Kohler engine surging at idle

This also occurs on some Kohlers and Honda engines that use carburetors which have the Plastic Slow Idle Speed Jet. The fix is simple, remove the plastic jet, and …

5. Ignition coil problem. When you experience issues like the engine vibrating excessively, poor fuel economy, loss of power, noise, hard starts and stalling, etc. issues then it might be an ignition coil issue. To solve all the issues, all you need to do is to replace the ignition coil. 6. Smart choke problem.I get the carb screw adjusted so that idle is at 1300rpm measured at the flywheel screen. It'll be okay until I run the RPMs up and then slowly back to idle. It'll either sputter out, or the governor will surge the engine and sometimes it'll regain itself, other times it wont and it'll die.In the center of the carburetor, near the bottom of the carburetor bowl is the main jet. The main jet supplies fuel to the engine when it is at full throttle. When the main jet becomes blocked, the engine will stall at full throttle. Once stalled, the governor will close the throttle. At this point the carburetor's idle circuit will begin to ...Faulty Fuel Pump: A malfunctioning Kohler fuel pump can cause excessive pressure, forcing fuel out of the carburetor. Troubleshooting Steps. Dirty or Worn Needle Valve, Float, or Gasket: Clean or replace the needle valve, float, and gasket to prevent further leaks. Faulty Fuel Pump: Check fuel pump pressure and regulator.It is a plastic carb. as shown in this link. Disassembly, Cleaning and Repair of Briggs and Stratton/Toro/Lawn-Boy 2-Cycle Plastic Carburetor. It does not have an idle circuit as it runs only at full bore. After cleaning and putting it together I was able to get it to start but it is now surging.Kohler SV600 Engine Surging As winter is winding down, I pulled out the lawn tractor to prepare for some lawn work. ... plate but it usually is too much as overspeeds the set idle speed and tries to close throttle plate to slow the engine back down. Idle should set using a tachometer and set your engine particular spec number idle rpm. Can be ...This is a replacement engine newer design with about 800 hours. Engine runs at speed then completely stalls to about 300 rpm then surges back to regular speed. Continues repeatedly. Problem presents in hot weather over 70F. Problem presents more under load (pto) but not always. Problem presents more when turning left. Mower almost unusable.Cub Cadet 3000. Found the Kohler 7000 series manual online..... there is a small idle adjustment screw on the carb. close to the choke. Getting to it may be more trouble than it is worth, but I'll check it out. Also , Kohler says these 7000 series engines are supposed to be long lived with cast iron cylinder sleeves.

It is possible that a lawnmower is idling erratically because of the accumulation of fuel varnish or carbon deposits. Under this circumstance, you want to clean the valve. Cleaning the dirty valve requires a deep cleaner for effective cleaning. You can use an engine top cleaner or aerosol throttle cleaner for it.I had the same problem a couple of times on my XT2 with Kohler 7000 series. I ran some Seafoam through it and it stopped the surging. Mine would surge regardless of throttle position, but it was definitely more noticeable when the engine was running slower or at idle. A lot of dust and dirt can collect around the air filter.High Altitude Operation. If this engine is operated at an altitude of 4000 ft. (1219 meters) or above, a high altitude carburetor kit is required. To obtain high altitude carburetor kit information or to fi nd a Kohler authorized dealer, visit KohlerEngines.com or call 1-800-544-2444 (U.S. and Canada).Miller 325 CH730 idle surge. Engine is in a 325 miller trailblazer, model CH730-3267 s/n- 4317807711. I bought this welder with a surge at idle a slight rpm swing at full rpm. Figured it was a carb issue so ordered a rebuild kit from Kohler and tore it down not finding any kind of dirt or debris anywhere.SV735-3032 - Kohler Courage Twin Engine, Made for Husqvarna, 26hp, 19.4kW > Parts Diagrams (18) 01 CrankShaft. 02 CrankCase. 03 Lubrication. 04 CylinderHead/Breather. 05 Ignition/Charging. 06 Blower Housing. 07 Starting. 08 Fuel System. 09 Engine Controls. 10 Air Intake. 11 Exhaust.Based on the KOHLER Command PRO® commercial engine design, the air-cooled, V-time 7000 Series will run rings around your neighbors. It features a 3 year, unlimited hour, limited warranty. Specs. Features. Engine Uses. Technical Documents. Parts & Warranty. Follow us on to find the latest updates on our products. HELP. Contact .

One of the most common issues to plague generator owners is the dreaded "surge" or "revving up and down" of the engine. This can happen when the generator is under load or when it's simply at idle. As a general rule, a portable generator will surge at idle due to a clogged or restricted pilot jet on the carburetor.Loosen the spark plug wires, and with engine idling, remove one plug wire at a time, if engine dies when either wire is removed, the opposite cylinder is not firing. If one cylinder is not firing, it will cause the surging. Check cylinder for spark, with Kholer, it can be a bad coil. Kohler recommends replacing both coils , if one is bad.Jul 27, 2020 · I had the same problem a couple of times on my XT2 with Kohler 7000 series. I ran some Seafoam through it and it stopped the surging. Mine would surge regardless of throttle position, but it was definitely more noticeable when the engine was running slower or at idle. A lot of dust and dirt can collect around the air filter. ECH730. Find A Dealer. If you want lower operating costs and less downtime, the fuel-sipping KOHLER® Command PRO® EFI is your engine. Closed-loop electronic fuel injection saves you big on gas and covers more ground between fill ups.*.Partially clogged idle circuit jet in the carb. When an engine is running even at top no load the engine is running on the idle circuit of the carb. when you put a load on the engine it transitions to the high speed circuit to get its fuel. Dec 28, 2011 / Engine Surge 20 HP Kohler Command #6. H.Kohler SV725 Surging/hunting until blades engaged. I have a 24hp Kohler SV725 on a Husqvarna mower that revs up and down / surges / hunts (whatever you want to call it) at any throttle setting. It runs smooth when you engage the blades. Doesn't matter if the engine is cold or has been running for an hour. Choke setting does not stop surging.

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(RTTNews) - Poland's consumer price inflation accelerated notably in February, largely led by higher costs for food, utilities and transportation,... (RTTNews) - Poland's consumer ... Remember to follow all safety precautions before starting any work on your engine. 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. Small Engines and Repair. Kohler M20 Surging under load. Jump to Latest Follow 670 views ... If I disengage both it will recover and sit there running at full-throttle or idle just fine. If I restart it and then just park it with the deck and blower running it will also die out.11. 2.4K views 10 months ago. Are you having to add choke to keep your Cub Cadet running? Is the idle and off idle rpm surging? Well, you have a lean condition …The surging may be back to what we experienced when the car was new. Surging on Cold starts, during the cold months. We are not getting the surging on cold starts or warm restarts. that we had before the repair-on warm days. Regarding the sometimes rough idle- it is there, but more subtle. It is noticable at.50571 posts · Joined 2011. #1 · Jun 7, 2016. I posted some of this in the good morning thread. Dieselshadow suggested I post up a thread about it. I agree. The engine is on our 2014 ZTrak Z915B ZTR. Approximately 100 hours on it. The issue was surging at WOT with no load. I took the carburetor off 4 or 5 times looking for dirt and cleaning it.

Jun 7, 2017 · However, if there are any leaks, the engine can draw in outside air that hasn’t had fuel added to it, leaning out the mixture. Start by tightening all the bolts around the carburetor: these can work loose after being subjected to engine vibration, letting the carburetor separate from the head. If the engine is still surging, inspect the ... In this video I show what it took to get the engine on my mower running smooth again, in my case. I am no pro, this is just me trying to DIY and save a few b...Cadence Design Systems (CDNS) Has the Right Tempo for Further Upside...CDNS Shares of engineering and software company Cadence Design Systems (CDNS) have surged in the past couple ...Both cylinders fire when at operating speed (2680 RPM). I have replaced both coils and plugs, checked for spark, replaced fuel filter, and checked compression (150 on both). It also surges without any load on it. It drives a carpet cleaning machine and the engine stops surging when a vacuum hose is attached which puts the engine under a slight ...1591 posts · Joined 2018. #2 · Feb 25, 2020. The 1st place to look would be debris in the "idle circuit", in the carb. Common issue causing surge in MANY small engines. I keep "seafoam" in the fuel, and this seems to keep this issue from returning. IF you are not familiar, have a professional do a Carb Clean for you.Apr 9, 2022 · This is a late 90's model Scott's lawn tractor with a Kohler engine. After sitting a few years, it would start and run, but needed a little TLC to resolve th... I have a Kohler 25 hp V-Twin that surges at all engine speeds on a Craftsman GT5000 Mower. ... I have a craftman GT5000 (917.276021) lawn tractor that needs a new engine. The original Kohler 25hp engine is way too ... hello, I have a Kohler Courage v twin 26hp in a craftsman gt5000 that has been sitting idle for about a year in a shed. it has ...It violently surges at full throttle. Runs fine at idle and mid-throttle. I have done all I know, and now am stuck. I recently purchased a used 1997 Craftsman GT, 917.258921, with a 25hp Kohler Command Twin, hydrostatic drive, and 50" deck. Engine is CV25S, Spec: 69511, Serial: 2633205137.The 7000® Series KT735, Command PRO EFI® Propane PCV740, and Diesel® Liquid-Cooled KDW1404 are some of the popular 24 HP Kohler engine models. However, there are six common Kohler 24 hp engine problems, such as: Engine Starting Difficulty, Engine Misfires or Stalls, Power Issue, Overheating, Oil leaks and consumption, &.Onan P218G idle surge and loping. Jump to Latest Follow ... The engine starts right up and runs fine for the most part with the exception of the surging idle. I can pull the choke lever out a little to reduce and practically eliminate the surging. ... '69 JD 140 H3, '75 JD 300, '79 JD 317 Kohler KT17QS II, '83 JD 420, late '80's JD ...Kohler KT725 Surging. I have changed plugs, gas source, filter, fuel pump and carb. Plugs are not fouled and everything looks good but as soon as the engine is warmed up, there it goes. Can anyone help?All-season KOHLER ® PRO 10W-50 Synthetic Oil is the ideal oil for KOHLER engines. It is specifi cally formulated to extend the oil and oil fi lter change interval to 300 Hours when paired with a KOHLER PRO Extended Life Oil Filter. 300-Hour oil and oil fi lter change intervals are exclusive to and only authorized on KOHLER engines that utilize

A common symptom of a lean-running engine is surging. You might have 2 screws being a 2-barrel carby. I'm sure that kohler makes it run as lean as possible from the factory to meet e.p.a. standards, so it will probably be better for the engine in the long run to run a little bit richer.

28. Messages. 6,973. Aug 27, 2014 / LT 1000 ENGINE SURGING. #2. jackcu said: I recently bought a used craftsman LT1000 riding mower with a B&S 17.5 horsepower engine. I cleaned carb,replaced the two o rings and the gasket to the intake. It surges when running and I have tried to adjust the air/fuel screw with no change in engine.Hope this video helps with the surging or not correct running of a kohler engine, I do not recommend these enginesIt's the Kohlers that rely on gravity feed (i.e. those without fuel pumps) that are so finicky about fuel filters. In any case, always use a factory-recommended filter no matter what engine you have. My 20HP Kohler Command surges when not under a load. It runs fine with the mower engaged.Check the PCV valve and hose to the intake manifold and grommet on the valve cover. If there's a leak there it would be a big one. There is also a manual idle adjustment on the throttle body, so you might want to go through the procedure to have that reset. also make sure that there is slack in the throttle cable when the engine is at idle. it ...Showing how I fixed the surging engine on a 24hp Husqvarna gt52xlsi lawn tractor, basically these seem to all have bad o rings on the two jets and replacing ...It's in the position of the governed idle spring but I don't think it's the spring that goes there. See page 15 of the manual. ... The Kohler model number will be something like this: CH20-64680 ... A sign of something not right with the governor system is a surging engine or one that's not idling or running at a speed where it's supposed to.Messages. 95. Location. Michigan. Apr 6, 2022. #1. Looking for some help on a friends ~2012 eXmark X-series with a Kohler ECV749 EFI engine and the 60" deck. Running on one cylinder at idle and then really rough at full throttle with RPM's surging with no load and smells like it's running VERY rich. Put in new air filter as the one that …50571 posts · Joined 2011. #1 · Jun 7, 2016. I posted some of this in the good morning thread. Dieselshadow suggested I post up a thread about it. I agree. The engine is on our 2014 ZTrak Z915B ZTR. Approximately 100 hours on it. The issue was surging at WOT with no load. I took the carburetor off 4 or 5 times looking for dirt and cleaning it.If your mower engine is a Honda or Kohler, the fix is simple. Honda and Kohler's surging is commonly caused by a blocked idle jet see "Gas starvation" towards the end of the page. If you need more help, check out the "How to fix a surging mower video." If your surging mower is a Honda, check out the "Honda mower surging video."

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Idle surging. Changed fuel filter. Didn't help. 2018.(age) regular - Answered by a verified Technician. We use cookies to give you the best possible experience on our website. ... Kohler 25hp engine V twin. Engine is surging. Replaced fuel filter and using 93 octane gas ...Here I fix my engine surging problem on my Husqvarna Lawn tractor.Kohler ECV749 EFI issues. Halfway through mowing my yard yesterday, my Vride bogged down, started misfiring, and blowing black smoke. Lost ALL power. Shut it off, made sure something didn't get wrapped around the blades, fuel level, etc. Started it up and ran fine for another couple minutes till it did the same thing.My Sears Craftsman riding lawn mower Model #917.271080, probably 10 years old. It has a kohler engine Model #CV16S, type # XXXXX The engine is surging under non-load conditions with the governor lever … read moreIt's a Cub Cadet Tank with a 27 hp Kohler engine with less than 600 hours. It has never had any issues with the engine running bad. So I started my mower today and mowed my yard (about 20min worth of mowing) it started and ran perfect. Soon as I was done with my yard, without even cutting the blades off I drove across the street to mow my ...24,705. Nov 11, 2019 / Kohler CH740 power issues. #5. Before you go ripping the engine out test the governor. Start by resetting it then go for a test mow. If it is no better then put a length of string / wire on the governor arm so you can manually over ride it to give the engine more throttle when it is under load.Kohler Home generator not operating properly. In this video you will find how to repair a Kohler generator with surging and hunting issues. There could be di...I had a surging Kohler, 26 horse courage that was surging, and the carburetor did not fix it T shirt link😄https://protect-us.mimecast.com/s/RePPCBB8QWI7Oq... ….

Feb 18, 2018 / 22hp V-twin STILL surging. Help! #2. that type of surge is normally associated with the idle circuit in the carb. Even though the engine runs at full throttle, you are still running on the idle circuit unless the engine is under load. those passages are normally in the area at or in front of the throttle butterfly if you are ...2013 Equinox 2.4L surging at idle in gear. ... That's mechanical suicide on this engine. It will wear out your tensioner and chains in a jiffy due to dirty diluted oil, and as you saw, low oil. My wife's car (105000 miles) will go 2500 miles then magically start consuming oil. I top off once, then change at 3500-4000 mile mark.3. May 12, 2021 / cub cadet riding mower surging. #1. I have a Enduro cub cadet riding mower, and 2 days ago, i had to punched the PTO blade off to avoid an obstruction suddenly, and after that incident, the engine would surge when the PTO isn't engaged. When PTO is engaged, it runs smoothly. I cleaned the carb and it seems good shape, pulled ...Tach surges up about 500 rpm and back to idle about every 3 seconds. Probably happens once or twice a week. Doesn't seem to matter if engine is hot or cold. Engine stumbles from idle. Tach drops down from idle to nearly 0 for less than a second and the engine stumbles like it will stall but doesn't. Usually happens as a single isolated ...I have a 25 hp 2-cyl kohler engine installed in a 2005 John Deere tractor. The engine surges while running in all speeds, except near idle when it quits running. At max throttle the engine performance … read moreThat's after a group of shareholders accused the chain of circumventing them with a plan that will convert preferred shares to common shares. Jump to Shares of AMC Entertainment Ho... 2. Engine Running Rough or Surging. If your engine runs rough or surges while in operation, it is likely a result of fuel system or carburetor issues. Follow these steps to resolve the problem: Inspect the Fuel Line and Filter: Check the fuel line for any restrictions or damage that may hinder the fuel flow. Additionally, clean or replace the ... Apr 4, 2023 · It violently surges at full throttle. Runs fine at idle and mid-throttle. I have done all I know, and now am stuck. I recently purchased a used 1997 Craftsman GT, 917.258921, with a 25hp Kohler Command Twin, hydrostatic drive, and 50" deck. Engine is CV25S, Spec: 69511, Serial: 2633205137. Kohler engine surging at idle, Kohler engine surging. I took out dad's Gravely from winter storage, sharpened the blade and started cutting grass. It was running smooth, then about 5 minutes in, the rpm started surging. It idles just fine. It surges anywhere above idle. If I hold the throttle on the carb, the engine smooths out and just hums., I had a surging Kohler, 26 horse courage that was surging, and the carburetor did not fix it T shirt link😄https://protect-us.mimecast.com/s/RePPCBB8QWI7Oq... , Kohler KT725 Surging. I have changed plugs, gas source, filter, fuel pump and carb. Plugs are not fouled and everything looks good but as soon as the engine is warmed up, there it goes. Can anyone help?, 10,296. Jan 20, 2023 / Kohler 19hp with Nikki surging. #2. Anytime you remove a carburetor you must do a static governor adjustment once it is reinstall. Even then a few have governor weight wear that requires a little tweaking like some the engines I do here that a .010 feeler gauge is use to set the adjustment. F., Aug 28, 2014 · 6,973. Aug 28, 2014 / Kohler engine surging. #4. 93 octane does not mean clean gas. Also the outside of the carb and governor gets missed. You need to clean everything inside and out with carb cleaner and compressed air if you have it. Tiny holes get dirt i them in the carb. , May 26, 2013 · Mar 11, 2012. Threads. 55. Messages. 14,765. May 26, 2013 / LT155 CV15S Surging (I know it's common) #3. If you can get it to run fine a idle, I suspect that your problem is with the high speed circuit in the carb. My suggestion is to have the carb ultrasonically cleaned and install a carb rebuild kit. , Wheel Horse. Engines. Hello -- My friend has a 16HP Kohler vertical shaft on his Craftsman lawn tractor that has started to do something odd that Im hoping the experts here on Red Square have some ideas on. Heres what he described: On start up, while cranking, it is backfiring (through the exhaust) while the throttle ..., Identifying a Lawn Mower Engine Popping Sound and Possible Fixes. Hearing a lawn mower engine popping sound can be startling. That noise indicates that your lawn mower is backfiring, just as similar popping sounds can signal that a car engine is backfiring. When you hear that sound, it's important to get to the root of the problem immediately ..., 3 posts · Joined 2013. #1 · Jan 21, 2013 (Edited) Hi folks, I'm having an issue with my home generator surging and pulsing. Its a coleman 5000 with a 10hp Techumseh engine. I bought this unit used about three years ago with a dirty carb. I took it apart and cleaned the carb, ran a tank of good gas with extra carb cleaner through it and it ..., A leaking fuel injector can cause the engine to run rough, which might cause an extended crank and hard start when hot. Kohler Engine leaking issue. A lot of symptoms are engine stalling and backfiring, difficulty starting the vehicle, poor acceleration, and a rough idle. Fuel leaks into the combustion chamber might be shown., I need to stop the surging of this Kohler Courage engine. The carburetor has a NON-adjustable jet so that won't work. But there is a Low Idle Adjustment Needle …, Got Chrome? Surging/hunting is usually a sign of being too lean. If it's surging at full throttle or thereabouts, richen the high speed needle. If it's at part throttle, it might need a little richer setting on the low end. Small adjustments with testing in between will get you where you need to be., The Kohler SV725 is a 725 cc, (44.2 cu·in) V-twin air-cooled four-stroke internal combustion gasoline engine from the Courage series, manufactured by Kohler Co.. The Kohler SV725 engine has an OHV (overhead valve) design, vertical PTO-shaft, and pressurized lubrication system. This engine is equipped with a carburetor with a fixed main jet and one of three ignition systems: Fixed Ignition ..., Messages. 95. Location. Michigan. Apr 6, 2022. #1. Looking for some help on a friends ~2012 eXmark X-series with a Kohler ECV749 EFI engine and the 60" deck. Running on one cylinder at idle and then really rough at full throttle with RPM's surging with no load and smells like it's running VERY rich. Put in new air filter as the one that …, Showing how I fixed the surging engine on a 24hp Husqvarna gt52xlsi lawn tractor, basically these seem to all have bad o rings on the two jets and replacing ..., Understanding Engine Surge Definition of Engine Surge. Engine surge refers to a condition where the engine's RPM (revolutions per minute) fluctuates or varies unexpectedly. It is often characterized by a repetitive increase and decrease in engine speed, causing a noticeable jerking or hesitation sensation.Engine surge can occur in various situations, such as during idle, acceleration, or ..., A great way to help avoid these problems would be to perform an annual tune-up using a Briggs & Stratton Engine Maintenance Kit. Engine hunting and surging at idle is usually caused by a fuel delivery, air leak, or governor system problem. Cleaning/overhauling the carburettor, adjustment of the governor, and/or changing the air filer may be ..., Hope this video helps with the surging or not correct running of a kohler engine, I do not recommend these engines, SV725-3028 HUSQVARNA OUTDOOR PRODUCTS 24 HP (17.9 kW) SV725-3029 ARIENS 24 HP (17.9 kW) SV725-3030 MTD 24 HP (17.9 kW) SV725-3031 HUSQVARNA OUTDOOR 24 HP (17.9 kW) Kohler Engine SV725 Exploded View parts lookup by model. Complete exploded views of all the major manufacturers. It is EASY and FREE., 1. Kohler 24 HP Engine Starting Difficulty Kohler 24 HP Engine Starting Difficulty. Kohler 24 HP model users should be aware of an issue on does starting, trouble starting, or hard starting. This is one of the most common Kohler engine issues and putatively, Lawson Guts series 24 engine model users have encountered crank but no start problem., I hope one of you fine folks have a suggestion or two for me. I was given a cub cadet ltx1050 tractor with a sv730 Kohler engine. Its 4 years old and has 82 hours on it. A head gasket was blown, so I replace them both. The mower sat for one season. Prior to and post repair, the engine revs up and down at an idle. On WOT, seems to run smooth., Kohler KT725 Surging. I have changed plugs, gas source, filter, fuel pump and carb. Plugs are not fouled and everything looks good but as soon as the engine is warmed up, there it goes. Can anyone help?, I've got a Kohler 26hp, 747cc, 7000 series, KT745, V-twin on a Husqvarna zero-turn. It has a manual choke (cable type). It has slowly started running rough. At all throttle speeds and when warmed up, the engine rpms surge up and down, and at full throttle it pops through the muffler a little bit. I have to apply the choke to start it even when ..., A no load surge is caused by the idle jet being clogged with dirt or debris. even at full throttle no load the engine runs on the idle circuit of the carb. when you engage the blades the extra load causes the governor to open the throttle which switches over to the main/high speed jet in the carb and it runs smooth. D., Here are the details: -93 KA24DE swapped into 89 chassis. -Motor was from an automatic car, I'm using the 89 tranny and 93 automatic ECU, with a tranny harness from a 91-93 manual. -Freshly rebuilt. -On start up, engine surges between 1800-2300 RPM. -When I clamp off the hose to the IACV, the engine stops surging and holds a steady idle at 1800RPM., 12. Messages. 164. May 8, 2015 / Kohler CV730 surging problem, dies under load. #1. At idle the engine slows down and picks up (surges). Full throttle there is an intermittent miss, and does not feel as strong as a 26hp twin should. If blades are engaged fuel spray coughs out the carburetor and it chugs down and dies., John Deere engine surging is a result of an inconsistent combustion process in the engine cylinder (s). More specifically, it is caused by inconsistent delivery of fuel and/or oxygen to the combustion chamber. The usual problems lie in the air filter, gas cap, fuel lines, or carburetor. As you know, for an engine to fire and produce power, it ..., Diagnosing a missing and popping sound on a John Deere L110 with Kohler Command Engine. This can happen to any single cylinder or even the twin Kohler Comman..., Stop your Honda engine, Briggs and Stratton engine, Kawasaki, Kohler and any other 4 stroke governed engine from surging. Lawn mowers and pressure washers, g..., The engine will bog down and sputter then surge back to speed and when it does this i sometimes notice a smell of gas. Disengaging the deck will make it run smoother but not as it should at anything above an idle. ... with a Kohler KT735 engine (with the smart choke). Spec is PS-KT735-3051., Cub Cadet XT1 - Kohler 725 surging. I'm new to this forum, so hoping to pick the brains of the experts. I have a Cub Cadet XT1 LT46 I bought in 2016 with a Kohler 725 engine in it. Last Fall it started surging when I started it. I added Fuel Mechanic to it and it seemed to smooth it out. When I put away for winter, I changed oil, drained tank ..., 27 kohler sputters at full throttle. I have a 27hp vertical shaft kohler command on a husqvarna zero turn that sputters under load at full throttle. It really slows down, not just an occasional miss. I can back it to about half throttle with the blades on and go easy with the hydros and it will maintain speed. Oil fine. Gas in tanks, valve open., 218 posts · Joined 2017. #1 · Sep 6, 2020. My Timemaster started to develop an engine surge when idling. The machine runs fine when the blades are engaged probably because the engine revs up. But, when I disengage the blades to empty the bag, the engine surges pretty bad. I have run Seafoam through the fuel system and carb.