Kawasaki engine surges at full throttle

Honda GCV160 auto choke lawnmower, Surging and smoking a. Honda GCV160 auto choke lawnmower, Surging and smoking a lot, Check and replace the Spark plug, Clean the carburetor, Muffler full of oil, … read more. Vince O. Small Engine Technician. High School or GED.

Faulty Impeller. Bad Spark Plugs. Malfunctioning Fuel Pump. 1. Tangled Propeller. If your outboard motor will not throttle up, the issue may be as simple as a tangle. Debris such as fishing line, excessive seaweed, beer can rings, or nearly any other material can wrap around the propeller and its spindle.4 posts · Joined 2018. #1 · Jul 3, 2018. My 1984 JD 240 has a FC420V-DS00 Kawasaki engine that's surging. Its very pronounced at idle, but detectable even at full throttle. Then after running for 30-40 minutes when the engine really heats up, it begins to cut out until eventually the engine will die. If I hold the hood open to increase air ...Surging Engine. OK, we have a liquid cooled 27 HP Kawasaki engine model number FD750D-S04. It has a very bad surging problem from half throttle and above as long as it is not under a load. Once the blades are engaged or if you drive up a hill it smooths out and runs great. Another thing is it backfires and sputters when we take it from full ...82 posts · Joined 2009. #10 · Apr 29, 2009. MowerMedic77 said: Yes this is normal that is the difference between and 23HP and 25HP, the 25HP butterflies open fully. I recently had a unit that was doing the same thing. It would run perfect under 0 load but full throttle blades engaged it was a pig poppin and sputtering.Jun 2, 2018 · Jun 2, 2018 / Kaw FH721v surging. #1. I have adjusted the valves, adjusted the governor, and thoroughly cleaned all linkage. And rebuilt the carb. It will not run unless 1/2 to full throttle, and is surging constantly. I cannot set the idles while it’s running like this. Troubleshooting a throttle/fuel issue on a FH661V Kawasaki engine. Cranking the engine with choke works and I can idle the engine on low. When I apply throttle, the engine appears to be starving of fuel and will shut off within one minute. I can extend that minute by applying more choke but that's obviously not a working solution.

As I mentioned, it was surging before with the old carb, so the problem is probably not related to the new carb. I disconnected the governor shaft from the throttle linkage today, and the engine ran fine at all RPMs. So the surging seems to be caused by the governor somehow. I watched the end of the governor shaft and it's all over the place.When it comes to replacing an engine, many people consider purchasing a remanufactured one instead of a brand new engine. Remanufactured engines offer several benefits, especially ...Jun 9, 2020 · Jun 8, 2020 / Kawasaki FH601V surging / loping at high rpm. #1. I bought a well cared for JD 717a mini z Trak 48” mower last year. It’s old but it is in fantastic shape. The motor is a 19hp Kawasaki FH601V It idles fantastic, and starts like a dream, but at full throttle and especially under load it lopes and seems to struggle to maintain ... The engine sounds and feels bogged down and surges. When I get to the top of the hill I let off the accelerator and I feel like the the tranny reset to normal operation. I park it. The muffler is real hot. Oil is good, water is good. I let it sit for 30 minutes... only the check engine light is on now.Hey everyone, I would love to hear some input/help with a surging idle issue I am having on my 2012 exmark turf tracer. It has the kawasaki fs600v 18.5 hp motor on it. Currently it runs fine at high rpm but if I lower the throttle at all it begins to surge up and down. I have already cleaned the gas tank, replaced the fuel filter, cleaned the ...

I have a 15hp Kawasaki on a 48 Lesco and the engine surges. I did all the routine things I could think of. Changed oil, air filter, emptied carb bowl, cleaned fins, sprayed carb cleaner, fuel filter. ... My problem is that the engine runs well at full throttle, but at idle or part-throttle it surges. The mower manufacturer (DR AKA Country Home ...Drain old gas from the tank. Use a siphon if you have one – and save spills on the engine and floor. Add a fuel stabilizer to the gas tank (manufacturer’s recommended mix ratio) and top it with a full gas tank. Run the engine for 2 minutes to circulate the fresh gas. Check for mower engine surging.About 2-3 lawn cuts ago I started to notice under heavier load (going uphill mowing) the engine would sputter gradually and lose power. It would go away going downhill, but then repeat going uphill. The last lawn cut going up the same hill mowing at full throttle the sputtering was constant with a loss of power.Check the spark plugs and ignition coils - Worn or malfunctioning ignition coils can also be the culprit behind engine surging. Inspect these components and replace them if necessary. Inspect the fuel filter - A clogged fuel filter can restrict the flow of gasoline to the engine, resulting in engine surging. Replace if needed.May 14, 2018 · Is your riding mower engine surging mostly UNDER LOAD at MID RANGE THROTTLE / RPM? Check this somewhat hidden and fragile carburetor linkage spring first bef...

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Use the wire from a bread tie to gently clean the inside diameter of the main jet and idle jet. If replacement parts are needed, make sure you write down the numbers from the engine so your dealer can get you the correct items. If Briggs, Get the Model, Type, and Code from the valve cover.Briggs 22 hp twin surging badly all rps adjust governor arm , tried adjusting both ways now nothing but full throttle. Removed springs from arm, worked throttle by hand. No movement in governor arm at …Some articles I have read suggest removing the stock auto-choke carb and replacing it with a Honda CT70 Carb. Check with a local shop to verify, I do not own either and am just passing along the info. Another solution suggested by 'OneRide': Try it with the gas cap off. The tank vent might be plugged. Possibly plugged fuel filter.You can try the old school trick of running the engine at full revs and closing the choke until it almost dies. Open the choke and let the engine stabilize. Repeat this process a few times. You might get some good results. If not, the only true way to effect repairs is to disassemble the carb and fully clean it.This happens on cold start about 25% of the time. When it does, if I pull the choke all the way out for a second and then push it all the way back in, it usually clears up, but not always. If I rev the engine up, it clears up and runs smooth at higher RPM (past 1/2 throttle). This also happens when the engine is hot (after 1 to 4 hours of mowing).Tweet. #7. 06-20-2010, 12:08 PM. Re: stx 15f idle problems and running rough. I have a simliar problem with my 04 15 F with 77 hours on it. It ran great when I first rode it. Idled nice. Then after a 30 minute ride it would idle up around 2000- 3000 rpm on the trailer and vary up and down all the time.

My GX345 has had engine surging since it was new, this 20 minute easy fix took care of the problem. My GX345 has had engine surging since it was new, this 20 minute easy fix took care of the ...I just purchased a John Deere Z540R with the Kawasaki 24hp (FS730V) engine less than a month ago last week I noticed that it was surging while idling and at low throttle, now it’s surging worse and has a light surge even at full throttle. At mid throttle it surges so bad it feels like the engine is about to stall, the machine only has 7 hours ...Joined May 16, 2013. 551 Posts. #77 · Sep 29, 2016. Now that the motor is fixed (hopefully) register a complaint (in writing) with the dealer, detailing every aspect of what the repair shop damaged. Hand the service guy one copy, and keep another ... get him to acknowledge & sign it if possible.Jun 8, 2020 / Kawasaki FH601V surging / loping at high rpm. #1. I bought a well cared for JD 717a mini z Trak 48" mower last year. It's old but it is in fantastic shape. The motor is a 19hp Kawasaki FH601V It idles fantastic, and starts like a dream, but at full throttle and especially under load it lopes and seems to struggle to maintain ...The engine fails to function when there is an excess of carbon dioxide mixed with the exhaust gas and not enough oxygen. At this point, the Electronic Control Module overcompensates by allowing excess air to enter the chamber through the intake manifold and the engine runs lean. Therefore, the engine surges. The solution: Change the EGR …4. Apr 30, 2018 / Kohler 7000 Started Surging Suggestions Needed Please. #1. Hi Follks, I am not the best at fixing small engines so I am trying to learn. I have a Troy-Bilt Zero turn with a Kohler 7000 Engine and Walbro Carb. The engine started to sputter and die when I ran it for 5 min. The first thing I tried is pulling off the carburetor ...Aug 1, 2015 / FR730 Surging @ Idle & Intermediate Speeds. #1. I have a 2011 Husqvarna GTH26V52LS mower with a Kawasaki FR730VAS04 engine with a little over 90 hours on it. It has run great but recently at idle and intermediate speeds the engine began to surge but it doesn't die. At full throttle for mowing it seems to run fine.My mower has the 24hp kawasaki EFI 750 engine and when dropped to idle it slowly settles into a never-ending cycle of pulsing the throttle to try to attain the target idle revs. If you bump the gas up, it cuts the fuel back and settles into the same pattern quite quickly.

John Deere 112L (Kawasaki FB460V engine) surging. Still using this mower the grandparents bought new in 1985! It started surging last summer at the end of the season so last week I got it out and took the carb off, disassembled/ boiled in lemon juice/ blew out passages with compressed air, and then put it back on. Still surges.

Swapping out a fuel filter. One of the solutions to fix a surging lawn mower engine is by swapping out the fuel filter. A clogged fuel filter can cause issues with the flow of fuel to the carburetor, leading to fluctuating revving and surging of the engine. If you notice your lawn mower surging at full throttle or the engine surging up and down ...54 inch mower deck. It only has about 250 hours on it. My issue is that once it has warmed up, it surges at idle. Sometimes it will come out of it and idle fine briefly, sometimes it just dies. In addition, at full throttle when I engage the blades, the engine nearly dies before it revs back up. On occasion, it will actually die when I engaged ...Engine starves for fuel at high speed (leans out) Check inlet needle and seat for condition and proper installation. Carburtor leaks. Engine overspeeds. Idle speed is excessive. Check sealing of welch plugs, caps, plugs and gaskets. Carburetor out of adjustment. Engine will not idle. Engine lacks power at high speed.The mule pro fxt ranch edition is back in the shop. Same problem, no resolution. Been out of commission for 7 weeks this Saturday. I have taken it to two dealers (original dealer first) and neither can find the problem. I'm not getting any assistance from Kawasaki at this point, even though it's still under warranty.SE Va. Tractor. '63 Ford 4000, '48 Massey Harris 30. My 63 Ford 4000 172 ci 4 cyl gas engine recently rebuilt starts easily but surges all the time now. Been using it fine for months after the rebuild. Recently I was mowing and the engine quit. I decided that the carb had issues so I had it rebuilt. Put it back on with a new gasket and with the ...Engine will run, but it surges, hunts for a constant RPM. 1. Partial Blockage of Main Jet. This is for bowl type carburetors only. Stop the fuel flow to the carburetor, either turn off the fuel valve or pinch off the line with a pair of fuel line pinch off pliers or a pair of vice grips.So I have the engine in and running. It runs well on full throttle and with the blades and drive going, but at low speed it surges and hunts. I accidentally read the tappet clearance wrong from the manual and ground way too much off the valve stems .040 instead of .004. Would this cause the surging?kbeechler. 11 posts · Joined 2022. #9 · Nov 8, 2022. I’m reading about the Kawasaki FJ180V surge, I have a brand new machine, straight out the box, it too surges during load, it idles beautifully.. it will really surge at full throttle, but if I back it off to about 3/4, it surges very little..First thing I would do is get a Tach on it and run it where it is surging. Grab the linkage with your hand and hold it at a steady RPM where it normally surges. If the surging stops and it runs fine, the problem is in the governor. If the engine dies or wont run steady while holding the throttle you have a fuel problem.

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2003 Kawasaki FH500V surging at full throttle and smoking. Jump to Latest ...Surging Engine. OK, we have a liquid cooled 27 HP Kawasaki engine model number FD750D-S04. It has a very bad surging problem from half throttle and above as long as it is not under a load. Once the blades are engaged or if you drive up a hill it smooths out and runs great. Another thing is it backfires and sputters when we take it from full ...matt167 Discussion starter. 4517 posts · Joined 2011. #1 · Jun 3, 2014. My LX188 has always had a light surge without a load at lower throttle positions, but it would often go away. It has started surging badly even at high speed that the hydro surges. It's no issue with the mower deck since it smooths right out, but I don't like it still..41 posts · Joined 2009. #1 · Feb 2, 2010. I have a 2006 F350 6.0L S&B intake, Diamond eye dual 4", SCT Livewire. I dont know if anyone else is experiencing the same problem with the new ford flash, but with 5 different SCT tunes, I have a bad surging under acceleration starting at 2800rpm. As the engine gets warmed up, the surging isnt a ...STEP 1. Verify that the throttle control is adjusted properly as follows: - Move the throttle control to the Choke position. - In the Choke position the arm attached to the throttle cable at the engine should bottom out at the arrow (1). Choke. Full Throttle Idle Throttle Engine Off (BBC version) 2 1.Broadcom (AVGO) Surges, Opening the Door to Further Gains...AVGO In my April 13 review of Broadcom (AVGO) I wrote that "AVGO looks like it will rebound from the rising 50-day movin...I have a gravely 991069 kawasaki engine 0053 fr691v. Have 30 ac at stator wires. Regulator was showing 8 vdc so replaced. Now showing 14 vdc. Engine still does after battery gets too low. Is this expe … read moreMessages. 2. May 8, 2015 / Surging on new Briggs. #1. I bought a zero turn mower with the 25 hp Briggs professional series engine (model 440000) that is 6 months old and has 8 hrs on the clock. After I changed the oil to 5w-30 synthetic, it started surging when it is not under load. Is this just a coincidence or could changing to synthetic oil ...piston slapper. a common problem that causes engine surging is dirt ingested into air jets. these are usually found in the carb throat behind choke plate. blow thru the jets with carb cleaner.these jets provide the air in the air/fuel mix that runs engine.Swapping out a fuel filter. One of the solutions to fix a surging lawn mower engine is by swapping out the fuel filter. A clogged fuel filter can cause issues with the flow of fuel to the carburetor, leading to fluctuating revving and surging of the engine. If you notice your lawn mower surging at full throttle or the engine surging up and down ...Inspect the vent on your gas tank’s cap and clean it if it’s dirty. Drain the gas tank, clean the gas bowl, and add a fresh batch of fuel. Or you can inject fuel cleaner to clean the fuel line. After changing the fuel or injecting fuel cleaner run the lawn mower as usual. Caution: Make sure the fuel is below the maximum gauge level. ….

12486 posts · Joined 2004. #12 · Oct 25, 2012. Once the throttle bodies are fully open (full acceleration), and the engine RPM's get high, then the injectors must deliver a full flow of fuel. If the fuel pump is getting weak, then the injectors can't deliver enough fuel to keep the engine running properly.Once the engine warms up and at full throttle the surging is still noticeable. Surging is generally indicative of a lean fuel condition. Be sure there are no air leaks at the intake manifold. The easiest way to check this is to spray Wd40 (or similar) around the intake manifold while the engine is running.Kawasaki engine (fh601v) troubleshooting ... If I can ease the throttle up and get it to full throttle it will do fine. The only time it does this is at startup and when I engage the pto. Any thoughts would be greatly appreciated. I have mixed some seafoam in the gas to help but it had no affect. The mower has 190 hrs on it.The job of replacing is simple and will solve the surge. The process is as follows: Remove the spark plug wire - prevents the mower from starting. Remove - Remove and clean the air filter and filter housing - Clean it using soapy water, and when dry, smear some engine oil over the surface of the foam.Set the throttle control to a low rpm position. Secure the throttle to the idle position with a piece of wire and start the engine. With one finger, push the governor arm the the direction that will close the throttle. while doing this slowly open the throttle (manually - release the securing wire). As the rpm increases, slowly reduce the ...5. Nov 24, 2014 / John Deere D110 Surges at all throttle positions. #1. I have a JD D110 and the motor surges up and down through all throttle positions. I can see the governor rod moving back and forth. The mower only has 80 hours on it. I have done all the required mtc on the mower so far.The job of replacing is simple and will solve the surge. The process is as follows: Remove the spark plug wire - prevents the mower from starting. Remove - Remove and clean the air filter and filter housing - Clean it using soapy water, and when dry, smear some engine oil over the surface of the foam.5 posts · Joined 2010. #1 · Apr 4, 2013. I have a 2007 exmark turf tracer hp with a 17 hp kawasaki motor. Has maybe 400 hours. Engine has been surging from idle to nearly full throttle. Doesn't surge at wot but engine doesn't sound smooth. I have done research and tried all the secrets and tricks on here. I've had the carburetor off 8 times ... Kawasaki engine surges at full throttle, Recently purchased a used 2009 Vulcan Classic with 800 miles that had been sitting for a while. Noticed that it was having an issue going over 70mph, figured it needed some TLC. Checked the fuel tank, and low and behold, rust city! Cleaned the tank thoroughly, and rebuilt the fuel pump (motor and filter were pretty nasty)., Throttle control on BBC engines. The methods for checking and adjusting RPM and Full Throttle position is the same on all the Kawasaki FJ180V engines. We are illustrating the procedures on the BBC engine for clarity. FJ180V KAI Engine Specifi cations used by Ybravo: “M22” used on 21” Zone Start - 3300 RPM, 3 posts · Joined 2006. #1 · May 29, 2007. I have a 34Z Gravely with a 15 hp Kawasaki and this is whats happening. When we start it up when it is cold it runs fine. After it warms up it starts to miss on one cylinder. I changed the coil but it didn't seem to help. Has anyone ever encountered this. Your help would be greatly appreciated., LowRider. bad throttle cable or could be an air leak. Check the carb see if its loose or get some WD-40 and spray it around it (don't soak it) and see if that helps before breaking into the engine. do the easy stuff first not the hard stuff. the engine should either rev back down to normal or it might rev up a little., Move the throttle to the FAST position. Pull the PTO switch up/out into the ENGAGED (ON) position. NOTE: When operating the tractor be certain that the throttle is always in the FAST position. Operating with the throttle at less than full throttle may lead to premature battery wear and a poor quality cut., 26 posts · Joined 2016. #9 · Mar 1, 2022. Kawi has an engine fuel safety feature when you quickly decelerate the fuel is actually cut off causing the backfire. it is an ECU issue. have the ECU flashed by Ivan and it will take care of the problem. Watch his video it explains the whole issue,, engine cuts out at full throttle. Jump to Latest Follow ... Pro-Fill tank pre filter, LE wheels, 4500lb Super Winch, Kawasaki Cargo box, custom floor protectors, Boss ATV25B Bluetooth speakers/amp, Kawasaki soft top, Half shield, Kawasaki LED Headlights. _____ Sold:2011 550 Grizzly Steel Blue/Cast Wheels,Moose Hand gaurds,Elka stage 1 shocks ..., Go ahead and remove the filter, run the engine, if the smoke clears, replace that filter. Check Air Filter - Wet or dirty filter is a common cause of black smoke and it's easy to check. Clean air is as important as fuel. Filtering the air before it enters the engine prevents grit from damaging the carburetor and engine components, it also ..., This reply was modified 5 years, 5 months ago by fleetwin . As Ben noted, surging can be caused by crankcase leaks or some other source of air leaks, perhaps in the fuel line or a bad carburetor or reed plate gasket. "Every 20 minute job is only a broken bolt away from a 3-day project."., My mower has the 24hp kawasaki EFI 750 engine and when dropped to idle it slowly settles into a never-ending cycle of pulsing the throttle to try to attain the target idle revs. If you bump the gas up, it cuts the fuel back and settles into the same pattern quite quickly., GX345 Surging Engine Problems. I have a JD 2005 GX345 garden tractor with a 20hp liquid cooled Kawasaki engine. I am having trouble with the engine surging after it warms up very badly. I have done the following things to rectify the problem with no success. Couple of hints: When I run the PTO (blades) it runs like a top., The throttle body is an important part of the vehicle that allows air to flow into the engine. As with all combustion, air is required for an engine to fire properly. Generally, th..., I have a 357cc powermore motor & for the life of me can,t stop it from surging.or find the correct location for the carb. spring, it was kinda hooked up jerry rig style worked okay for one storm,, now surges at low or full idle. Not as bad with choke on,,dirty fuel pluged carb,, worth tearing apart or geta new carb & spring. Anybody. Tia.., Just picke up my truck after being in dealer 25 outta 28 days. Went to turn to start on entrance ramp. Went 1st gear 2 gear. Then lost all throttle response. Engine was at idle. Got coasted off side of ramp. Were truck sat idling in gear mash on throttle up and down, engine rpm didn't change a bit. Repeated probably 20 times truck just sat ..., Take the screws out and pump grease into the top one until it comes out of the bottom one. One thing you'll notice is that while all the parts on the engine on the FG100 are metric, while the lower unit is all SAE. Take a look at the Earthquake mini tiller, compare the parts lists of the two, and see what you think., Jun 9, 2022 / Kawasaki FS481V Surges. #4. bertsmobile1 said: You have an obstruction in the fuel system or the valves are way out of adjustment. Thanks i was wondering about the valves i had read that a stuff intake could be part of the story, I used all OEM Kawasaki parts I will check the actual fuel line and pop the valve covers., Hi, I have a 2010 Kawasaki FR651V 22 HP v twin. It just started surging as low RPM. I have clean 100% gas, fuel filter was changed about 30 days ago and the air cleaner is clean and new. Looks like the governor is possibly the problem but before hauling to shop I wonder if there is another possible issue causing the surge. Any ideas?, if your Kawasaki lawn mower engine throttle is all the way down and still idling too high this is how you can adjust it to where it'll idle lower.After doing..., If you notice that your Kawasaki lawn mower engine is surging, there are a few possible causes. First, check the air filter to see if it is clean. A dirty air filter can restrict air flow to …, 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 ... , 24,705. Aug 8, 2017 / FX850V high idle issues. #2. If it only runs with the choke 3/4 closed then it is not getting enough fuel. The carb might need to be cleaned. The fuel cap might need to be cleaned if it vents through the cap. If it has a charcoal filter tank vent then that needs to be taken off to ensure it is not the problem., Jul 23, 2017 · Recently, it started surging and stalling after running for about 30 minutes, whether under load (blades) or not. The automatic choke seems to be the cause as I can see it opening and closing when this happens. I read a few posts on various forums about this issue and have done the following: New spark plugs. new air filter. new fuel filter. , The surging/fluctuating/bouncing idle has been like this since the tractor was given to me. It happens at partial throttle but not full throttle. ... According to Tractordata your engine is a Kawasaki FH491V. I found some into on-line that shows where the various screws and jets are on the carb., Most two-stroke engines have two screws that allow you to adjust the carburetor. One of these screws adjusts the mixture of the gas/oil/fuel mixture, and the other screw controls the speed of the idle. To adjust the carburetor, you need to have the engine running. Slowly turn the screws to adjust the carburetor until the engine is running smoothly., Tweet. #1. Trailblazer surging. 06-24-2009, 10:21 AM. I have been noticing the last couple of days my trailblazer 302 has developed a surge when I quit welding before it drops to idle. I don's suppose it hurts anything but I don't like it and it's never done it before. It is not really noticeable while I am welding., 👇Click here for the full video👇https://youtu.be/QtCAehETLBEA simple fix for a surging John Deere X300 or any mower with a twin Kawasaki FH491V 17hp engine...., NE PA. Tractor. 2010 MF 1529, Woods ZTR MZ1952, National Mower sickle bar circa 1963. Before getting into the carb, I'd suggest pulling the fuel line off the carb and letting the gas run into a container for 10 -15 minutes, to see how the flow is. Aug 26, 2011 / Engine Surge / Stall on John Deere EZTrak z445 #10., Common Causes of Backfire: Lowering engine speed too fast. Gasoline, which contains higher blends of alcohol. Carburetor adjustment set too lean. Muffler construction can induce backfire. Higher than normal engine temperatures. Some carburetors can induce backfire due to the sensitivity of internal transitional passages., When a Kawasaki engine revving fluctuates, this is known as “surging” and it is a direct result of inconsistent volumes of fuel and air being delivered to the engine’s combustion chamber. The problem will lie with the fuel filter, injectors, lines, or the carburetor. Remember, combustion requires both fuel and oxygen., 5 posts · Joined 2014. #1 · May 25, 2014. My Hustler 60" deck Mini-Z has a 23HP kawasaki FH680V engine that has a problem no one has figured out. It has run great for 750 hours but now after about 15 minutes of operation under load the engine starts to surge for 20-30 seconds and then shuts off. I noticed that the governor arm goes up and ..., You are supposed to hold the throttle wide open during the test. I would repeat the test with wide open throttle, but the numbers are indicating a problem with the rear cylinder. Once you have repeated the test, remove plug and add a teaspoon of engine oil to the cylinder with the lowest compression and then repeat the compression test., New Kohler 6.5hp SH Series surges intermittently at full throttle. Mechanic's Assistant: ... 22 years and 4 dealerships.Deere,Cub,Stihl,Kohler,Kawasaki,Briggs.Seen and repaired all of it. ... i have a cub cadet zero turn with a kohler 7000 series engine that surges. I have replaced carburetor, fuel filter , spark plugs with all kohler parts., 1 post · Joined 2017. #1 · Jul 14, 2017. I've had a rough idle with my mule for a couple weeks now. Runs well under load but dies, surges and idles horrible. I've cleaned the throttle body, ruled out bad gas, changed spark plugs, checked the fuel pump and filters. The only thing I've been able to determine is it's running very rich.