf fixes, if there are any . Record your engine identification numbers on the i[...]

7 flywheel is rotating, the starter pinion and flywheel ring gear may clash resulting in damage to the st arter . If the starter does not turn the engine over , shut off starter immediately . Do not make further attempts to start the engine until the condition is corrected. Do not jump start using another battery (refer to “Battery” on this pag[...]

8 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. NOTE: D o n o t operate this engine continuously at angles exceeding 25° in any direction. Engine damage could result from insufficient lubrication. Coolin[...]

9 Change Oil and Filter , Service Oil Cooler Change Oil Change oil after every 100 hours of operation (more frequently under severe conditions). Refill with service class SG , SH, SJ or higher oil as specified in the ‘‘V iscosity Grades’’ table (Figure 3) on p age 5. Change the oil while the engine is still warm. The oil will flow more free[...]

10 Service Oil Cooler Some engines are equipped with an oil cooler . One style of oil cooler mounts on the engine crankcase and has the oil filter on it (See Figure 8). The other style of oil cooler is mounted on the blower housing (See Figure 9), separate from the oil filter . Inspect and clean the oil cooler every 100 hours of operation (more fre[...]

11 4. Do not wash the paper element or use pressurized air , as this will damage the element. Replace a dirty , bent, or damaged element with a genuine Kohler element. Handle new elements carefully; do not use if the sealing surfaces are bent or damaged. 5. When servicing the air cleaner , check the air cleaner base. Make sure it is secured and not[...]

12 Clean Air Intake/Cooling Areas T o ensure proper cooling, make sure the grass screen, cooling fins, and other external surfaces of the engine are kept clean at all times . Every 100 hours of operation (more often under extremely dusty , dirty conditions), remove the blower housing* and other cooling shrouds. Clean the cooling fins and external s[...]

13 Fuel Filter Carbureted Engines: Most engines are equipped with an in-line fuel filter . Periodically inspect the filter and replace with a genuine Kohler filter every 200 operating hours . EFI Engines: A special, high volume, high pressure filter with greater filtration capabilities and internal surface area is used. See Figure 15. Figure 14. Se[...]

14 Figure 16. Carburetor (CH18-25,CH730,740). T roubleshooting If engine troubles are experienced that appear to be fuel system related, check the following areas before adjusting the carburetor . • Make sure the fuel tank is filled with clean, fresh gasoline. • Make sure the fuel tank cap vent is not blocked and that it is operating properly .[...]

15 T roubleshooting 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 t ank. Some common causes of engine troubles are listed in the following table. Do not attempt to service or replace major engine components, or any ite[...]

16 Storage If the engine will be out of service for two months or more, use the following storage procedure: 1. Clean the exterior surfaces of the engine. On EFI engines, avoid spraying water at the wiring harness or any of the electrical components. 2. Change the oil and filter while the engine is still warm from operation. See “Change Oil and O[...]

17 KOHLER CO. FEDERAL AND CALIFORNIA EMISSION CONTROL SYSTEMS LIMITED W ARRANTY SMALL OFF-ROAD ENGINES The U.S. Environmental Protection Agency (EP A), the California Air Resources Board (CARB), and Kohler Co. are pleased to explai n the Federal and California Emission Control Systems W arranty on your small off-road equipment engine. For Californi[...]

18 (c) For warranty repairs, the engine must be presented to a Kohler Co. service center as soon as a problem exists. Call 1-800-54 4-2444 or access our website at: www .kohlerengines.com, for the names of the nearest service centers. The warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days. If you have any que[...]

ENGINE DIVISION, KOHLER CO., KOHLER, WISCONSIN 53044 FOR SALES AND SERVICE INFORMA TION IN U.S. AND CANADA, CALL 1-800-544-2444 LITHO IN U.S.A. FORM NO.: 2 4 590 01 ISSUED: 1 1/04 REVISED: 1/05 MAILED:[...]