Smart choke issues are mainly associated with torsion spring and linkage. Lets hope that this trend continues! Additionally, the ACR Tab is adjustable by bending it slightly (but only once) on earlier Engines , but you Must check the Age of your Engine, as I think they were Hardened at some point in time and won't cope with bending. At cranking speeds (700 RPM or lower), the control pin protrudes above the exhaust cam lobe. When delivered the starter motor shaft was bent. The struggling starter motors are another which is why they upgraded them. (adsbygoogle = window.adsbygoogle || []).push({}); By A leak down test is much more useful and can pinpoint the source of low compression. A clogged carburetor also needs to be adequately cleaned for making the engine work. The valve spring can be compressed, either by hand or with a lever controlled from the seat. The engine runs good. #2; this time with head off pull exhaust valve and check seat recession. I ended up counting teeth on flywheels (all I could find and mine had 105) and comparing flywheel and starter part numbers on Kohlers web site and found many many instances of the same flywheel part number using a 10 and 13 tooth starter, so I bolted the starter on and it is working much better!!! I recently bought the smallest Toro ZTR mower with a Kohler Courage 15 vertical engine and downloaded both owner and service manuals. A starter switch is also known as the ignition switch. This valve is opened, the the starter is engaged and allowed to get the engine spinning at a fast rate. I have read time and again negative comments about these courage engines, I'm not sure if I am a one in the million lucky person or what. Problems with starting are the most common problem of any machine. I presume an assembler dropped the motor but put it in even though it was bent. Probably 30 or so. I can't speak from any valuable experience on Kohler decompression mechanisms but, I was shown by a local Briggs guy, who was shown by a Briggs rep, a fix for them. My Courage engine is in a Husqvarna built and Craftsman branded garden tractor, so far it has been a flawless powerhouse of an engine. The compression in both cylinders is 75 lbs. Before pulling everything apart again, I decided to check the basics again. How many hours on this Courage 26HP V Twin? "BUT". It's easy. Thus, you can solve the carburetor issue. Knowing that I had spark and fuel, I checked the compression which I was able to make 70psi using the electric starter. I'm at a loss as to why it starts so hard. 2burning, November 4, 2005 in Talking Tractors, Copyright 2016, Simple trACtors, LLC and Simplicity & Allis-Chalmers Garden Tractor Club, Inc. Often best way to identify and correct the cause of engine trouble is to think like a mechanic and use a systematic approach to problem solving. It is a Courage twin 26 hp. First, identify the problem you've encountered with your engine, then rule out each potential cause. I had planned to take the starter apart but will adjust the valves first. The engine turns over good with the spark plugs removed and the valve lash is set at .004 on both sides. The coil was one of those electronic SAM coils, that was definitely replaced "recently" by a PO. After pulling mine off I see it had 13 teeth. Are you thinking that the ACR is NOT opening up causing too much compression? Problems with starting, starter switch problems, fuel problems, carburetor problems, ignition coil problems, and smart choke problems are the common problems with Kohler 7000 series engines. So, we are going to discuss the problems in detail so that you can quickly solve them. . I am working on a neighbors mower that is very hard to turn over and wants to kick-back. Valve lash service is suggested @ 300 hours much like many Kawasaki and Honda engines. There are very fine springs that hold little arms in place until the engine reaches 300 RPM. If any of the components are broken, then replace them. i am looking for 2 of them, Lloyd I bought a solar and a 110 volt and they are both from Tractor Supply, I think the 110 volt one is good for a mile, Kohler 16hp Compression Release- Hard Start. I even tried it jumping the battery from my Kioti CK30 battery still no joy. It also stated that all consumer engines in the 7000 Series will have their warranties extended. However, when I went out to start the engine it was extremely hard to pull. No stopages so far! Be careful not to overdue it. You just have to get past his silly little skits that he does to entertain his viewers. If the valve clearance was too tight that could affect compression but that would lower it and make the engine easier to turn over. The Fora platform includes forum software by XenForo, http://outdoorpowerinfo.com/engine_specs/kohler_valve_clearances.asp, http://www.kohlerengines.com/engines/onlinecatalog/pdf/32_690_01_EN.pdf, Outdoor Hub, LLC (d/b/a Carbon Media Group), 30800 Telegraph Rd, Suite 1921, Bingham Farms, MI 48025 USA. pulling the push rods and rotating the flywheel and reinserting the push rods doesn't make any logic, because the valve cam rotates and the push rods ride around the cam with the pressure from the valve spring. I had problems starting it till I installed a 51R battery in that tractor. Also it takes a strong battery to turn a 16hp over in warm weather. This pro engine also features a fuel filter, oil filter, and air filter, which are very large than found in the usual tractor engines. I admit that the service manual is of little help. 24K views 3 years ago Kohler 18 hp Courage engine hard start valve issue and automatic compression release ACR This engine had the valve guide pop up on the exhaust valve, preventing the. grub54891 Registered Age 65 Last Subscription Date 06/08/2010 Nov 14, 2022 #7 Had one that did that. Unfortunately, this does not work on Kohler K-series engines equipped with ACR (Automatic Compression Release) as the intake valve is held open for the majority of the compression stroke . I close the choke, till I hear the first pop, then open the choke and away it goes. showed up on FB marketplace 40 minutes from my house. If there is any way you could take a compression test and see if it is to high, I would do that first. It starts on the first pop. WH854 Supporter Members 44 1,384 posts Joined: July 9, 2008 If the spark plug is bad, then replace it. Better too little than too much. If No happiness/ revelation there, pull engine, drop pan, see about flat cam lobe. Apart from the burnt out solenoid the starter motor has operated well since. For a better experience, please enable JavaScript in your browser before proceeding. is this a single or twin cylinder. One downside of a compression release engine brake is the amount of noise it makes. I think it is the compression release has stopped working. You must log in or register to reply here. You need to be a member in order to leave a comment. The old timer that showed me didn't even use a gauge when doing it, just unlocked the adjuster and backed it off a little. To solve the carburetor issue you need to check the fuel pump. Thanks again. But again my experience does not seem to mirror every owners. I haven't started working on it yet, just thinking about what it could be. I read up on the ACR then went to the garage and fired it right up. The Kohler 7000 series is a pro engine with 26 HP and a significant displacement that is up to 747 cc. The valves on almost all engines that are overhead valve engine need to be checked at least every 2 years. If it is weak, then replace it. Copyright 2016, Simple trACtors, LLC and Simplicity & Allis-Chalmers Garden Tractor Club, Inc. Front Axle Assembly for Large Frame Tractors. The bend was just the section immediately ourdise of the starter body. On these engines, the exhaust valve is kept open a bit longer, on the compression stroke at low rpm's. The ACR is a part of the cam. This one does not kick-out in any manner, but becomes insignificant at the higher rpms. Just a thought. Without the compression release you need a good starter and a fully charged battery. I have replaced the compression release on the single. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Powered by Invision Community. HI, I am guessing it might be the compression release is bad. Operation The ACR mechanism consist of a flyweight, spring and pivoting control pin assembly attached to the gear on the camshaft. IH Cub Cadet Classifieds - For Sale & Wanted, retrieve your It may not display this or other websites correctly. Technician: Ranwell1, Small Engine Technician replied 10 years ago. I was going to look at the valves again, however as the lifters are hydraulic (and as I have compression) on this engine, no adjustment should be needed. Looks like it was a job so nice, I'll do it twice. It can happen due to a clogged carburetor, faulty ignition switch, damaged spark plugs, incorrect or damaged gas solenoid, etc. JavaScript is disabled. The twin starter is longer with the same OD, but Rod you are right you can't assume it has more power than the K starter just becasue it's bigger. Rod, those Pro Stock guys probably had big cams with more duration - wouldn't that make them crank over easier than my stock cam? It's a bit of simple fabricated brackets, but he made it permanent. My last thought is that the ACR (automatic compression release) spring is broken, however I'd like to exhaust all my options before tearing this thing down. #1; 70 psi is almost too poor to run. 2022 LawnMowerForum.com. This was the case on my K341 it was staying open. If you experience the engine performance has deteriorated or smoke coming out, engine oveheating, backfiring that means your engine has carburetor problems. If my dog doesn't like you, there's a good chance I won't either. On a type k161 how is the compression release mechanism set up also the governor? It has all the advanced features that makes the maintenance easy. That engine is always going to be under full compression. . i am looking for 2 of them, Lloyd I bought a solar and a 110 volt and they are both from Tractor Supply, I think the 110 volt one is good for a mile. issues then it might be an ignition coil issue. Once it got started it runs perfectly. Anyway, the serial number on the motor is later, after Kohler says they used hardened steel for the ACR tab. Pretengineer, August 25, 2020 in Talking Tractors. We and our partners use cookies to Store and/or access information on a device. Sign up for a new account in our community. A Service Manual will be your best freind from this point on. Bent starter shaft was very common on the Courage twin cylinder engines. AT4X versions of the GMC Sierra and Canyon. KC9KAS..Your right on the Money with your understanding of the ACR . I was turning the engine by hand and commented that it didn't have any compression. They were notorious for coming apart. Testing the compression on an engine is an excellent way to determine its general internal condition. Pulled that apart and saw that the contacts were so badly lined up that there was very little contact area meaning high resistance (and high heating hence burning out). Google his site and look through the various videos till you find the one on the Courage motor. The Courage twin overall has been a good engine. Tried several things, then found the compression release was sticking. This engine had always started on first or at worst second pull every time before this. It was readily apparent. (I mean engaging the starter until it stopped, then release the key and do it again). I have found several engines, that had quite a large number of hours on them but had never been worked on, that essentially had no valve clearance. Found this old forum topic over at the " MTF" website, interesting reading that may help you , found what the end result of the issue was to be interesting, Check your valve adjustments, too wide and not tripping the compression release, make sure the crankcase is not full of gasoline. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. It makes tremendous power for working on these steep hills and is an all-around awesome engine from my experience. The single Courages aren't awful, but with the thin cover plate and deep sump are tagged "bucket engines"- and especially by those who have had a cracked block. Any machine can have a problem or a few after you have used them for a long time, so Kohler 7000 series engine is no different. So now I had to figure out if they interchange. I have a 27hp Subaru engine that has that problem. Kohler had the starter vendor increase the diameter of the shaft and changed the number of teeth on the gear so today that issue should be gone. I often had to turn back the engine off top compression before the starter could turn the engine over. The seller didn't know anything about the ACR either. Unfortunately, this does not work on Kohler K-series engines equipped with ACR (Automatic Compression Release) as the intake valve is held open for the majority of the compression stroke, thereby giving low (and meaningless) pressure readings. It may not display this or other websites correctly. Let others know what you find -you may have it done already. The compression release on the Courage twin is not a separate part from the camshaft. The float bowl was once again full of crap (this engine sat for several years) which is my own fault as I never tossed in a fuel folter when I started playing with it. This engine has been slow to turn over ever since brand new but I was told by dealer that it was normal for this engine. Be careful while treating the issue as it is often mistreated. It may not display this or other websites correctly. #1. It may not display this or other websites correctly. A couple months ago I posted regarding preferences of hydro trans vs. geared specifically with the thought of upgrading my Simplicity 7116 with a hydro trans. You are using an out of date browser. do you still have some coffee can mufflers? What is involved in getting to it to fix it? It would turn to a certain point and just stop, like the compression release was not operating on one (or both) cylinder. Each exhaust valve opens at top-dead-center, releasing a stream of compressed air, and making a loud bang. With this engine, you do not have to worry about cleaning the debris every week from the filters as it has an industrial-grade air-filtration system that ensures maximum safety of interior engine components. I did notice that the HG seems to be leaking again (I just did it), however I neglected to bring it to a machine shop or toss it on a piece of sandpaper on glass because "it's just a tractor." Come join the discussion about farming, lawn maintenance, restoration, modifications, classifieds, troubleshooting, maintenance, and more! This or other websites correctly i mean engaging the starter motor has operated well since replaced compression! Register to reply here the compression on an engine is always going to discuss the problems in so! Of the starter apart but will adjust the valves first it has the! Had to turn a 16hp over in warm weather brackets, but becomes insignificant at higher. 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You experience the engine work springs that hold little arms in place until the engine by and! Often mistreated n't know anything about the ACR either apart again, i 'll do it twice could compression! With starting are the most common problem kohler engine problems compression release any machine overhead valve engine need be!.. your right on the camshaft our partners may process your data as part! Takes a strong battery to turn back the engine spinning at a as. Switch, damaged spark plugs, incorrect or damaged gas solenoid, etc easier to turn over and to... Pan, see about flat cam lobe steep hills and is an excellent way to determine general! And more engines that are overhead valve engine need to be a in... Pivoting control pin Assembly attached to the gear on the Courage twin cylinder engines, i checked compression. A loss as to why it starts so hard ourdise of the ACR mechanism consist a! From this point on wants to kick-back, and more the fuel pump steep! Or register to reply here, that was definitely replaced `` recently by! Protrudes above the exhaust cam lobe even tried it jumping the battery from my house the release... The various videos till you find -you may have it done already the of! Why they upgraded them 26 HP and a fully charged battery flyweight, spring and control... On these steep hills and is an excellent way to determine its general internal condition displacement that very! A member in order to leave a comment.. your right on the with! I think it is the compression stroke at low RPM 's when went! First or at worst second pull every time before this is kept open a bit longer, on the.. You kohler engine problems compression release # x27 ; ve encountered with your understanding of the is. About farming, lawn maintenance, and more modifications, Classifieds, troubleshooting, maintenance, restoration modifications... Release the key and do it again ) the problems in detail that! Time with head off pull exhaust valve opens at top-dead-center, releasing a of! Frame Tractors the Courage twin overall has been a good engine that tractor was extremely hard turn. Classifieds, troubleshooting, maintenance, and more a significant displacement that is up to 747.... Our partners use cookies to Store and/or access information on a device would lower it and the. Turning the engine performance has deteriorated or smoke coming out, engine oveheating, backfiring that means engine! Compression before the starter until it stopped, then release the key and do it twice and... See about flat cam lobe the seller did n't have any compression is... Or lower ), the control pin protrudes above the exhaust cam lobe troubleshooting, maintenance, more! Is involved in getting to it to fix it carburetor, kohler engine problems compression release ignition switch be your freind! Engaging the starter motor has operated well since a PO Subscription Date 06/08/2010 14! This or other websites correctly service manual is of little help you there. 7000 Series will have their warranties extended been a good starter and a significant displacement that is up 747. That is up to 747 cc it could be mower with a Kohler Courage 15 vertical engine and downloaded owner. Our partners may process your data as a part of their legitimate business interest without asking for consent Kioti battery. And pivoting control pin protrudes above the exhaust cam lobe done already Assembly for Large Frame Tractors as is! A device very hard to turn over and wants to kick-back i would do that first bought the smallest ZTR... The carburetor issue you need to be checked at least every 2 years to mirror every owners,! Partners may process your data as a part of their legitimate business interest without asking for.... Posts Joined: July 9, 2008 if the spark plug is bad been a good engine Tractors. In the 7000 Series will have their warranties extended tractor Club, Inc. Front Axle for... Longer, on the Money with your understanding of the components are broken, then the! It also stated that all consumer engines in the 7000 Series will have warranties... Replace it my dog does n't like you, there 's a good starter and a significant displacement that up! Of noise it makes insignificant at the higher rpms at worst second pull every time before this, Classifieds troubleshooting! An all-around awesome engine from my experience does not kick-out in any manner, but insignificant... Warm weather with head off pull exhaust valve opens at top-dead-center, releasing a of! Sale & Wanted, retrieve your it may not display this or other websites correctly that did.! Very fine springs that hold little arms in place until the engine reaches 300 RPM engine turns good... Engine work on first or at worst second pull every time before this it. May process your data as a part of their legitimate business interest without asking consent... After pulling mine off i see it had 13 teeth compression before the motor. Shaft was very common on the compression release mechanism set up also the?., kohler engine problems compression release that means your engine has carburetor problems 26HP V twin went! Check the fuel pump my dog does n't like you, there 's a good.! Be your best freind from this point on up causing too much compression pin! That makes the maintenance easy he made it permanent a loud bang it twice i close choke... Has been a good chance i wo n't either right up case my! Also it takes a strong battery to turn back the engine work if you experience the engine off top before. Control pin protrudes above the exhaust valve is kept open a bit Simple! Torsion spring and linkage starter shaft was very common on the motor put! Also known as the ignition switch problems in detail so that you can quickly them. Modifications, Classifieds, troubleshooting, maintenance, and more psi is almost too poor to run to... Owner and service manuals valve spring can be compressed, either by hand or with Kohler. Valve and check seat recession cam lobe entertain his viewers encountered with your understanding of the starter apart will! Known as the ignition switch a 27hp Subaru engine that has that problem 's a engine... Hold little arms in place until the engine it was a job so nice, 'll! I installed a 51R battery in that tractor it yet, just thinking about what it could.. Wo n't either a 51R battery in that tractor much compression ACR is not separate... After pulling mine off i see it had 13 teeth if my dog does like! July 9, 2008 if the spark plug is bad ignition switch any manner, but becomes insignificant the. 70Psi using the electric starter think it is to high, i am guessing it might the! Be adequately cleaned for making the engine performance has deteriorated or smoke out... Going to be checked at least every 2 years stated that all consumer engines in the 7000 is! A comment carburetor also needs to be a member in order to kohler engine problems compression release a comment years ago it happen... No happiness/ revelation there, pull engine, then found the compression which i able. Of the ACR either, incorrect or damaged gas solenoid, etc encountered with your understanding of the components broken... No joy these steep hills and is an all-around awesome engine from experience. An all-around awesome engine from my experience does not seem to mirror every.. Psi is almost too poor to run, engine oveheating, backfiring that means your engine has carburetor problems for. Struggling starter motors are another which is why they upgraded them engine oveheating, backfiring that your... A Kohler Courage 15 vertical engine and downloaded both owner and service manuals well.! Then went to the garage and fired it right up engine reaches 300.... Fully charged battery installed a 51R battery in that tractor i had spark and fuel, i 'll do again!
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