Kohler COMMAND CH735 Owner'S Manual Download Page 1 | Manualshive

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CH18-CH26, CH620-CH750

O

WNER

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S

M

ANUAL

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ORIZONTAL

C

RANKSHAFT

COMMAND

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3
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Summary of Contents for COMMAND CH735

Page 1: ...CH18 CH26 CH620 CH750 OWNER S MANUAL HORIZONTAL CRANKSHAFT COMMAND ...

Page 2: ...e with heat shields or guards removed Electrical Shock can cause injury Do not touch wires while engine is running CAUTION California Proposition 65 Warning Engine exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm Safety Precautions To ensure safe operations please read the following statements and understand thei...

Page 3: ...hler designs long life strength and on the job durability into each engine making a Kohler engine dependable dependability you can count on Here are some reasons why Efficient overhead valve design and full pressure lubrication provide maximum power torque and reliability under all operating conditions Dependable maintenance free electronic ignition ensures fast easy starts time after time Kohler ...

Page 4: ...al Command Horizontal Shaft 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 Dipstick Oil Drain Plug Each Side Electric Starter Fuel Filter ...

Page 5: ...ne Alcohol blends Gasohol up to 10 ethyl alcohol 90 unleaded gasoline by volume is approved as a fuel for Kohler engines Other gasoline alcohol blends including E20 and E85 are not to be used and not approved Any failures resulting from use of these fuels will not be warranted Gasoline Ether blends Methyl Tertiary Butyl Ether MTBE and unleaded gasoline blends up to a maximum of 15 MTBE by volume a...

Page 6: ...tch Model Electric Start Operating Instructions Also read the operating instructions of the equipment this engine powers Pre Start Checklist Check oil level Add oil if low Do not overfill Check fuel level Add fuel if low Check cooling air intake areas and external surfaces of engine Make sure they are clean and unobstructed Check that the air cleaner components and all shrouds equipment covers and...

Page 7: ...tart repeat steps a and b If the engine does not start after two priming intervals contact your Kohler Engine Service Dealer for further assistance NOTE Do not crank the engine continuously for more than 10 seconds at a time If the engine does not start allow a 60 second cool down period between starting attempts Failure to follow these guidelines can burn out or permanently damage the starter mot...

Page 8: ...uipment disable the engine as follows 1 Disconnect the spark plug lead s 2 Disconnect negative battery cable from battery Stopping 1 Remove the load by disengaging all PTO driven attachments 2 For Carbureted Engines Without A Shutdown Solenoid Move the throttle to the slow or low idle position Allow the engine to run at idle for 30 60 seconds then stop the engine For Carbureted Engines Equipped Wi...

Page 9: ...not 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 Remove the dipstick wipe oil off Reinsert the dipstick into the tube and press all the way down 4 Remove the dipstick and check the oil level ...

Page 10: ...lass SG SH SJ or higher oil as specified in the Viscosity Grades table Figure 3 on page 5 Change the oil while the engine is still warm The oil will flow more freely and carry away more impurities Make sure the engine is level when filling checking and changing the oil Change the oil as follows see Figures 8 and 9 1 To keep dirt debris etc out of the engine clean the area around the oil fill cap d...

Page 11: ...be sure it is up to but not over the F mark 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 frequently under severe...

Page 12: ...ver element cover nut and air cleaner cover Secure cover with the cover retaining knob 7 When element replacement is necessary order genuine Kohler parts Figure 12 Removing Elements 3 After the main element is removed check the condition of the inner element It should be replaced whenever it appears dirty typically every other time the main element is replaced Clean the area around the base of the...

Page 13: ...reinstalled NOTE Operating the engine with a blocked grass screen dirty or plugged cooling fins and or cooling shrouds removed will cause engine damage due to overheating Cleanout kits 25 755 20 S black or 25 755 21 S gold allow inspection and cleanout of the cooling fins without removing the blower housing Ignition System Carbureted Engines Use an electronic Capacitive Discharge CD ignition syste...

Page 14: ...In compliance with CARB Tier III Emission Regulations carbureted engines with a Family identification number beginning with 6 or greater see Figure 16 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 EFI Engines A special high volume high pressure fil...

Page 15: ...er 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 Adjust Carburetor Models CH18 740 There are no accessible mixture adjustment screws on the carburetor The only setting which can be changed is the low idle speed 1 Start the engine and run at half throttle for 5 to 10 minutes to warm up The...

Page 16: ...ment needle 4 Recheck adjust the Low Idle Speed RPM to the specified setting Model CH750 CH750 engines use a Keihin BK two barrel carburetor with fixed main jets and fixed or limiter equipped low idle fuel adjusting needles See Figure 20 Adjustments are made as follows Low Idle Fuel Adjusters with limiters Low Idle Speed RPM Adjustment Screw Fuel Solenoid Rich Lean Adjust to Midpoint Lean Rich Adj...

Page 17: ...sidered 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 When an EFI engine is started cold the ECU will be using internal progra...

Page 18: ...r any of the electrical components 2 Change the oil and filter while the engine is still warm from operation See Change Oil and Filter on page 10 3 The fuel system must be completely emptied or the gasoline must be treated with a stabilizer to prevent deterioration If you choose to use a stabilizer follow the manufacturers recommendations and add the correct amount for the capacity of the fuel sys...

Page 19: ...ER CO KOHLER WISCONSIN 53044 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...

Page 20: ...s and clamps if equipped Air filter fuel filter and spark plugs only Spark advance module if equipped to first scheduled replacement point Crankcase breather Evaporative System if equipped Air Injection System if equipped Canister if equipped Air pump or pulse valve assembly if equipped Canister filter if equipped Control distribution valve if equipped Vapor hose if equipped Distribution manifold ...

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