Kohler Engine Backfires When Starting

I have a murray 22 horse 46 inch…about 15 years old…. The valve only blocks off the main jet in the carburetor to prevent fuel from entering the combustion chamber. com Community Forums. #CV13S, Spec. Page 1 of 2 - 18 HP Kohler Backfiring Through Exhaust - posted in Off Topic: My 1864 Cub Cadet with the 18 hp Kohler ran near perfect, I parked it a week ago Friday, when I went to start it this Friday all it does is turn over and backfire through the exhaust about every 2-3 revolutions. First thing,weather is it Backfiring or Afterfiring. 5 engine cranks but won't turn over only backfires [ 1 Answers ] Hi, My mower Kohler 17. At that point it would backfire causing a valve to be pushed forward as the piston approached. I then made several attempts at starting by turning the key to "start" position then off. Do not attempt to service or replace major engine components, or any items that require special timing or adjustment procedures. Would adding Heet to the fuel tank damage an air cooled engine?. 2002 Craftsman L1000 with the Kohler 16. Last week I attempted to start it and this time the flywheel didn't move at all after a short (normal) rotation. However, it did fit the threads and appears to be doing the job well. Shoot a substitute fuel (WD-40 or PB Blaster Lawn Mower Tune-Up) into the carburetor throat and then try starting the engine (Photo 1). Do not continue cranking if engine fails to start after 20 seconds. This engine can be hard to start compared to other engines. If the plug is dry, it's a sign of a fuel problem and most likely a messed-up carburetor. Only about 60 lbs, put a shot of oil in cylinder and it jumped to about 80 psi. It runs like a champ for the first half hour and thats it. Engine backfires can be produced by a vacuum leak, bad timing, problems in the ignition system, a faulty sensor, an exhaust leak, or some other system fault. Complaint was that it was running rough at times, or wouldn't even start, and other times it would start and run fine until a load was put on it, and then it would start misfiring, and backfiring loudly, etc. ? My question involves problems with my Craftsman riding lawn mower with a Kohler 16 hp OHV engine. I have a Scotts tractor with a 17. If troubles persist after checking the possible causes listed or you are unable to identify the problem, call KOHLER Engines Customer Service at 1-800-544-2444 or contact your local KOHLER dealer. This puts excess air in the mix which creates a lean blend. id="quote">I agree. Kohler Command Pro CH640 674cc 20. The generator is running very rich I adjusted idle fuel mixture screw 1-1/4 turns out and engine does not start, unless I turn idle fuel screw back down, but it seems that the engine is running hard, it stays started but there is gas shooting from carb. My neighbor has a Kohler engine on his also and his backfires every time he shuts it off, but of course he does not let it cool down from high load. Order Status Customer Support 512-288-4355 My Account Login to your PartsTree. I rarely have problems with this engine, but after filling with fresh fuel and running for about an hour, the engine started back firing. let sit a few minutes, and re-start. When I first start it when its cold it runs fine. 5hp Kohler single. Before working on the generator set or connected equipment, disable the generator set as follows: (1) Move the generatorsetmasterswitchtotheOFF position. The engine has been running great, the only problem is that it backfires sometimes when shutting it off. While it's not dangerous, it can be a symptom of other problems, and should be addressed. cleaned air filter. Brand New Engines and discount portable generators - Your #1 source for replacement new engines including Briggs and Stratton, Honda, Robin Subaru, Kohler engines, gas and diesel portable generators, pressure washers, snowblowers, lawn mowers, and other gasoline powered equipment and low cost best price engines parts. Sooner or later, the valve stem will bend. Only fix new pin and camshaft, but you decrease point gap up to point almost no gap in points to get knock out engine, new push pin give few more hours knock free are not. 4 out of 5 stars 102 $9. I had a Kohler in this mower I was flipping and it was so bad that every time you hit a bump and the seat safety switch killed the ignition momentarily it would backfire. The Kohler Engine on My Riding Lawn Mower Will Fire but Not Start. Bobcat Skid-Steer Repower - Small Engine Repower : This Bobcat Skid-Steer was repowered at our repair shop with a 23 horse power Vanguard engine. 5) to start. On my second attempt, again it would turn over, but as soon as I let go of the key it would stop and let out a big puff of smoke. A certain amount of engine oil accumulates in the valve cover, but NOT to the point where it is flowing or blowing out of the breather hose. I have a 10 hp Kohler (K241) under full throttle (and under load) it loses power and backfires out the exhaust. Starting Fluid/Ether Great tool to use on any engin,i have been using it since i was a teenager in the Yukon where it gets very cold at times. Sometimes, locating the source won't take you much time, other times it can prove difficult. Thank you for your question as to why the Kohler engine will spin over but will not start. As long as you've been paying attention, nobody knows how your engine sounds better than you do, so if it starts to sound odd or even just a little different, there could be a problem. The engine would start just fine, run for 5 minutes, then backfire 10-15 times and sputter to a halt. Explore KOHLER toilets, faucets, sinks, showers and other kitchen and bathroom products. I will need to have your model number of the tractor to figure out if it is a relay or an engine spark module problem. TWO CYLINDER SERVICE MANUAL MODELS: K295-2,K295-2AX, ifthe engine does not start, it may also be due to poor compression BACKFIRES, RUNS UNEVENLY x I I I I x. What Carb Kits work for my tractor? 7. And There's Your Dinner!! Find us on Instagram and. On the occasion you find your Kohler engine performing less than optimally, use our troubleshooting guide to diagnose the issue at home. Incorrect timing can lead to the fuel being ignited before the manifold intake valve closes, causing a backfire through the carburetor or exhaust. 23 HP KOHLER PRO / NO START / JUST CLICKS / HOW TO DIAGNOSE THE ELECTRIC STARTER. Getting vary hard starts, where at first it doesn't seem to be getting fuel then all of the sudden, it gets too much and I get a backfire. Backfiring is a startling explosive sound that can happen when you shut down your lawn mower or other small-engine-powered equipment. The vertical-shaft gasoline engines range in horsepower from 20 to 25. Equipatron's selection of Kohler small engines will get your power equipment back up and running in no time. Hi, My mower Kohler 17. NOTE: Carburetor is calibrated by the engine manufacturer and is not adjustable. know that spring is a pain when the cable is worn a lot too. I rarely have problems with this engine, but after filling with fresh fuel and running for about an hour, the engine started back firing. Your thoughts are appreciated. The engine has been running great, the only problem is that it backfires sometimes when shutting it off. I still have one with a 16HP K series, I had trouble several years ago with it being hard to start and after it warmed up it would quit. (Something I noticed on a few tractors I bought or looked at). I think the problem may be the automatic compression release hanging. I need help figuring out my 24 horse Kohler engine i’ve change the carburetor I change the plugs have change the fuel pump !! After the engine gets hot the engine was the cut out like it’s starving for gas if I adjust the choke on the choke for a few seconds and put it back in its normal position in a run fine for a while and then it’ll. Avoiding Backfires. Tried a different, not new plug, with no change. The correct term is the "Anti-Afterfire Solenoid". I had read somewhere in my travels on the problems with these engines that the solenoid at the bottom of the carb turns off the fuel flow to prevent backfiring. 017” and intake valve to. That blend goes into the exhaust system because of incomplete combustion from mistiming. Kohler Command Pro CH640 674cc 20. Our vast product line is preferred by major manufacturers to power everything from heavy-duty concrete saws to precision-cutting greensmowers,. Is full of electronics. 5 Gross HP Electric Start Horizontal Engine, 1-1/8" x 3-11/32" Crankshaft, Tapped 7/16" -20 Model: PA-CH640-3149 Write a Review. A backfire is a loud noise or poof of smoke from the engine when it begins to idle. Kohler Engine Backfires, What The Hey? - posted in Tilling & Plowing: sorry I haven't remembered to get pics of it but My Ariens s 14 h was working fine plowing snow, then it was backfiring and cutting out when i move the throttle up. I pulled the head, the valves look good. The generator is running very rich I adjusted idle fuel mixture screw 1-1/4 turns out and engine does not start, unless I turn idle fuel screw back down, but it seems that the engine is running hard, it stays started but there is gas shooting from carb. Fuel Pump for Kohler 17HP-25 HP Small Engine Lawn Mower Tractor, Gas Vacuum Fuel Pump with Fuel Filter for Honda Yamaha Briggs & Stratton John Deere 4. #CV13S, Spec. Your thoughts are appreciated. The Kohler Engine on My Riding Lawn Mower Will Fire but Not Start. Hit the points with a points file, they were a little fuzzy, still no spark. I then made several attempts at starting by turning the key to "start" position then off. com huge inventory of Kohler engine and service repair part. com Community Forums. Power loss and backfiring can be caused by poor maintenance practices or problems with the mower engine. It takes a little longer to fire causing fuel to also load up then blowing black smoke when engine turns over. Instantly restore engine power by replacing your old carburetor with our afermarket kohler carburetor. Customer just brought in a mid 90's Craftsman LT with 15. If all three are present it will run, if any are missing it won't. I would say in my experience with other small engines the spark intensity looks weak. As throttle closes, link between throttle and choke operates choke to a slightly open position. That engine should be turned off ,according to Kohler. gross torque 149cc OHV engine with auto choke, no need to prime or choke, CARB compliant No oil changes for the life of the engine with Just check and add oil, check the oil tank level and add oil as needed. The vertical-shaft gasoline engines range in horsepower from 20 to 25. I have a Kohler Ch-25 engine on a Zero turn mower. Has no fire at spark plug wire. Last year I replaced a burnt exhaust valve, set the tappet clearance for the exhaust valve to. Cub Cadet FAQ's. When you try to start the engine, does it turn over at normal speed, as if it is trying to start, or does it spin a lot faster or slower than you might expect? If it is a lot faster, you may have low compression. Your Engine just started acting up and you don't know what to do. Never operate the engine with heat shields or guards removed. It does exactly that, prevents "afterfiring" when the engine is cut off. Tuesday night I just decided to go with my gut and glue the magnets back on. Loud as a gunshot. backfire is a result of half burned, hot exhaust finding oxygen to finish burning. Pulled fuel … read more. Before you pay for an expensive repair on your hard-to-start Briggs & Stratton lawn mower, check out this helpful guide on diagnosing and fixing engine problems. Remember to follow all safety precautions before starting any work on your engine. My craftsman rider is a 17. A certain amount of engine oil accumulates in the valve cover, but NOT to the point where it is flowing or blowing out of the breather hose. After running it about a half hour it starts to miss and stutter and backfire. It might just be a problem with compression release that you should be able to fix yourself. While the engine is running at almost full trottle and I engage the cutters, the engine will start backfiring. Plug gap is. Video - What do I do if my tractor won't start? Product Support - My tractor will not start, the engine will not turn over, the hour meter doesn't work and the headlights will not shine. Hi, I have a Honda HRB425C mower that won't start. First i checked the flywheel key, it ok. Have a 16 Hp Kohler engine. For removal water gets my. I am going to give it a tune up shortly but my suspicion is thats its something else. The vast majority of these use either Tecumseh (as found a variety of Sears/Craftsman equipment) or Briggs & Stratton engines. It does depend on what type of engine your mower has. Has no fire at spark plug wire. Eventually it will start, sometimes backfiring through the exhaust before it starts and runs. I also had similar symptoms in the Kohler engine in my JD riding mower, that I traced to a dirty carburetor. Get tips and ideas. What's the difference in Kohler blocks for Cub Cadets? 6. Looking for Site or Help in how to test the Engine Rectifier, Stator, Engine Module and Digital Module. Complaint was that it was running rough at times, or wouldn't even start, and other times it would start and run fine until a load was put on it, and then it would start misfiring, and backfiring loudly, etc. I'm assuming that that initial start way too rich caused a fuel buildup which made the afterfire. Last week I attempted to start it and this time the flywheel didn't move at all after a short (normal) rotation. Stator, ign switch, solenoid all tested fine. I have a craftsman lawn tractor with an 18HP Kohler twin, model M18S. I took it off last year and left it in a coffee can. Seems like a weak spark. i have good spark but just keeps backfiring threw the carb. Any help would be very much appreciated…. How fast is the engine turning while cranking? A slow crank will prevent starting. Find and buy replacement parts online. Probably one of the most informative small engine manufacturer websites online is the Kohler engines' site. Hot Parts! Engine components can get extremely hot from operation. That engine should be turned off ,according to Kohler. let sit a few minutes, and re-start. This can often lead to an excess of air in the mix, creating a lean blend. The timing of a small engine is crucial for it to actually start and run properly. Have used it on all gas engines at some time. Hit the points with a points file, they were a little fuzzy, still no spark. Is full of electronics. It has good spark – removed plug, reattached plug wire, turned engine over with end of plug held near metal frame, sparks. The vertical-shaft gasoline engines range in horsepower from 20 to 25. It was a winter project, so I took my time and put together a hot rod Kohler, something I've wanted to do for a long time. have atoro lawn mower with a koler engine show me how to replace starter engage ment gear, how to remove flyweel off kohler engine 26hospower toro zero turn, how to replace smart lever inside air cleaner box kohler xt650 engine, how to start a toro mower with a atx650 kohler engine, kohler toro lawn mower engine wont start,. It takes usually 4 starts to get the unit to sart correctly which doesnt seem out of the ordinary but I am wondering if this is the same for other 5E owners?The bigger issu. I have a Kohler 25hp twinCouple weeks ago after changing oil using full syn Mobil 1 10w-30 I would get a knocking noise after hour of running it. 5 won't start, cranks hard, and backfires. Have run across maybe three engines over the years that did that or something similar and in each case they had a US Forest Service approved muffler and the fine mess screen they put in them was getting carboned over and not letting the exhaust out. Try to pour a few teaspoons full of fuel into the throat of the carburetor. I took the unit back and got a refund. A lawnmower backfire makes a surprisingly loud noise, catching you off guard when you're wrapping up your yard work and shutting off the lawnmower. To keep your engine in top operating condition, follow the maintenance procedures in this manual. A backfire could be from alot of things. I kind of took that for granted and expected other engines to start as easily so was a little dismayed when first working with the 40 HP Kohler. Wait a few seconds and it will start and run and do the same thing. com Kohler Engine, 13 HP, Mod. How do I remove my front axle? 4. 4 out of 5 stars 102 $9. Tuesday night I just decided to go with my gut and glue the magnets back on. backfire is a result of half burned, hot exhaust finding oxygen to finish burning. We replaced left side coil and it ran fine, mowed half my yard about 2 hours worth and mower began running rough again, no power, backfiring,. What Carb Kits work for my tractor? 7. A certain amount of engine oil accumulates in the valve cover, but NOT to the point where it is flowing or blowing out of the breather hose. Page 1 of 2 - 18 HP Kohler Backfiring Through Exhaust - posted in Off Topic: My 1864 Cub Cadet with the 18 hp Kohler ran near perfect, I parked it a week ago Friday, when I went to start it this Friday all it does is turn over and backfire through the exhaust about every 2-3 revolutions. )? I can't get my Cub cadet LT1042 riding mower to start. Engine is a 27HP Kohler with carburetor. Twice now it has failed to start due to no spark. Listen here: John Deere Maintenance Monday: Backfiring lawn tractor engine. Time for a brain teaser. Tuning a Kohler Carbureter Lawn, Turf, and Grass Lawn, Turf, and Grass I have a riding mower with a 46' deck powered by a 18. I have yet to have used this generator because of this issue. It is not catching. 2 weeks ago my teenage son did not turn key all the way off and drained battery. The following table lists some of the common causes of trouble. Use in all Kohler K-series single cylinder engines, and K482, K532 and K582 opposed twin cylinder engines when converting engine for use with a Universal Solid State Electronic Ignition Module, to Kohler Magnum solid state ignition, or crank- or flywheel-trigger electronic ignition. I will need to have your model number of the tractor to figure out if it is a relay or an engine spark module problem. After running it about a half hour it starts to miss and stutter and backfire. 5 Gross HP Electric Start Horizontal Engine, 1-1/8" x 4" Crankshaft, Tapped 7/16" -20. When the key is turned off is should stop 100% of the fuel from entering the c chamber. I also see the breather tube in a photo of your engines. Sometimes it runs longer than the next but never over 3-4 minutes. Mower owners may need to reflect if the mower had run over some huge obstacle during its operation that could have damaged some components to cause the backfiring. Hot Parts! Engine components can get extremely hot from operation. Hi Taryl, My Craftsman Kohler Courage V-twin 26 horse won't start (Model 917. No problems that way. We sell carburetors for Kohler K161, K181, K241, K301, K321, K341 Cast Iron Engines. For removal water gets my. 020),new coil and condenser, rebuilt carb. Twice now it has failed to start due to no spark. I've checked the fuel line which is fine and the carb bowl fills with fuel. Down through the years my family has had several Wheel Horse tractors that all had the old K series Kohler engines of various horsepower. Lawn Mower Repair Valve Adjustment V-Twin Briggs. My friend has a 16HP Kohler vertical shaft on his Craftsman lawn tractor that has started to do something odd that I'm hoping the experts here on Red Square have some ideas on. Backfiring through the carb is one symptom of valve trouble. I know Kohler engines really like to backfire unless you do one of the above. That engine should be turned off ,according to Kohler. Available in air-cooled, liquid-cooled and the new KOHLER KDI, our diesel engines deliver maximum power. Find and buy replacement parts online. Kohler engine will only start by spraying starter fluid in the carb. The only time I have ever heard a knocking sound come from a car engine is when the oil was low so you should check to make sure there is enough in your lawn mower. Rebuild the carb. 84 Kohler 17 hp no spark! Welcome to 6x6 World. Why does my engine spit or backfire? First off, you need to determine whether it is backfiring out the exhaust or back up through the carb. If this fixes the problem then Float valve is getting stuck intermittently. know that spring is a pain when the cable is worn a lot too. Starting Fluid/Ether Great tool to use on any engin,i have been using it since i was a teenager in the Yukon where it gets very cold at times. The motor is backfiring out of the carb and exhaust is spitting flame the carb is spitting gas out of it, and I'm at a complete loss please help as this is my only transportation to and from work!. For removal water gets my. if you say you are getting fuel and it is cranking hard, check the compression. Though some of you may not want to change a fuel pump because in particular cases you need to remove the fuel tank, have no fear many of today's vehicles have trap doors either under the rear seat or in the trunk which makes the job much easier even though I don't mind taking a tank down from a vehicle, it's a fun day project that family and friends can help with. In this edition of Maintenance Monday, we're answering a question from Dena in Mississippi. 005 in Exhaust valve with 0. If I spray carb cleaner into the carb then the mower will start for a second or two. This Kohler Command PRO OHV V-Twin Vertical Engine has a durable, long-life design with hydraulic valve lifters that are oil pressurized, ensuring that push rods stay in constant contact with the rocker arms. So I think that's a good suggestion. However, it did fit the threads and appears to be doing the job well. Other times it will not start; the starter turns it over fine. Loud as a gunshot. Kohler Anti-Backfire/Engine Shut-Off Solenoid Valve Kit. Before selling my C-120 years ago, it would backfire every once in a while on shutdown. PROBLEM: Will not start & run. Remember to follow all safety precautions before starting any work on your engine. 5 hp engine, has been the best mower ever, until now. It has 280 hours and well maintained. it was bought new in 1987 by a dpw who gave it to me last year. My question involves problems with my Craftsman riding lawn mower with a Kohler 16 hp OHV engine. My 18 hp Honda in the VT TM always started first turn. It runs like a champ for the first half hour and thats it. The engine will turn over indefinitely but not start. Great power and easy starting from the KOHLER 6. Sometimes it runs longer than the next but never over 3-4 minutes. The smoke (from what I can tell) is coming roughly from the area near the cam belt cover and the top of the block (not sure what else to be looking for around. ) and Jeff Gruell (Kohler Co. Why Does My Engine Backfire or Afterfire? Is the small engine on your lawn mower, snow blower or outdoor power equipment making loud noises? This FAQ from Briggs & Stratton will help you identify the problem and find solutions. 5 engine cranks but won't turn over only backfires [ 1 Answers ] Hi, My mower Kohler 17. Last Update Replies Views. For engines to run efficiently, the spark plugs have to ignite the air and fuel at the right time. She says, "I have a 2002 John Deere riding lawn mower, and always try to take good care of it, but every time I shut it off, it backfires. This fault condition does not inhibit engine starting. Seems like a weak spark. Also have you checked the plug gap. "The Kohler Engine on My Riding Lawn Mower Will Fire but Not Start. 5 engine cranks but won't turn over only backfires [ 1 Answers ] Hi, My mower Kohler 17. It runs like a champ for the first half hour and thats it. Add Kohler PRO Series fuel treatment or equivalent to fuel tank. When i got the lawnmower last fall it ran great. Getting vary hard starts, where at first it doesn't seem to be getting fuel then all of the sudden, it gets too much and I get a backfire. ? My question involves problems with my Craftsman riding lawn mower with a Kohler 16 hp OHV engine. Even when it is running it will occasionally take a spell of cutting out like it has water in the gas, backfiring occasionally. Backfiring through the carb is one symptom of valve trouble. Equipatron's selection of Kohler small engines will get your power equipment back up and running in no time. kohlerengines. Stopped it again to make another fine adjustment. Start Valve Enrichment Use of the SV start assist valve for priming during cranking is helpful. Kohler 16 hp mower engine problems. This recall involves Kohler Courage twin-cylinder engines sold with three brands of lawn tractors: Husqvarna, Cub Cadet, and Troy-Bilt. Then after cooling down, it acts the same way again. 5 engine stopped working, when I tried to restart it it will crank but not start. Engine oil capacity is dependent on your specific engine model and can be determined by checking the Oil Recommendation FAQ. Kohler has said the motor needs to be replaced but won't pay for it. Will not start. 5hp Kohler single. The vertical-shaft gasoline engines range in horsepower from 20 to 25. The term backfire refers to a popping noise caused when gasoline ignites outside of the engine's combustion chamber. This is not to be confused with backfiring, which is a totally different thing. Plug gap is. Some models will have a relay that will let the engine spin but will kill the spark to the spark plug. I had read somewhere in my travels on the problems with these engines that the solenoid at the bottom of the carb turns off the fuel flow to prevent backfiring. Someone 0 Replies 260 Views. ) and Jeff Gruell (Kohler Co. Rebuild the carb. TWO CYLINDER SERVICE MANUAL MODELS: K295-2,K295-2AX, ifthe engine does not start, it may also be due to poor compression BACKFIRES, RUNS UNEVENLY x I I I I x. 2 weeks ago my teenage son did not turn key all the way off and drained battery. Fault code is displayed if the engine starting battery voltage falls below 9. Tuesday night I just decided to go with my gut and glue the magnets back on. When I first start it when its cold it runs fine. Last week I attempted to start it and this time the flywheel didn't move at all after a short (normal) rotation. I took the unit back and got a refund. Some models will have a relay that will let the engine spin but will kill the spark to the spark plug. Brand New Engines and discount portable generators - Your #1 source for replacement new engines including Briggs and Stratton, Honda, Robin Subaru, Kohler engines, gas and diesel portable generators, pressure washers, snowblowers, lawn mowers, and other gasoline powered equipment and low cost best price engines parts. 5 VDC for a 12 VDC system or below 16 VDC for a 24 VDC system for more than 2 seconds when the engine is not running. COST-SAVING DESIGN • Less downtime for refueling*. Learn more about our Kohler engines today. After spring cleaning this year, I can't find the original carb to save my life. Then try to start the engine. TP-5986 4/03 Safety Precautions and Instructions III Fuel System Explosion. This puts excess air in the mix which creates a lean blend. Have never worked on that model Kohler so this is a long shot that may be off in left field and if so please forgive me. Do not continue cranking if engine fails to start after 20 seconds. On Magnums, K and KT series engines, Kohler suggests the cool down before shutdown but that doesn't do you any good if your idle is set too high also. I had read somewhere in my travels on the problems with these engines that the solenoid at the bottom of the carb turns off the fuel flow to prevent backfiring. For 20 years, landscape professionals have counted on KOHLER ® Command PRO engines to power their equipment and their paychecks. The original engine was a 20 horse power Kohler. Then shut it down and let it cool down and start it back up it would be fine. The generator is running very rich I adjusted idle fuel mixture screw 1-1/4 turns out and engine does not start, unless I turn idle fuel screw back down, but it seems that the engine is running hard, it stays started but there is gas shooting from carb. Eventually it will start, sometimes backfiring through the exhaust before it starts and runs. Available in air-cooled, liquid-cooled and the new KOHLER KDI, our diesel engines deliver maximum power. It has 280 hours and well maintained. I pulled the head, the valves look good. Sometimes, too much fuel is delivered to the combustion cylinders for a given amount of air. It takes a little longer to fire causing fuel to also load up then blowing black smoke when engine turns over. (B) ELECTRIC START MODELS: Move switch to START position--release as soon as engine starts (switch wii remain in "ON" position). Alternative Fuel Engines With propane, natural gas, flex fuel E85 and tri-fuel options, our Command PRO engines meet your emissions needs. If it is cranking too slow the engine will not start. The following model features a 25 HP Kohler 7000 engine with a V-Twin scheme. Kohler manufactures engines and engine-related parts to serve a host of applications in a variety of weather conditions. Not truly a "back-fire", it's caused by fast running engine coasting down, pumping carbureted air/fuel mixture into the muffler, with hot internal muffler components above the self-ignition temperature of the mixture. While starting up I will partially choke the engine and once it starts (if I am lucky) I will very slowly trottle up. When the key is turned off is should stop 100% of the fuel from entering the c chamber. The engine does not have a carburetor. Learn more about our Kohler engines today. How to replace head gasket on Kohler command. At that point it would backfire causing a valve to be pushed forward as the piston approached. ? My question involves problems with my Craftsman riding lawn mower with a Kohler 16 hp OHV engine. I was mowing recently when it started backfiring like crazy. ) should be used. Brought to you by. When the engine is shut down it backfires everytime. Kohler Engine Backfires, What The Hey? - posted in Tilling & Plowing: sorry I haven't remembered to get pics of it but My Ariens s 14 h was working fine plowing snow, then it was backfiring and cutting out when i move the throttle up. Then becomes hard to start when it is at running temp. The motor is backfiring out of the carb and exhaust is spitting flame the carb is spitting gas out of it, and I'm at a complete loss please help as this is my only transportation to and from work!. Anyone out there that has had a similiar problem and would share the findings. The original engine was a 20 horse power Kohler.