ECH630-ECH749, CH735/CH26, CH745 ECV630
Contents
1. KOHLER Command PRO ECH630 ECH749 CH735 CH26 CH745 ECV630 ECV749 CV735 CV745 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 28 Rev Engine Model Specification Serial Number Purchase Date KohlerEngines com Safety Precautions 4 WARNING Ahazard that could result in death serious injury or substantial property damage A CAUTION A hazard that could result in minor personal injury or property damage NOTE is used to notify people of important installation operation or maintenance information Explosive Fuel can cause fires and severe burns 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 High Pressure Fluid2. EFI fuel filter Every 200 Hours e Change oil filter e Replace spark plugs and set gap Every 300 Hours e Replace heavy duty air cleaner element and check inner element Every 600 Hours e Replace heavy duty air cleaner inner element 1 Perform these procedures more frequently under severe dusty dirty conditions Oil Recommendations Check Oil Level We recommend use of Kohler oils for best NOTE To prevent extensive engine wear or performance Other high quality detergent damage never run engine with oil level oils including synthetic of API American below or above operating range Petroleum Institute service class SJ or higher are acceptable Select viscosity based on air temperature at time of operation as shown in table below 24 590 28 Rev KohlerEngines com indicator on dipstick Ensure engine is cool Clean oil fill dipstick areas of any debris 1 Remove dipstick wipe oil off a Push on cap reinsert dipstick into tube press completely down or b Threaded 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 and secure dipstick 24 590 28 Rev Change Oil and Filter Change oil while engine is warm 1 Clean area around oil fill cap dipstick and drain plug
3. Remove drain plug and oil fill cap 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 Reinstall drain plug Torque to 10 ft Ib 13 6 N m Place 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 Apply a thin film of clean oil to rubber gasket on new filter Refer to instructions on oil filter for proper installation 6 Fill crankcase with new oil Level should be at top of indicator on dipstick 7 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 AS oo D Wu CO 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 A WARNING Explosive Fuel can cause fires and severe burns 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 uno
4. Engines com 24 590 28 Rev ET a E Air Cleaner A B Inner Element C Retaining Clip E End Cap F Inlet Screen E ER SECH a a Oil Fill Dipstick M Fuel Filter eE Paper Element U Wing Nut 24 590 28 Rev J N R V G Filter Minder K Oil Cooler TE Low Profile Air W Air Cleaner Air Cleaner Cover Knob KohlerEngines com uia D H L T X F Ke pon T be i DU we a f Dust Ejector Valve D D Oil Filter Air Cleaner Base Element Cover Y Spark Plug Z Dipstick AA Ejector Area IR Oil Drain Plug 24 590 28 Rev 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 Check that air cleaner components and all shrouds equipment covers and guards are in place and securely fastened wo oo aN Wu Check spark arrestor if equipped 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 p
5. arts to prevent injury Never operate engine with covers shrouds or guards removed NOTE To prime a dry fuel system turn key switch to ON position for one minute Allow fuel pump to cycle and prime system Turn key switch OFF 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 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 NOTE NOTE esch Place throttle control midway between slow and fast positions 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 AS 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 2 If equipped move throttle control to slow or idle position stop engine 3 If equipped close fuel shut off valve Angle of Ope
6. ccupied 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 E85 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 Gasoline up to 10 ethyl alcohol 90 unleaded is acceptable Methyl Tertiary Butyl Ether MTBE and unleaded gasoline blend max 15 MTBE by volume are approved Do not add oil to gasoline Do not overfill fuel tank Do not use gasoline older than 30 days Fuel Line High pressure fuel line meeting SAE R9 standard must be installed on Kohler Co engines equipped with an EFI system Spark Plugs amp caution Electrical Shock can cause injury Do not touch wires while engine is running Clean out spark plug recess Remove plug and replace 1 Check gap using wire feeler gauge Adjust gap see specification table for adjustment 2 Reinstall plug into cylinder head 3 Torque plug to 20 ft Ib 27 N m Jump Starting Follow all safety guidelines and procedures provided by battery manufacturer and or original equipment manufacturer OEM Failure to follow proper procedures may result in serious personal injury and or non warrantable da
7. ent 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 4 Check all parts for wear cracks or damage and that ejector area is clean 5 Install new element s NOTE 24 590 28 Rev KohlerEngines com 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 Hot Parts can cause severe burns Do not touch engine while operating or just after stopping 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 wirin
8. g 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 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 Disconnect negative battery cable Store engine in a clean dry place AS gt A CG SJ 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 Broken Dirty Faulty Problem No Improper DirtIn Fusible Debris Incorrect Engine Dirty Air Spark Fuel Fuel FuelLine Link Screen OilLevel Overload Cleaner Plug Will Not Start High Fuel Consumption Engine Specifications ECV630 ECH650 3 2 in 42 4 cu in ECV650 1180 mm 694 cc ECH680 ECV680 2 72 in ECH730 69 mm ECV730 45 6 c
9. mage to engine s EFI components Electronic Fuel Injection EFI System EFI is an electronically controlled fuel management system which is monitored by an Electronic Control Unit ECU A Malfunction Indicator Light MIL will illuminate if problems or faults are detected Servicing by a Kohler authorized dealer is necessary Fuel System Components High pressure components inside fuel pump module are not serviceable Engines are equipped with a special EFI fuel filter See Maintenance Schedule KohlerEngines com 6 Fuse Replacement This engine has three 3 blade type automotive fuses Replacement fuses must have same rating as blown fuse Use fuse chart below to determine correct fuse Wire Color 2 Solid Red Wires 1 Red Wire with Black Stripe Fuse Rating 10 amp Fuse 10 amp Fuse 1 Red Wire with White Stripe 2 Purple Wires 30 amp Fuse 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 Loosen knob and remove air cleaner cover Precleaner 1 Remove precleaner from paper element 2 Replace or wash precleaner in warm water with detergent Rinse and allow to air dry 3 Saturate precleaner with new engine oll squeeze out excess oil 4 Reinstall precleaner over paper element Paper Element 1 Clean area around elem
10. ration 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 KohlerEngines com 4 Maintenance Instructions Before working on engine or equipment disable engine as follows 1 Disconnect spark plug lead s 2 Disconnect negative battery cable from battery Accidental Starts can cause severe injury or death Disconnect and ground spark 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 performed by a Kohler authorized dealer found at KohlerEngines com or 1 800 544 2444 U S and Canada Maintenance Schedule Every 25 Hours or Annually e Service replace low profile precleaner if equipped Every 100 Hours or Annually e Change oil e Replace low profile air cleaner element e Remove and clean shrouds and cooling areas e Check oil cooler fins clean as necessary if equipped Every 150 Hours e Check heavy duty filter minder e Inspect heavy duty air filter paper element and inlet screen area Every 200 Hours e Replace unique Electronic Fuel Injection
11. s can puncture skin and cause severe injury or YP death Do not work on fuel system without proper training or safety equipment Fluid puncture injuries are highly toxic and hazardous If an injury occurs seek immediate medical attention Electrical Shock can cause injury Do not touch wires while engine is running 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 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 guards removed Accidental Starts can cause severe injury or death 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 Hot Parts can Cause severe burns Do not touch 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 Kohler
12. u in ECV740 747 cc ECH749 3 27 in ECV749 83 mm CH735 CH26 CV735 2 6in 44 2 cu in CH745 67 mm 725CC CV745 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 ECH630 ECH749 ECV630 ECV749 CH735 CHZ26 CH745 CV735 and CV745 is EM O2S ECM MPI 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 KohlerEngines com 24 590 28 Rev
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