Kohler KT17 User's Manual
Contents
1. Stop engine before filling fuel tank Stay away while engine is in operation 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 or running since spilled fuel could ignite if it comes in contact with hot parts or sparks from ignition Do not start the engine near spilled fuel Never use gasoline as a cleaning agent Rotating Parts Keep hands feet hair and clothing away from all moving parts to prevent injury Never operate the engine with covers shrouds or guards removed i Electrical Shock can cause injury Do not touch wires while engine is running Electrical Shock Never touch electrical wires or components while the engine is running They can be sources of electrical shock 4 amp WARNING NE Hot Parts can cause severe burns Do not touch engine while operating or just after stopping Hot Parts Engine components can get extremely hot from operation To prevent severe burns do not touch these areas while the engine is running or immediately after it is turned off Never operate the engine with heat shields or guards removed Safety Information Cont WARNING WARNING WARNING Accidental Starts can cause severe injury or death2. Carbon Monoxide can cause severe nausea fainting or death Explosive Gas can cause fires and severe acid burns Charge battery only in a well ventilated area Keep sources of ignition away Disconnect and ground spark plug lead before servicing Do not operate engine in closed or confined area Accidental Starts Lethal Exhaust Gases Explosive Gas Before servicing the engine or Engine exhaust gases contain Batteries produce explosive equipment always disconnect the poisonous carbon monoxide hydrogen gas while being charged spark plug leads to prevent the Carbon monoxide is odorless To prevent a fire or explosion engine from starting accidentally colorless and can cause death if charge batteries only in well Ground the leads to prevent sparks inhaled Avoid inhaling exhaust ventilated areas Keep sparks open that could cause fires Make sure fumes and never run the engine in flames and other sources of the equipment is in neutral a closed building or confined area ignition away from the battery at all times Keep batteries out of the California reach of children Remove all Proposition 65 Warning jewelry when servicing batteries Engine exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm Before disconnecting the negative ground cable make sure all switches are OFF If ON a spark will occur at the ground cable ter
3. application there may be more stringent restrictions engine with heat shields or guards removed regarding the angle of operation Engine Speed NOTE Do not operate this engine continuously at NOTE Do not tamper with the governor setting to angles exceeding 30 in any direction increase the maximum engine speed Engine damage could result from insufficient Overspeed is hazardous and will void the lubrication engine warranty Maintenance Instructions A WARNING Accidental Starts Before servicing the engine or equipment always disconnect the spark plug leads to prevent the engine from starting accidentally Ground the leads to prevent sparks that could cause fires Make sure the equipment is in neutral Maintenance Schedule These required maintenance procedures should be performed at the frequency stated in the table They should also be included as part of any seasonal tune up Maintenance Required As Specified e Change oil on pages 8 amp 9 e Change oil filter e Fill fuel tank e Check oil level e Check air cleaner for dirty loose or damaged parts e Check air intake and cooling areas clean as necessary Every 25 Hours e Service precleaner element Every 50 Hours e Remove cooling shrouds and clean cooling areas Every 100 Hours e Service air cleaner element eave e Check spark plug condition and gap Have bendix starter drive serviced Have breaker points checked Have ignition timing checked
4. Have valve and tappet clearance checked Have cylinder heads serviced Perform these maintenance procedures more frequently under extremely dusty dirty conditions 2Have a Kohler Engine Service Dealer perform this service 3250 hours when leaded gasoline is used Daily or Before Starting Engine Annually or Every 500 Hours Check Oil Level The importance of checking and maintaining the proper oil level in the crankcase cannot 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 grass clippings etc out of the engine clean the area around the oil fill cap or dipstick before removing it 3 Remove the dipstick wipe oil off Reinsert the dipstick and push it all the way down into the tube 4 Remove the dipstick and check the oil level The oil level should be up to but not over the F mark on the dipstick See Figure 5 m F Mark Operating Range Figure 5 Oil Level Dipstick 5 If the level is low add oil of the proper type up to the F mark on the dipstick Refer to Oil Type on page 4 Always check the level with the dipstick before adding more oil NOTE To prevent extensive engine wear or damage always maintain the proper oil level in the crankcase Never operate the engine with the oil leve
5. NOTE KT17 and KT19 engines with fixed jet carburetors operating at altitudes above approximately 6000 ft may require a special high altitude main jet See your Kohler Engine Service Dealer for further information Troubleshooting If engine troubles are experienced that appear to be fuel system related check the following areas before adjusting the carburetor e Make sure the fuel tank is filled with clean fresh gasoline e Make sure the fuel tank cap vent is not blocked and that it is operating properly e lf the fuel tank is equipped with a shutoff valve make sure it is open e If the engine is equipped with an in line fuel filter make sure it is clean and unobstructed Replace the filter if necessary e Make sure fuel is reaching the carburetor This includes checking the fuel lines and fuel pump for restrictions or faulty components replace as necessary e Make sure the air cleaner element is clean and all air cleaner element components are fastened securely If after 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 NOTE Carburetor adjustments should be made only after the engine has warmed up Kohler Carburetor Adjustment 1 With the engine stopped turn the low idle fuel and main fuel adjusting needles in clockwise until they bottom lightly NOTE The tip of the idle fuel and main fuel
6. The following items are not covered by this warranty Engine accessories such as fuel tanks clutches transmissions power drive assemblies and batteries unless supplied or installed by Kohler Co These are subject to the warranties if any of their manufacturers WE SHALL NOT BE LIABLE FOR SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND including but not limited to labor costs or transportation charges in connection with the replacement or repair of defective parts ANY IMPLIED OR STATUARY WARRANTIES INCLUDING WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY LIMITED TO THE DURATION OF THIS WRITTEN WARRANTY We make no other express warranty nor is anyone authorized to make any in our behalf Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state TO OBTAIN WARRANTY SERVICE Purchaser must bring the engine to an authorized Kohler service facility For the facility nearest you consult your Yellow Pages or write Kohler Co Attn Engine Warranty Service Dept Kohler Wisconsin 53044 ENGINE DIVISION KOHLER CO KOHLER WISCONSIN 53044 15 KOHLER engmes ENGINE DIVISION KOHLER CO KOHLER WISCONSIN 53044 FOR
7. adjusting needles are tapered to critical dimensions Damage to the needles and the seats in carburetor body will result if the needles are forced 2 Preliminary Settings Turn the adjusting needles out counterclockwise from lightly bottomed to the positions shown in the chart on page 12 11 Kohler Adjustable Jet Low idle Main Fuel gt 172 tums 3 Start the engine and run at half throttle for 5 to 10 minutes to warm up The engine must be warm before making final settings steps 4 5 6 and 7 4 Main Fuel Needle Setting This adjustment is required for adjustable main jet carburetors only If the carburetor is a fixed main jet type refer to Walbro adjustment Turn the main fuel adjusting needle out counterclockwise from the preliminary setting until the engine speed decreases rich Note the position of the needle Now turn the adjusting needle in clockwise The engine speed may increase then it will decrease as the needle is turned in lean Note the position of the needle Set the adjusting needle midway between the rich and lean settings 5 Low Idle Speed Setting Place the throttle control into the idle or slow position Set the low idle speed to 1200 RPM 75 RPM by turning the low idle speed adjusting screw in or out Check the speed using a tachometer NOTE The actual low idle speed depends on the application refer to equipment manufacturer s recommendatio
8. should be 90 octane minimum Unleaded gasoline is recommended as it leaves less combustion chamber deposits Leaded gasoline may be used in areas where unleaded is not available and exhaust emissions are not regulated Be aware however that the cylinder head will require more frequent service Gasoline Alcohol blends Gasohol up to 10 ethy alcohol 90 unleaded gasoline by volume is approved as a fuel for Kohler engines Other gasoline alcohol blends are not approved Gasoline Ether blends Methyl Tertiary Butyl Ether MTBE and unleaded gasoline blends up to a maximum of 15 MTBE by volume are approved as a fuel for Kohler engines Other gasoline ether blends are not approved 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 decal or decals affixed to the engine shrouding Include letter suffixes if there are any Record your engine identification numbers on the identification label below Figure 4 for future reference MODEL NO SPEC NO DISPL CC SERIAL NO REFER TO OWNER S MANUAL FOR SAFETY MAINTENANCE SPECS AND ADJUSTMENTS FOR SALES AND SERVICE IN US CANADA CALL 1 800 544 2444 KOHLERENGINES KOHLER CO KOHLER WI USA Figure 4 Engine Identification Label Operating Instructions Also read the operating instructions of th
9. or more use the following storage procedure 1 Clean the exterior surfaces of the engine 2 Change the oil and filter while the engine is still warm from operation See Change Oil and Oil Filter on page 8 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 system Fill the fuel tank with clean fresh gasoline Run the engine for 2 3 minutes to get stabilized fuel into the carburetor To empty the system drain the fuel tank and carburetor or run the engine until the fuel tank and system are empty 4 Remove the spark plugs Add one tablespoon of engine oil into each spark plug hole Install plugs but do not connect the plug leads Crank the engine two or three revolutions 5 Remove the spark plugs Cover one spark plug hole with your thumb and turn the engine over until the piston is at the top of its stroke Pressure against thumb is greatest Repeat on other side Reinstall the plugs but do not connect the plug leads 6 Store the engine in a clean dry place The engine Specification Model and Serial Numbers are required when ordering replacement parts from your Kohler Engine Service Dealer These numbers are found on the identification plate which is affixed to the engine shrouding Include letter suffix
10. out excess water do not wring Air dry 4 Saturate precleaner in clean fresh engine oil and squeeze out excess oil 5 Reinstall precleaner over paper element 6 When precleaner replacement is necessary always use genuine Kohler parts Service Paper Element Every 100 hours of operation more often under extremely dusty or dirty conditions check the paper element Replace the element as necessary 1 Remove the precleaner if so equipped from the paper element 2 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 3 With air cleaner disassembled check the base plate Make sure it is secured and not bent or damaged Also check the element cover seals and breather tube for damage or improper fit Replace all damaged components NOTE Operating the engine with damaged or loose components could allow unfiltered air into the engine causing premature wear and failure 4 Reinstall the paper element 5 If so equipped install the precleaner washed and oiled over paper element SRS I EET VESENER GE ESN EE 10 6 Reinstall element cover seals air cleaner cover and wing nuts Tighten wing nuts 1 2 to 1 full turn after nuts contacts cover Do not overtighten 7 When air cleaner element replacement is necessary al
11. the engine to check for leaks Stop the engine allow a minute for the oil to drain down and recheck the level on the dipstick Make sure oil level is up to but not over the F mark on the dipstick Figure 6 Oil Filter and Optional Oil Sentry Switch Service Precleaner and Air Cleaner Element This engine is equipped with a replaceable high density paper air cleaner element Some engines are also equipped with an oiled foam precleaner which surrounds the paper element See Figure 7 Element Element Cover Seals Cover Precleaner Paper Air Cleaner Element Base Figure 7 Air Cleaner Housing Components Check the air cleaner daily or before starting the engine Check for buildup of dirt and debris around the air cleaner system Keep this area clean Also check for loose or damaged components Replace all bent or damaged air cleaner components NOTE Operating the engine with loose or damaged air cleaner components could allow unfiltered air into the engine causing premature wear and failure Service Precleaner If so equipped wash and reoil the precleaner every 25 hours of operation more often under extremely dusty or dirty conditions 1 Remove wing nuts air cleaner cover element cover seals and element cover 2 Remove precleaner from paper element Wash the precleaner in warm water with detergent 3 Rinse the precleaner thoroughly until all traces of detergent are eliminated Squeeze
12. warms up pping If possible remove the load by disengaging all PTO attachments Place the throttle control midway between the stop and fast positions Allow the engine to run for a minimum of 15 seconds then stop the engine NOTE Minimum engine speed of 2400 RPM Battery A 12 volt battery is normally used Refer to the operating instructions of the equipment this engine powers for specific battery requirements If the battery charge is not sufficient to crank the engine recharge the battery see page 11 Operating Cooling Optional spark arrestor mufflers are available from NOTE If debris builds up on the grass screen or your Kohler Engine Service Dealer Check your local other cooling air intake areas stop the engine laws and statutes regarding engine spark arrestor immediately and clean Operating the engine muffler requirements with blocked or dirty air intake and cooling areas can cause extensive damage due to Angle of Operation overheating This engine will operate continuously at angles up to 30 in any direction Check oil level to assure A WARNING Hot Parts crankcase oil level is at the F mark Engine components can get extremely hot from operation To prevent severe burns do not touch Refer to the operating instructions of the equipment these areas while the engine is running or this engine powers Because of equipment design or immediately after it is turned off Never operate the
13. 0 025 in 0 65 mm Gap Figure 8 Servicing Spark Plug Battery Charging A WARNING Explosive Gas Batteries produce explosive hydrogen gas while being charged To prevent a fire or explosion charge batteries only in well ventilated areas Keep sparks open flames and other sources of ignition away from the battery at all times Keep batteries out of the reach of children Remove all jewelry when servicing batteries Before disconnecting the negative ground cable make sure all switches are OFF If ON a spark will occur at the ground cable terminal which could cause an explosion if hydrogen gas or gasoline vapors are present Fuel Filter Some engines are equipped with an in line fuel filter Periodically inspect the filter and replace when dirty Use a genuine Kohler filter Carburetor Troubleshooting and Adjustments KT17 and KT19 engines are equipped with one of two basic types of carburetors Kohler or Walbro fixed main jet or adjustable main jet The carburetor is designed to deliver the correct fuel to air mixture to the engine under all operating conditions The main fuel and idle fuel needles on adjustable jet carburetors are set at the factory and normally do not require further adjustment On fixed jet carburetors the low idle fuel needle is also set at the factory and normally does not need further adjustment The main fuel jet is calibrated and installed at the factory and is not adjustable
14. KOHLER engines OWNERS MANUAL ODELS KI17 KI19 47 hp 19 hp SERIES with Full Pressure Lubrication operating and maintenance INSTTUCTIONS Congratulations You have selected a fine four cycle twin cylinder air cooled engine Kohler 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 e Parts subject to the most wear and tear like cylinders crankshaft and camshaft are made from precision formulated cast iron Because the cast iron cylinders can be rebored these engines can last even longer Kohler engines are easy to service All routine service areas like the dipstick oil filter breaker points air cleaner spark plugs and carburetor are easily and quickly accessible Every Kohler engine is backed by a worldwide network of over 10 000 distributors and dealers Service support is just a phone call away Call 1 800 544 2444 U S amp Canada for Sales amp Service assistance To keep your engine in top operating condition follow the maintenance procedures in this manual Safety Information For Your Safety These precautions should be followed at all times Failure to follow these precautions could result in injury to yourself and others WARNING 4 amp WARNING AG Rotating Parts can cause severe injury Explosive Fuel can cause fires and severe burns
15. RECOMMENDED SAE VISCOSITY GRADES lt 0 2 30 20 TEMPERATURE RANGE EXPECTED BEFORE NEXT OIL CHANGE Figure 2 Viscosity Grades Table 4 Figure 3 Oil Container Logo Refer to Maintenance Instructions beginning on page 7 for detailed oil check oil change and oil filter change procedures Fuel Recommendations IN WARNING 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 or running since spilled fuel could ignite if it comes in contact with hot parts or sparks from ignition Do not start the engine near spilled fuel Never use gasoline as a cleaning agent General Recommendations Purchase gasoline in small quantities and store in clean approved containers A container with a capacity of 2 gallons or less with a pouring spout is recommended Such a container is easier to handle and helps eliminate spillage during refueling Do not use gasoline left over from the previous season to minimize gum deposits in your fuel system and to insure easy starting Do not add oil to the gasoline Do not overfill the fuel tank Leave room for the fuel to expand Fuel Type For best results use only clean fresh unleaded gasoline with a pump sticker octane rating of 87 or higher In countries using the Research method it
16. SALES AND SERVICE INFORMATION IN U S AND CANADA CALL 1 800 544 2444 FORMNO TP 2107 C ISSUED 4 87 REVISED 12 95 MAILED LITHO IN U S A
17. bs kilograms 128081 sen 128 58 1 Oil Capac nnna U S pints liters 15 1P pennen 1 5 1 4 Spark Plug Gap eseese inches millimeters 0 025 0 65 0 025 0 65 Spark Plug Type svesssseavnvaasarsnvrn Champion or Equiv RVISYG send RV15YC Breaker Point Gap Nominal inches millimeters 0 020 0 508 ow 0 020 0 508 An additional pint 0 5 L required when oil filter is changed For best results fill to F mark on dipstick as opposed to adding a given quantity of oil After setting point gap start engine and check timing using a timing light adjust points as necessary LIMITED 1 YEAR ENGINE WARRANTY We warrant to the original consumer that each new engine sold by us will be free from manufacturing defects in materials or workmanship in normal service for a period of one 1 year from date of purchase provided it is operated and maintained in accordance with Kohler Co s instructions and manuals Our obligation under this warranty is expressly limited at our option to the replacement or repair at Kohler Co Kohler Wisconsin 53044 or ata service facility designated by us of such part or parts as inspection shall disclose to have been defective EXCLUSIONS This warranty does not apply to defects caused by casualty or unreasonable use including faulty repairs by others and failure to provide reasonable and necessary maintenance
18. e choke control into the on position On a Warm Engine Normal Operating Temperatures Place the throttle control midway between the slow and fast positions Place the choke control into the off position 2 Sto 1 Activate the starter switch Release the switch as soon as the engine starts NOTE After starting the engine it may be necessary to leave the choke partially on for a few minutes before moving it to the off position 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 the starter motor NOTE If the engine develops sufficient speed to disengage the starter but does not keep running a false start the engine rotation must be allowed to come to a complete stop before attempting to restart the engine If the start is engaged while the flywheel is rotating the starter pinion and flywheel ring gear may clash resulting in damage to the starter 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 below See your Kohler Engine Service Dealer for trouble analysis On a Cold Engine Gradually return the choke control to the off position after the engine starts and
19. e equipment this engine powers Pre Start Checklist d E O 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 guards are in place and securely fastened Check that any clutches or transmissions are disengaged or placed in neutral This is especially important on equipment with hydrostatic drive The shift lever must be exactly in neutral to prevent resistance which could keep the engine from starting A WARNING Lethal Exhaust Gases Engine exhaust gases contain poisonous carbon monoxide Carbon monoxide is odorless colorless and can cause death if inhaled Avoid inhaling exhaust fumes and never run the engine in a closed building or confined area Cold Weather Starting Hints 1 Be sure to use the proper oil for the temperature expected See Figure 2 on page 4 Declutch all possible external loads Set speed control at part throttle position Awarm battery has much more starting capacity that a cold battery Use fresh winter grade fuel NOTE Winter grade gasoline has a higher volatility to improve starting Do not use gasoline left over from summer Starting 1 On a Cold Engine Place the throttle control midway between the slow and fast positions Place th
20. es if there are any See Engine Identification Numbers on page 5 Always insist on genuine Kohler parts All genuine Kohler parts meet strict standards for fit reliability and performance Major Repair Major repair information is available in Kohler Engine Service Manuals However major repair generally requires the attention of a trained mechanic and the use of special tools and equipment Your Kohler Engine Service Dealer has the facilities training and genuine Kohler replacement parts necessary to perform this service For Sales amp Service assistance call 1 800 544 2444 U S amp Canada or contact your Kohler Engine Dealer or Service Distributor he s in the Yellow Pages under Engines Gasoline Model Designation Model KT17S for example KT indicates K Series twin cylinder engine 17 indicates horsepower Letter suffixes following the model numbers designates a specific version as follows Suffix Designates EP Generator Set Q Quiet Model S Electric Start G Tapered Crankshaft Generator Application Specifications Mode ve teenies KAT goes KT19 BOG s rede inches millimeters 312 192 aner 3 12 79 2 TE ee inches millimeters 2 75 69 85 mmerrnnrrrnrr 3 06 78 0 Displacement cubic inches cubic centimeters 42 18 691 3 46 98 769 8 Power 3600 RPM horsepower kilowatts 4 RE 19 14 2 Weg 4 l
21. ettings Turn the adjusting needle s out counterclockwise from lightly bottomed as follows or to the rich side of adjustment Walbro Fixed Jet Low Idle 1 1 4 turns 1 1 4 turns Walbro Adjustable Jet J iwn KT17 1 1 4 turns KT19 1 1 4 turns Main Fuel 1 1 4 turns 3 Start the engine and run at half throttle for five to ten minutes to warm up The engine must be warm before making final settings 4 Main Fuel Needle Setting This adjustment is required only for adjustable main jet carburetors If the carburetor is a fixed main jet type disregard this setting Place the throttle into the fast position Turn the adjusting needle in clockwise The engine speed may increase then it will decrease as the needle is turned in lean Note the position of the needle Back the needle out approximately 1 4 turn See Figure 11 below for best main fuel performance Back out Appx 1 8 to 1 4 turn Figure 11 Optimum Main Fuel Setting Low Idle Speed Setting Place the throttle control into the idle or slow position Set the low idle speed to 1200 RPM 75 RPM by turning the low idle speed adjusting screw in or out Check the speed using a tachometer NOTE The actual low idle speed depends on the application Refer to the equipment manufacturer s instructions for specific low idle speed settings To ensure best results when setting the low idle fuel needle the low idle speed
22. ing more oil NOTE To prevent extensive engine wear or damage always maintain the proper oil level in the crankcase Never operate the engine with the oil level below the L mark or over the F mark on the dipstick 4 Reinstall the oil fill cap Make sure it is tightened securely Change Oil Filter Some engines are equipped with an oil filter Replace the oil filter every other oil change in accordance with the Oil Change Intervals table on page 8 Always use a genuine Kohler oil filter Part No 52 050 02 and replace as follows 1 Drain the oil from the engine crankcase 2 Allow the oil filter to drain 3 Remove the old filter and wipe the filter adapter gasket surface 4 Place a new replacement filter in a shallow pan with the open end up Pour new oil of the proper type in through the threaded center hole Stop pouring when the oil reaches the bottom of the threads 5 Puta drop of oil on your fingertip and wipe it on the rubber gasket Allow a minute or two for the oil to be absorbed by the filter material then install it on the engine Turn the oil filter clockwise until rubber gasket contacts the filter adapter then tighten filter an additional 1 2 turn 6 Reinstall drain plug Make sure it is tight 7 Fill the crankcase with new oil of the proper type to the F mark on the dipstick Add an additional 1 2 pint of oil for the filter capacity See Specifications on page 15 8 Test run
23. l below the L mark or over the F mark on the dipstick Oil Sentry Some engines are equipped with an optional Oil Sentry oil pressure switch If the oil pressure decreases below an acceptable level the Oil Sentry will either shut off the engine or activate a warning signal depending on the application NOTE Make sure the oil level is checked BEFORE EACH USE and is maintained up to the F mark on the dipstick This includes engines equipped with Oil Sentry Change Oil and Oil Filter Change Oil For a new engine change oil after the first 5 hours of operation Thereafter change oil as shown in the Oil Change Intervals table Oil Change Intervals interval Temperature ABOVE 32 F 0 C With Filter Without Filter With Filter Without Filter Multiviscosity NE 25 Hours NOTE 25 hours for continuous and or heavy duty operation SAE 30 Multiviscosity Change the oil while the engine is still warm The oil will flow freely and carry away more impurities Make sure the engine is level when filling checking or changing the oil Change the oil as follows 1 Remove the oil drain plug and oil fill cap Tilt the engine slightly towards the oil drain to obtain better drainage 2 Reinstall the drain plug Make sure it is tightened securely 3 Fill with new oil of the proper type to the F mark on the dipstick Always check the level on the dipstick before add
24. minal which could cause an explosion if hydrogen gas or gasoline vapors are present Throttle Control Optional Control Panel Optional Ignition Choke Coil Control Optional Spark Plug Blower Housing Air Cleaner Breaker Points Oil Fill Dipstick Muffler Muffler Air Intake Starter Solenoid Screen Optional Figure 1 Typical KT Engine Oil Recommendations Using the proper type and weight of oil in the crankcase is extremely important So is checking oil daily and changing oil and filter regularly Failure to use the correct oil or using dirty oil causes premature engine wear and failure Before each start make sure the crankcase is filled with proper type and quantity of oil Oil Type Use high quality detergent oil of API American Petroleum Institute service class SG or SH Select Cooling Fins Electric Oil Sump Starter Oil Drain Straight 30 weight Kohler Magnum oil is preferred SAE 10W 30 oil is not recommended above 32 F Using this oil substantially increases oil consumption and combustion chamber deposits NOTE Using other than service class SG or SH oil or extending oil change intervals longer than recommended can cause engine damage A logo or symbol on oil containers identifies the API service class and SAE viscosity grade See Figure 3 the viscosity based on the air temperature at the time SER Vi Ca of operation as shown in the following table Q N
25. must not exceed 1500 RPM Low Idle Fuel Needle Setting Place the throttle into the idle or slow position Turn the adjusting needle in clockwise The engine speed may increase then it will decrease as the needle is turned in lean Note the position of the needle Back the needle out approximately 1 8 to 1 4 turn See Figure 12 below for best low idle fuel performance Back out Appx 1 8 to 1 4 Figure 12 Optimum Low Idle Fuel Setting 13 Troubleshooting When troubles occur be sure to check the simple causes which at first may seem to 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 Incorrect Engine Dirty Air Faulty Problem Fuel Fuel Fuel Line Grass Screen Oil Level Overloaded Cleaner Spark Plug Will Not Start Hard Starting Stops Suddenly Lacks Power e Operates Erratically Knocks or Pings Skips or Misfires e Backfires Overheats High Fuel Consumption e Storage Parts Ordering If the engine will be out of service for two months
26. ns The recommended low idle speed for basic engines is 1200 RPM To ensure best results when setting the low idle fuel needle the low idle speed must not exceed 1500 RPM 6 Low Idle Fuel Needle Setting Place the throttle into the idle or slow position Turn the low idle fuel adjusting needle out counterclockwise from the preliminary setting until the engine speed decreases rich Note the position of the needle Now turri the adjusting needle in clockwise The engine speed may increase then it will decrease as the needle is turned in lean Note the position of the needle Set the adjusting needle midway between the rich and lean settings 12 Adjust To Midpoint Figure 9 7 Recheck the idle speed using a tachometer Readjust the speed as necessary Walbro Carburetor Adjustment In general turning the adjusting needles in clockwise decreases the supply of fuel to the carburetor This gives a leaner fuel to air mixture Turning the adjustment needles out counterclockwise increases the supply of fuel to the carburetor Low Idle Fuel Needle Main Fuel Needle Figure 10 NOTE The tip of the low idle fuel and main fuel adjusting needles are tapered to critical dimensions Damage to the needles and the seats in carburetor body will result if the needles are forced 1 With the engine stopped turn the adjusting needle s in clockwise until it bottoms ightly 2 Preliminary S
27. ways use genuine Kohler parts Clean Air Intake Cooling Areas To ensure proper cooling make sure the grass screen cooling fins and other external surfaces of the engine are kept clean at all times Every 50 hours of operation more often under extremely dusty dirty conditions remove the blower housing and other cooling shrouds Clean the cooling fins and external surfaces as necessary Make sure the cooling shrouds are 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 Check Spark Plug Every 100 hours of operation remove the spark plugs check condition and reset gaps or replace with new plugs as necessary Use a Champion type RV15YC or equivalent spark plug 1 Before removing spark plugs clean the area around base of plugs to keep dirt and debris out of the engine 2 Remove plugs and check condition Replace plugs if worn or reuse is questionable NOTE Do not clean the spark plug in a machine using abrasive grit Some grit could remain in the spark plug and enter the engine causing extensive wear and damage 3 Check gaps using a wire feeler gauge Adjust the gaps to 0 025 in 0 65 mm by carefully bending the ground electrode See Figure 8 4 Reinstall spark plugs into the cylinder heads Torque spark plugs to 10 15 ft Ib 14 20 N m Wire Gauge Ground Electrode
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