English - Kohler Engines
Contents
1. A Dipstick Oil Fill Cc Fuel Filter D Oil Filter E Oil Cooler E Oil Drain Plug e Debris Screen H Dut Ejector Heavy Duty Air E Cleaner End Cap Element Inner Element Air Cleaner Inlet Screen Retaining Cli Ejector Area Housing g Sip j Air Cleaner Air Cleaner F Eg Knob R Rubber Seal s Cover Wing Nut o Element Cover Precleaner Paper Element Alr Cleaner Low Profile Air EA nat ena 2 Oil Fill Dipstick Pre Start Checklist Check oil level Add oil if low Do not overfill Check fuel level Add fuel if low Check fuel system components and lines for leaks Check and clean cooling areas air intake areas and external surfaces of engine particularly after storage won A Check that air cleaner components and all shrouds equipment covers and guards are in place and securely fastened Check spark arrestor if equipped 24 590 27 Rev A KohlerEngines com 3 or A warnine Carbon Monoxide can cause severe nausea fainting or death Avoid inhaling exhaust fumes Engine exhaust gases contain poisonous carbon monoxide Carbon monoxide is odorless colorless and can cause death if inhaled A WARNING Rotating Parts can cause severe injury Stay away while engine is in operation Keep hands feet hair and clothing away from all moving parts to prevent injury Never operate engine with covers shrouds or gu2. al Never operate engine with heat shields or guards removed Proper cooling is essential To prevent over heating clean screens cooling fins and other external surfaces of engine Avoid spraying water at wiring harness or any electrical components See Maintenance Schedule Repairs Service Parts We recommend that you use a Kohler authorized dealer for all maintenance service and replacement parts for engine To find a Kohler authorized dealer visit KohlerEngines com or call 1 800 544 2444 U S and Canada Storage If engine will be out of service for 2 months or more follow procedure below 1 Add Kohler PRO Series fuel treatment or equivalent to fuel tank Run engine 2 3 minutes to get stabilized fuel into fuel system failures due to untreated fuel are not warrantable Change oil while engine is still warm from operation Remove spark plug s and pour about 1 oz of engine oil into cylinder s Replace spark plug s and crank engine slowly to distribute oil 3 Disconnect negative battery cable 4 Store engine in a clean dry place N N Troubleshooting Do not attempt to service or replace major engine components or any items that require special timing or adjustment procedures This work should be performed by a Kohler authorized dealer Possible Cause Dirt In Dirty Faulty Problem No Improper Fuel Debris Incorrect Engine Dirty
3. 2 Position throttle control between half and full throttle stop engine Angle of Operation Refer to operating instructions of equipment this engine powers Do not operate this engine exceeding maximum angle of operation see specification table Engine damage could result from insufficient lubrication Engine Speed NOTE Do not tamper with governor setting to increase maximum engine speed Overspeed is hazardous and will void warranty Cold Weather Operation Anti icing kits can be installed to improve cold weather operation and are available through your local Kohler authorized dealer High Altitude Operation This engine may require a high altitude carburetor kit to ensure correct engine operation at altitudes above 4000 ft 1219 meters To obtain high altitude kit information or to find a Kohler authorized dealer visit KohlerEngines com or call 1 800 544 2444 U S and Canada This engine should be operated in its original configuration below 4000 ft 1219 meters as damage may occur if high altitude carburetor kit is installed and operated below 4000 ft 1219 meters 24 590 27 Rev A W A warnine Oo Accidental Starts can cause severe injury or death Te Disconnect and ground spark x plug lead s before servicing Normal maintenance replacement or repair of emission control devices and systems may be performed by any repair establishment or individual however warranty repairs must be p
4. detergent Rinse and allow to air dry 3 Saturate precleaner with new engine oil squeeze out excess oil 4 Reinstall precleaner over paper element Paper Element 1 Clean area around element Remove wing nut element cover and paper element with precleaner 2 Separate precleaner from element service precleaner and replace paper element 3 Check condition of rubber seal and replace if necessary 4 Install new paper element on base install precleaner over paper element reinstall element cover and secure with wing nut Reinstall air cleaner cover and secure with knob Heavy Duty 1 Unhook retaining clips and remove end cap s 2 Check and clean inlet screen if equipped 3 Pull air cleaner element out of housing and replace Check condition of inner element replace when dirty 24 590 27 Rev A KohlerEngines com 4 Check all parts for wear cracks or damage and that ejector area is clean 5 Install new element s 6 Reinstall end cap s with dust ejector valve screen down secure with retaining clips Breather Tube Ensure both ends of breather tube are properly connected Oil Cooler if equipped 1 Clean fins with a brush or compressed air 2 Remove two screws securing oil cooler and tilt to clean back side 3 Reinstall oil cooler Air Cooling UA palsy A WARNING Hot Parts can cause severe burns Do not touch engine while operating or just after stopping
5. 30 5W 30 F 20 0 20 32 40 50 60 80 100 c 30 20 10 0 10 20 30 40 24 590 27 Rev A KohlerEngines com NOTE To prevent extensive engine wear or damage never run engine with oil level below or above operating range indicator on dipstick Ensure engine is cool Clean oil fill dipstick areas of any debris 1 Remove dipstick wipe oil off a Press in cap reinsert dipstick into tube press completely down or b Thread on cap reinsert dipstick into tube rest cap on tube do not thread cap onto tube 2 Remove dipstick check oil level Level should be at top of indicator on dipstick 3 If oil is low on indicator add oil up to top of indicator mark 4 Reinstall dipstick and tighten securely a Change Oil and Filter Change oil while engine is warm 1 Clean area around oil fill cap dipstick drain plug oil drain valve a Remove drain plug and oil fill cap dipstick Allow oil to drain completely or b Open oil drain valve cap if needed attach a length of 1 2 in I D hose to direct oil into appropriate container twist valve drain body counterclockwise and pull Remove dipstick Allow oil to drain completely Clean area around oil filter Place a container under filter to catch any oil and remove filter Wipe off mounting surface a Reinstall drain plug Torque to 10 ft Ib 13 6 N m or b Close oil drain valve body remove hose if used and replace cap Pla
6. 5 are NOT approved and should NOT be used effects of old stale or contaminated fuel are not warrantable Fuel must meet these requirements e Clean fresh unleaded gasoline e Octane rating of 87 R M 2 or higher e Research Octane Number RON 90 octane minimum e Gasoline up to 10 ethyl alcohol 90 unleaded is acceptable e Methyl Tertiary Butyl Ether MTBE and unleaded gasoline blend max 15 MTBE by volume are approved e Do not add oil to gasoline e Do not overfill fuel tank e Do not use gasoline older than 30 days Low permeation fuel line must be installed on carbureted Kohler Co engines to maintain EPA and CARB regulatory compliance 24 590 27 Rev A Spark Plugs Clean out spark plug recess Remove plug and replace 1 Check gap using wire feeler gauge Adjust gap see specification table for adjustment 2 Install plug into cylinder head 3 Torque plug to 20 ft Ib 27 N m Air Cleaner NOTE Operating engine with loose or damaged air cleaner components could cause premature wear and failure Replace all bent or damaged components Paper element cannot be blown out with compressed air Low Profile Commercial Mower Loosen knob and remove air cleaner cover A caution Electrical Shock can cause injury Do not touch wires while engine is running NOTE Precleaner 1 Remove precleaner from paper element 2 Replace or wash precleaner in warm water with
7. Air Spark Fuel Fuel Line Screen Oil Level Overloaded Cleaner Plug Will Not Start e Hard Starting e e e Stops Suddenly Lacks Power e e Operates Erratically e Knocks or Pings e o Skips or Misfires e e Backfires e e Overheats e e High Fuel 7 X Consumption Engine Specifications Maximum Angle of Operation Plug Gap full oil level Displacement een CH18 CH620 CV18 CV620 3 03 in 38 1 cu in CH20 CH640 77 mm 624 cc CV20 CV640 CH23 CH680 3 2 in 2 6 in 41 cu in CV23 CV680 80 mm 67 mm 674 cc x 1 7 1 9 U S qt 0 03 in 25 1 6 1 8L 0 76 mm 44 2 cu in 3 27 in 725 cc 83 mm 2 72 in 45 6 cu in 69 mm 747 cc Exceeding maximum angle of operation may cause engine damage from insufficient lubrication Additional specification information can be found in service manual at KohlerEngines com Exhaust Emission Control System for models CH18 CH23 CV18 CV23 CH620 CH740 CV620 CV740 CH750 and CV750 is EM for U S EPA California and Europe Any and all horsepower hp references by Kohler are Certified Power Ratings and per SAE J1940 amp J1995 hp standards Details on Certified Power Ratings can be found at KohlerEngines com 2011 by Kohler Co All rights reserved KohlerEngine
8. KOHLER Command CH18 CH23 CH620 CH740 CH750 CV18 CV23 CV620 CV740 CV750 Owner s Manual IMPORTANT Read all safety precautions and instructions carefully before operating equipment Refer to operating instruction of equipment that this engine powers Ensure engine is stopped and level before performing any maintenance or service Warranty coverage as outlined in the warranty card and on KohlerEngines com Please review carefully as it provides you specific rights and obligations Record engine information to reference when ordering parts or obtaining warranty coverage 24 590 27 Rev A Engine Model Specification Serial Number Purchase Date KohlerEngines com Safety Precautions amp WARNING Ahazard that could result in death serious injury or substantial property damage amp CAUTION Ahazard that could result in minor personal injury or property damage NOTE is used to notify people of important installation operation or maintenance information A warnine Explosive Fuel can cause fires and severe burns M44 Do not fill fuel 4 tank while engine is hot or running 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 Spilled fuel could ignite if it comes in contact with hot parts or sparks from ignition Never use ga
9. ards removed NOTE Do not crank engine continuously for more than 10 seconds Allow a 60 second cool down period between starting attempts Failure to follow these guidelines can burn out starter motor NOTE Upon start up a metallic ticking may occur Run engine for 5 minutes If noise continues run engine at mid throttle for 20 minutes If noise persists take engine to your local Kohler authorized dealer 1 Place throttle control midway between slow and fast positions Place choke control into ON position 2 Turn key switch to START position Release switch as soon as engine starts If starter does not turn engine over shut off key switch immediately Do not make further attempts to start engine until condition is corrected Do not jump start See your Kohler authorized dealer for trouble analysis 3 Cold engine Gradually return choke control to OFF position after engine starts and warms up Engine equipment may be operated during warm up period but it may be necessary to leave choke partially on until engine warms up Warm engine return choke to OFF position as soon as engine starts 4 KohlerEngines com Cold Weather Starting Hints 1 Use proper oil for temperature expected 2 Disengage all possible external loads 3 Use fresh winter grade fuel Winter grade fuel has higher volatility to improve starting Stopping 1 If possible remove load by disengaging all PTO driven attachments
10. ce new filter in shallow pan with open end up Fill with new oil until oil reaches bottom of threads Allow 2 minutes for oil to be absorbed by filter material 4 Apply a thin film of clean oil to rubber gasket 5 6 on new filter Refer to instructions on oil filter for proper installation Fill crankcase with new oil Level should be at top of indicator on dipstick Reinstall oil fill cap dipstick and tighten securely Start engine check for oil leaks Stop engine correct leaks Recheck oil level Dispose of used oil and filter in accordance with local ordinances Oil Sentry if equipped This switch is designed to prevent engine from starting in a low oil or no oil condition Oil Sentry may not shut down a running engine before damage occurs In some applications this switch may activate a warning signal Read your equipment manuals for more information KohlerEngines com Fuel Recommendations A WARNING Explosive Fuel can cause fires and severe burns LT x A Do not fill fuel tank while engine is hot or running 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 Spilled fuel could ignite if it comes in contact with hot parts or sparks from ignition Never use gasoline as a cleaning agent NOTE E15 E20 and E8
11. erformed by a Kohler authorized dealer found at KohlerEngines com or 1 800 544 2444 U S and Canada Maintenance Schedule Weekly e Check heavy duty air cleaner element Every 25 Hours or Annually e Service replace low profile precleaner Every 100 Hours or Annually e Replace low profile air cleaner element e Change oil e Remove cooling shrouds and clean cooling areas e Check oil cooler fins clean as necessary if equipped Every 200 Hours e Change oil filter e Replace fuel filter Every 250 Hours e Replace heavy duty air cleaner element and check inner element Every 500 Hours e Replace heavy duty air cleaner inner element e Replace spark plugs and set gap Every 500 Hours e Have crankshaft spline lubricated 1 Perform these procedures more frequently under severe dusty dirty conditions 2 Have a Kohler authorized dealer perform this service Oil Recommendations Check Oil Level Before working on engine or equipment disable engine as follows 1 Disconnect spark plug lead s 2 Disconnect negative battery cable from battery We recommend use of Kohler oils for best performance Other high quality detergent oils including synthetic of API American Petroleum Institute service class SJ or higher are acceptable Select viscosity based on air temperature at time of operation as shown in table below 10W 30 SAE
12. s com 24 590 27 Rev A
13. soline as a cleaning agent A WARNING Carbon Monoxide can cause severe nausea fainting or death Avoid inhaling exhaust fumes Engine exhaust gases contain poisonous carbon monoxide Carbon monoxide is odorless colorless and can cause death if inhaled A warnine Accidental Starts can cause severe injury or death rr Disconnect and ground spark plug lead s before servicing Before working on engine or equipment disable engine as follows 1 Disconnect spark plug lead s 2 Disconnect negative battery cable from battery A WARNING Rotating Parts can cause severe injury Stay away while A cauTION Electrical Shock can cause injury Do not touch wires while engine is running engine is in operation Keep hands feet hair and clothing away from all moving parts to prevent injury Never operate engine with covers shrouds or guards removed A WARNING Hot Parts can cause severe burns ill Gy Do not touch i engine while operating or just after stopping Never operate engine with heat shields or guards removed California Proposition 65 Warning Engine exhaust from this product contains chemicals known to State of California to cause cancer birth defects or other reproductive harm KohlerEngines com 24 590 27 Rev A
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