Kohler K241 Users Manual Owner's S K241, K301, K321, & K341
Kohler Owner's Manual Single Cylinder - K241, K301, K321, K341 Kohler_Owner's_Manual_Single_Cylinder_K241_K301_K321_K341 WFMFiles.com
K321 to the manual 5eed06e3-25dc-4303-98c3-eee593ec678b
2015-01-21
: Kohler Kohler-K241-Users-Manual-219798 kohler-k241-users-manual-219798 kohler pdf
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OWNER’S MANUAL MODELS ’ K241/ K301 (10 hP) (12 hp) K321,& K341 (14 hp) (16 hP) operating & maintenance instructions Congratulations - You have selected a fine four-cycle, single 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: 0 Kohler engines are easy to service. All routine service areas (like the points, condenser, plug, and carburetor) are easily and quickly accessible. 0 air cleaner, spark L Parts subject to the most wear and tear (like the cylinders, crankshafts, and camshaft) are made from precision formulated cast iron. Because the cast iron cylinders can be rebored, these engines can last even longer. 0 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 I-800-544-2444 (U.S. & Canada) for Sales & Service assistance. To keep your engine in top operating condition, follow the maintenance procedures in this manual. Safety Precautions To insure safe operations please read the following statements and understand their meaning. Also refer to your equipment owner’s manual for other important safety information. This manual contains safety precautions which are explained below. Please read carefully. I AA WARNING Warning is used to indicate the presence of a hazard that can cause severe personal death, or substantial property damage if the warning is ignored. injury, A CAUTION Caution is used to indicate the presence of a hazard that will or can cause minor personal injury or property damage if the warning is ignored. NOTE Note is used to notify people of installation, important but not hazard-related. operation, or maintenance information that is For Your Safety! These precautions should be followed at all times. Failure to follow these precautions in injury to yourself and others. 1 A A WARNING db WARNING A # xu Rotating Parts can cause severe injury. Stop engine before filling fuel tank. Stay away while engine is in operation. A Hot Parts can cause severe burns. Do not touch engine while operating or just after stopping. 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. CAUTION Hot Parts! Engine components can get extreme/y 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. California Proposition 65 Warning I.--N..--. -..-v.. IDo not touch Wm.. ----- . . . . “‘J. 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. 2 WARNING v Explosive Fuel can cause fires and severe burns. Explosive Fuel! Gasoline is extreme/y fiammable 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 starf the engine near spilled fuel. Never use gasoline as a cleaning agent. could result Engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Safety Precautions A WARNING 3 @ , A WARNING WARNING F $5 St l 0 ( A (Cont.) : / d!? Accidental Starts can cause severe injury or death. Carbon Monoxide can cause severe nausea, fainting or death. Explosive Gas can cause fires and severe acid burns. Disconnect and ground spark plug lead before servicing. Do not operate engine in closed or confined area. Charge battery only in a well ventilated area. Keep sources of ignition away. kcidental Starts! Before servicing the engine or equipment, always disconnect the spark plug lead to prevent the engine from starting accidentally. Ground the lead to prevent sparks that could cause fires. Make sure the equipment is in neutral. 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. . 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 je we/r-y 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. 3 Ignition Spark Plug Coil Cooling Shrouds Blowe !r Air Filter ,HOUSI Air lnta Screen Horizontal Using the proper type and weight of oil in the crankcase is extremely important. So is checking oil daily and changing oil regularly. Failure to use the correct oil, or using dirty oil, causes premature engine wear and failure. Oil Type Use high quality detergent oil of API (American Petroleum Institute) service class SG or SH. Select the viscosity based on the air temperature at the time of operation as shown in the following table. 1 "F -i'O I $30 SAE 1 l---l -20 TEMPERATURE $0 -10 RANGE Figure 2. Viscosity 4 ~ 3i VISCOSITY 60 4b i, EXPECTED GRADES 8:O lb0 I 4 I $0; l$ 20 BEFORE NEXT OIL CHANGE Grades Table. / Oil Pan Shaft Engine. Oil Recommendations RECOMMENDED \ I *NOTE: Dipstick or oil fill plug is optional and may vary depending on engine specification. Figure 1. Typical Command / Oil Drain Carbur ‘etor 1 Straight 30-weight oil is preferred. SAE IOW-30 oil is not recommended above 32OF. 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. Fuel Recommendations WARNING: Explosive Fuel! A 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 starl the engine near spilled fuel. Never use gasoline as a cleaning agent. Gasoline/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 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. General Recommendations Engine Identification Purchase gasoline in small quantities When ordering parts, or in any communication involving an engine, always give the Model, Specification, and Serial Numbers of the engine. 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. Numbers 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. Do not overfill the fuel tank. Leave room for the fuel to expand. Fuel Type MODEL NO. SPEC. NO. DISPL (CC) SERIAL NO. 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 should be 90 octane minimum. REFER TO OWNER’S MANUAL FOR SAFETY, MAINTENANCE SPECS AND ADJUSTMENTS. FOR SALES AND SERVICE IN US/CANADA CALL: I-800-544-2444 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. . KOHLER CO. KOHLER, WI USA Figure 4. Engine Identification . , Label. Operating Instructions Also read the operating instructions Pre-Start Checklist l Check oil level. Add oil if low. Do not overfill. l Check fuel level. Add fuel if low. l l 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. of the equipment l this engine powers. 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. WARNING: Lethal Exhaust Gases! A 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. 5 I Cold Weather Starting Hints NOTE: Do not crank the engine continuously for more than IO 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. 1. Be sure to use the proper oil for the temperature expected. See Figure 2 on page 4. 2. Declutch all possible external loads. 3. Set speed control at part throttle position. 4. A warm battery has much more starting capacity than a cold battery. 5. 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. For a Cold Engine - Place the throttle control midway between the “slow” and “fast” positions. Place the choke control into the rron’y position. For a Warm Engine (normal operating temperatures) - Place the throttle control midway between the “slow” and “fast” positions. Place the choke into the “off” position. . 2. Start the engine as follows: For a Retractable Start Engine - SLOWLY pull the starter handle until just past compression STOP! Return starter handle, pull firmly with a smooth, steady motion to start. Pull the handle straight out to avoid excessive rope wear from the starter rope guide. Extend the starting rope periodically and check its condition. If the rope is frayed, have it replaced immediately by your Kohler Engine Service Dealer. WARNING: Accidental Starts! Before extending and checking the retractable starter rope, remove the spark plug lead to prevent the engine from starting accidentally, Make sure the equipment is in neutral. For an Electric Start Engine - Activate the starter switch. Release the switch as soon as the engine starts. 6 3. For a Cold Engine - Gradually return the choke control to the “off” position after the engine starts and warms ups. Stopping For Rope Start Engines - Place the starting rope knot in the slot in starting pulley. Wrap the rope around the pulley. Pull the starter handle with a smooth, steady motion. A 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. 1. Remove the load by disengaging attachments. ’ all PTO Move the throttle control to the ‘“slow” or 6610w” idle position. Allow the engine to run at idle for 30-60 seconds; then stop the engine. If the carburetor on the engine is equipped with a fuel solenoid, move the throttle control back up between half and full throttle just before stopping the engine. Turn ignition switch “off.” On engines so equipped, press and hold “stop” button until engine comes to a complete stop. 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 10). Operating Optional spark arrestor mufflers are available from your Kohler Engine Service Dealer. Check your local laws and statutes regarding engine spark arrestor muffler requirements. Angle of Operation This engine will operate continuously at angles up to 30°. Check oil level to assure crankcase oil level is at the ‘IF” mark. 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: Do not operate this engine continuously at angles exceeding 30” in any direction. Engine damage could result from insufficient lubrication. AA WARNING: Hot Parts! Engine components can get extreme/y 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. Engine Speed NOTE: Do not tamper with the governor setting to increase the maximum engine speed. Overspeed is hazardous and will void the engine warranty. Rope Starting Pulley is not a Drive Pulley! Do not use backup rope starting pulley as a drive pulley. Using starfing pulley as a drive could loosen flywheel fastener, resulting in bodily harm. A Cooling NOTE: If debris builds up on the grass screen or other cooling air intake areas, stop the engine immediately and clean. Operating the engine with blocked or dirty air intake and cooling areas can cause extensive damage due to overheating. WARNING: Maintenance Instructions A WARNING: Accidental Starts! . Before servicing the engine or equipment, always disconnect the spark plug lead to prevent the engine from starting accidentally. Ground the lead 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 also be included as part of any seasonal tune-up. Frequency Maintenance l Daily or Before Starting Engine l l l Every 25 Hours * l Every 50 Hours l l Every 100 Hours l l l Annually or Every 500 Hours l . l l stated in the table. They should Required Fill fuel tank. Check oil level. Check air cleaner for dirty’, loose, or damaged parts. Check air intake and cooling areas, clean as necessary’! Change oil. Service precleaner element! Check gear reduction unit. Remove cooling shrouds and clean cooling areas’. Replace air cleaner element! Check spark plug condition and gap. Have Have Have Have Have bendix starter drive serviced213. breaker points checked2. ignition timing checked2. valve and tappet clearance checked2. cylinder head serviced214. ‘Perform these maintenance procedures more frequen fly under extreme/y dusty, dirty conditions. *Have a Kohler Engine Service Dealer perform this sewice. 30r annually whichever occurs first. 4250 hours hhen leaded gasoline is used. NOTE: 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: 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 SentryTM. Change Oil 1. Make sure the engine is stopped, level, and is cool so the oil has had time to drain into the sump. For a new engine, change oil after the first 5 hours of operation. Thereafter, change oil after every 25 hours of operation. 2. To keep dirt, grass clippings, etc., out of the engine, clean the area around the oil fill tube/ dipstick before removing it. 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. 3. With threaded plug-type dipstick, remove and wipe oil off - reinsert, but do not turn plug in. To check oil level, shoulder plug on top of hole. After checking, again turn plug all the way into crankcase. With extended oil fill tube and dipstick, push dipstick all the way down in tube then take reading. 4. 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 level below the ‘IL” mark or over the “F” mark on the dipstick. Change the oil as follows: 1. To keep dirt, grass clippings, etc., out of the engine, clean the area around the drain plug and dipstick before removing it. 2. Remove the oil drain plug and dipstick. Tilt the engine slightly towards the oil drain to obtain better drainage. Be sure to allow ample time for complete drainage. 3 . Reinstall the drain plug. Make sure it is tightened securely. 4 . Fill the crankcase, with new oil of the proper type, 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. 5. Reinstall the oil fill cap or plug and tighten securely. “F” Mark 0 perating .....*...*. ....-.. ... :.:.:.:.:.:*:.:.:.: .-...*_*:m*.‘.-.*. :*:.:.:.:.:.:.:.:.: _......_. .:.:.'.‘.:.:.:.:_:.: .. __ ..... . .. ..( ,L Figure 5. Oil Level Dipstick. Oil SentryTM Some engines are equipped with an optional Oil SentryTM oil level monitor switch. If the oil level drops below an acceptable level, the Oil SentryTM will either shut off the engine or activate a warning signal, depending on the application. 8 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. 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 6. . 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. Precleaner \ Air Filter 3 . When servicing the air cleaner, check the air cleaner base. Make sure it is secured and not bent or damaged. Also check the air cleaner cover, seals and breather tube for damage or improper fit. Replace all damaged air cleaner components. Wing Nut \ Figure 6. 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 Wash and reoil the precleaner every 25 hours of operation, (more often under extremely dusty or dirty conditions). 4. Reinstall the paper element, air cleaner cover and wing nut. Wing nut must be finger tightened to l/2 to 1 full turn after nut contacts cover. Do not overtig hten. 5 . When air cleaner element replacement is necessary always 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. 1. Remove the wing nut and air cleaner cover. Every 50 hours of operation (more often extremely dusty, dirty conditions), remove housing and other cooling shrouds. Clean fins and external surfaces as necessary. the cooling shrouds are reinstalled. 2 . Remove the precleaner NOTE: from the paper element. 3 . Wash the precleaner in warm water with detergent. Rinse the precleaner thoroughly until all traces of detergent are eliminated. Squeeze out excess water (do not wring). Allow the precleaner to air dry. 4 . Saturate the precleaner with new engine oil. Squeeze out all excess oil. 5 . Reinstall the precleaner over the 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), replace the element. 1. Remove the precleaner paper element. (if so equipped) from the under the blower the cooling Make sure 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 plug, check its condition, and reset the gap or replace with a new plug as necessary. Use a Champion@ type RHIO (or equivalent) spark plug. 1 . Before removing the spark plug, clean the area around the base of the plug to keep dirt and debris out of the engine. 2 . Remove the plug and check its condition. Replace the plug 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 gap using a wire feeler gauge. Spark plug gaps are as follows: Battery/Breakerless . . .. .. ... . .. . . .035” Magneto .. . .. . . .. . . . . .. . .. . . . .. . .. . .. . . .025” Gaseous Fuel Engines . . .. . .. . . ,018” (Magneto/Battery Only) Adjust the gap as necessary by carefully the ground electrode. See Figure 7. 4. Reinstall the spark plug into the cylinder Torque the spark plug to 18-22 ft. Ibs. 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. Reduction Gear Units bending head. On engines equipped with a reduction gear unit, remove the oil plug on lower part of cover every 50 hours of operation to check oil level. With the engine level, the oil level of the unit should be up to the bottom of the oil plug hole. To add oil, remove the vented plug at the top of theunit. Use the same weight and grade of oil as used in the engine crankcase. Carburetor Troubleshooting and Adjustments NOTE: Carburetor adjustments should be made only after the engine has warmed up. Kohler K241 through K341 engines are equipped with one of two basic types of carburetors - Kohler or Walbro - fixed main jet or adjustable main jet. Ground Electrode Figure 7. Servicing Gap 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*. Spark Plug. *NOTE: 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. Troubleshooting If engine troubles are experienced that appear to be fuel system related, check the following areas before adjusting the carburetor. * 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. l l On engines equipped with an alternator charging system, disconnect plug from rectifier-regula for prior to charging battery. IO K241 through K341 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. l 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. If the fuel tank is equipped make sure it is open. with a shutoff valve, If the engine is equipped with an in-line fuel filter, make sure it is clean and unobstructed. Replace the filter if necessary. l l Make sure fuel is reaching the carburetor. This includes checking the fuel lines and fuel pump for restrictions or faulty components, replace as necessary. 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. Make sure the air cleaner element is clean and all air cleaner element components are fastened securely. *NOTE: 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. Kohler Carburetor Adjustment 1. With the engine stopped, turn the low and main fuel adjusting needles in (clockwise) until it bottoms lightly. NOTE: Low Idle 2-I/2 2-1 I2 2-l I2 2-l I2 turns turns turns turns Turn the idle fuel adjusting needle out (counterclockwise) from the preliminary setting until the engine speed decreases (rich). Note the position of the needle. Turn the adjusting needles from lightly bottomed as Kohler Adjustable K241 K301 K321 K341 6. Low Idle Fuel Needle Setting: Place the throttle into the “idle” or “slow” position. The tip of the idle fuel and main idle 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. 2. Preliminary Settings: out (counterclockwise) follows: Jet High Idle 2 turns 2 turns 3-l/4 turns 3-l I2 turns 1 Now turn the adjusting needle in (clockwise). The engine speed may increase, then it will decrease at the needle is turned in (lean). Note the position of the needle. Set the adjusting needle midway between the rich and lean settings. Lean 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. 4 The actual low idle speed depends on the application - refer to equipment manufacturer’s recommendations. 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. Adjust To Midpoint 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. Rich -0-B Place the throttle into the wide-open or “fast” position. If possible, place the engine under load. Turn the main fuel adjusting needle out (counterclockwise) from the preliminary setting until the engine speed decreases (rich). Note the position of the needle. Figure 8. 7. Recheck idle speed using a tachometer. speed as necessary. Readjust 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. 11 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 adjusting needles out (counterclockwise) increases the supply of fuel to the carburetor. 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 adjusfment is required only for adjustable main jet carburetors. If the carburetor is a fixed main jet type, disregard this setting. Idle Speed Screw 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 l/4 turn. See Figure 10 for best main fuel performance. Figure 9. Lean 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 light/y. 2. Preliminary Settings: Turn the adjusting needle(s) out (counterclockwise) from lightly bottomed as follows or to the rich side of adjustment. Walbro Fixed Jet \ \ CI Back out Appx. 118 to II4 turn. Lean I I I \I @ Figure 10. Optimum Main Fuel Setting. 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. Low Idle Walbro Adjustable I K241 K301 K321 K341 12 *NOTE: l-l I4 turns 1-l /4 turns l-l I2 turns 1 turn K241 K301 K321 K341 Low Idle I-314 I-314 I-l /a 2-112 turns turns turns turns Jet Main Idle l-l l-l l-l l-l 18 turns I8 turns I4 turns 14 turns 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 must not exceed 1500 RPM. 6. Low Idle Fuel Needle Setting: Back out Appx. 118 to l/4 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. turn. Lean Lean Back the needle out approximately l/8 to l/4 turn. See Figure 11 for best low idle fuel performance. Figure 11. Optimum Low Idle Fuel Setting. 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 Problem Fuel Will Not Start l Hard Starting l Improper Fuel Dirt In Fuel Line Dirty Grass Screen Incorrect Oil Level Engine Overloaded Ditty Air Cleaner Faulty Spark Plug 0 0 0 0 l 0 0 0 0 a 0 0 0 0 l 0 0 0 0 Operates Erratically Knocks or Pings 0 0 0 0 0 0 0 0 0 0 Skips or Misfires Backfires 0 0 0 0 0 0 0 0 0 0 Stops Suddenly Lacks Power l ~ Overheats High Fuel Consumption 0 0 l 0 l 0 0 0 13 Storage Parts Ordering If the engine will be out of service for two months or more, use the following storage procedure: 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 suffixes if there are any. See “Engine Identification Numbers” on page 5. 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” on page 8. 3 . Change oil in reduction gear unit, if so equipped. Refill with the same oil as used in engine crankcase for season of operation. See page 8. Always insist on genuine Kohler parts. All genuine Kohler parts meet strict standards for fit, reliability, and performance. Major Repair 4 . 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, run the engine until the fuel tank and system are empty. 5 . Remove the spark plug. Add one tablespoon of engine oil into the spark plug hole. Install the plug, but do not connect the plug lead. Crank the engine two or three revolutions. 6 Remove the spark plug. Cover the 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.) Reinstall the plug, but do not connect the plug lead. 7 Store the engine in a clean, dry place. 14 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 & Service assistance call I-800-544-2444 (U.S. & Canada) or contact your Kohler Engine Dealer or Service Distributor, they’re in the Yellow Pages under Engines-Gasoline. Model Designation The model number designates the cubic inch displacement and the number of cylinders - Model K241A, for example designates 24 cubic inch displacement, 1 designates single cylinder. The letter suffix designates a specific version as follows: Suffix A EP P Q R S T Designates Oil Pan Type Generator Set Pump Model Quiet Model Gear Reduction Electric Start Retractable Start Specifications Model: ................................................................................... Bore: ................................................. inches (millimeters) Stroke- ................................................ inches (millimeters) Displacement: .............. cubic inches (cubic centimeters) Power (@3600 RPM): ................. horsepower (kilowatts). Approx. Weight: ...................................... Ibs. (kilograms) Oil Capacity: ......................................... U.S. pints (liters) Spark Plug Gap: Magneto Ignition. ............................. inches (millimeters). Battery, Breakerless: ...................... inches (millimeters) Gaseous Fueled Engines: .............. inches (millimeters) Spark Plug Size: ............................................. millimeters.. Spark Plug Type: ............................................................. Breaker Point Gap (Nominal): .......... inches (millimeters) ... ... ... .. ... ... K241 ................. K301 ................ 3.25 (82.6) ...... .3.38 (85.7) ....... 2.88 (73.0) ...... .3.25 (82.6) ....... 23.9 (391) ....... .29.1 (476) ........ IO (7.5) ............ 12 (9.0) ............ 118 (53.5) ......... 118 (53.5) ........ 4 (1.9) ............. .4 (1.9) .............. K321 ................... K341 3.50 (88.9). ........ .3.75 (95.3) 3.25 (82.6). ........ .3.25 (82.6) 31.3 (512). ......... .35.9 (588) 14 (10.4). ............ 16 (11.9) 118 (53.5) ........... 122 (55.4) 4 (1.9). ................ 4 (1.9) .. ... ... . 0.025 (0.65) .... .0.025 (0.65) .... .0.025 (0.65). ...... .0.025 0.035 (0.90) .... .0.035 (0.90) ..... 0.035 (0.90). ....... 0.035 0.018 (0.45) .... .0.018 (0.45) ..... 0.018 (0.45). ....... 0.018 14 .................... .14.. ................... 14 ....................... 14 Champion RHIO or equivalent ... 0.020 (0.50) .... .0.020 (0.50) ..... 0.020 (0.50). ....... 0.020 (0.65) (0.90) (0.45) (0.50) 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 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. in Our obligation under this warranty is expressly limited, at our option, to the replacement or repair at Kohler Co., Kohler, Wisconsin 53044, or at a 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. 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 limited to labor costs or transportation charges in connection with the replacement or repair of defective parts. OF ANY KIND, including but not 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 so the above limitation or exclusion may not apply to you. damages, 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 ENGINE DIVISION, KOHLER CO., KOHLER, WISCONSIN FOR SALES AND SERVICE INFORMATION IN U.S. AND CANADA, CALL I-800-544-2444 FORM NO.: TP-1346-C ISSUED: 1O/87 REVISED: 8197 MAILED: LITHO IN U.S.A. 53044
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