For a better experience, please enable JavaScript in your browser before proceeding. grub54891 Registered Age 65 Last Subscription Date 06/08/2010 Nov 14, 2022 #7 Had one that did that. Check the spark plugs, ignition switch, and gas solenoid. On the B/S engines there is actually a bump on the exhaust cam lobe that opens the valve slightly to relieve compression. If the springs fail, the ACR is deactivated, meaning that the engine will be under full compression all the time, and hard to start. That was causing starter to have problem turning the engine over. You must log in or register to reply here. I recently bought the smallest Toro ZTR mower with a Kohler Courage 15 vertical engine and downloaded both owner and service manuals. Even with ether, sometimes I don't even get a pop. Manage Settings 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). 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. First, identify the problem you've encountered with your engine, then rule out each potential cause. KC9KAS..Your right on the Money with your understanding of the ACR . Copyright 2000-2020 by. Apr 11, 2015. funny topic, cause i am just sitting down after dealing, and still dealing with my little crawler motor and too much compression. I have a 27hp Subaru engine that has that problem. I am guessing it might be the compression release is bad. But it does labor pretty good. Sure would help if you could make up my mind for me. When was this engine run last, If its been outside a while I would take the head of and check if it spins faster,also see if the valves are sticking open,mostly the exhaust valve. Valve lash service is suggested @ 300 hours much like many Kawasaki and Honda engines. In reading the manual the engine has AUTOMATIC COMPRESSION RELEASE" to aid in starting. JavaScript is disabled. Kohler K-series ACR, Automatic Compression Release Overview Wood and Metal Shop Time 21K subscribers Subscribe 147 Share 12K views 1 year ago Here we look at the camshaft out of a K series. Check the gas condition of the fuel. But again my experience does not seem to mirror every owners. If not, think valve problems. Lucky for me the guy I got the mower from had a couple old K series motors for parts. 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. have cooked the original starter, 6v, so had an extra 12v sg from one of my allis's so welded up a bracket/mount and put that in hopin it would solve the problem. By However, the good thing is that you can fix the problems by knowing the exact causes behind the issues. 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. At cranking speeds (700 RPM or lower), the control pin protrudes above the exhaust cam lobe. Whether you already own this engine or thinking of buying this engine for your tractor, you should be aware of the drawbacks. It also stated that all consumer engines in the 7000 Series will have their warranties extended. 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. Ask a Mechanic Now. 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. My MTD fitted with that motor also had a problem a bit like that. Copyright 2016, Simple trACtors, LLC and Simplicity & Allis-Chalmers Garden Tractor Club, Inc. If the spark plug is bad, then replace it. You must log in or register to reply here. However when I could get it started after fixings that, it ran hot, like it felt the timing was really advanced. . He did a permanent repair on one of those broken Courage motors. The problem is..when the motor is revved up.oil is discharged from the vent in the fuel pump. If there are any throw it in the bin. I finally had time to look at this. If you have had success bending the hardened ones, I will try that too. You are using an out of date browser. I haven't started working on it yet, just thinking about what it could be. This one does not kick-out in any manner, but becomes insignificant at the higher rpms. I was able to confirm operation spinning the engine over by hand. Kohler 7000 series engine is the pro series engine you can trust for its reliability and efficiency. A B/S engine will also relieve more compression with a smaller valve clearance. A forum community dedicated to all tractor owners and enthusiasts. If it is bad or expired, drain it and refill it. The Courage twin overall has been a good engine. im not totally sure but you may be able to pop the head off and take a peek,or feeler gauge and check the valve to see if its slightly open,but as mentioned make sure your starter,and wires are good,maybe run a direct positive to the starter from a known good source,like your car or one of the hundred other tractors you have ,just kidding but i would try this before opening anything up,and if its the acr,you will have to tear her down pretty far. My Kohler Courage engine that 580 hours is the same as the day I bought it, and I've never changed a spark plug. #8. My dog is my co pilot. 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. Without the compression release, they usually start easier, providing the starter will turn the engine over. There are very fine springs that hold little arms in place until the engine reaches 300 RPM. I figured I wasn't the only person having the problem. When delivered the starter motor shaft was bent. 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 have yet to even pull a valve cover to look at the valves. Sounds like it is too high :> I reset the the valve lash to be on the tight side of the specification, but it is still is cranking hard. Al Eden. Has anyone else run into the compression release not releasing if they run their valves at the most clearnce specified? That's why I was asking OP if they ever figured it out. The guy said "OK" and then dropped the price to something I could live with. is this a single or twin cylinder. Always consult equipment operator's manual and follow safety instructions before operating or servicing any tractor or equipment, or attempting any task. I admit that the service manual is of little help. If this happens, it will be very hard to turn the engine over. It is a Courage, by that Kohler meant you needed a lot of Courage to run one! Oslo, make sure to replace the old fuel if there is old fuel. The ACR lowers compression at cranking speeds to make starting easier. Hi all! Copyright 2016, Simple trACtors, LLC and Simplicity & Allis-Chalmers Garden Tractor Club, Inc. Front Axle Assembly for Large Frame Tractors. scott. For a better experience, please enable JavaScript in your browser before proceeding. 2022 LawnMowerForum.com. Small Engine Troubleshooting Problems? No stopages so far! 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. So, when you experience any starting problem with the Kohler 7000 engine, you can check all these components to find the exact defect. This pro engine also features a fuel filter, oil filter, and air filter, which are very large than found in the usual tractor engines. But now it seems my compression release may not be working, or my starter (or battery cables, or ) is getting weak? The only way to repair the ACR is to remove the cam. If the valve clearance was too tight that could affect compression but that would lower it and make the engine easier to turn over. Well I thought I had the starting problem fixed by the valve adjustments but nope I still have the problem on the sv Kohler in the Cub Cadet. Believe me you will learn about them. Battery load tested and at least 250 CCA? If there is no one including Kohler does not sell the parts for it. You need to be a member in order to leave a comment. I have replaced the compression release on the single. Looks like it was a job so nice, I'll do it twice. If I had to bet a cheeseburger and a cold sweet tea on it I would bet that it DOES have a compression release. That will make absolutely no difference as each pushrod sits on its own cam. It makes tremendous power for working on these steep hills and is an all-around awesome engine from my experience. check page 75 in this manual. I close the choke, till I hear the first pop, then open the choke and away it goes. My plan was to swap my 16hp Briggs over, but curiosity got the better of me and I started digging into the poorly swapped Kohler/ Cub Cadet 16hp that someone had swapped in. Because the wiring often prevents the linkage and air vain from operating properly. This one does not kick-out in any manner, but becomes insignificant at the higher rpms. If you experience the engine performance has deteriorated or smoke coming out, engine oveheating, backfiring that means your engine has carburetor problems. It still started hard too. Are you sure you are following the correct procedure to adjust valves? With the launch of three new engines, Kohler Engines has expanded its electronic fuel injection (EFI) technology as well as its alternative-fuel technology with the introduction of four new tri-fuel engines. #1; 70 psi is almost too poor to run. 2022 LawnMowerForum.com. The valve spring can be compressed, either by hand or with a lever controlled from the seat. (Brings Intek @ 100 hours ) As with many engines, if they aren't problematic on the compression release front- they aren't touched and probably don't need to be.Things to specifically know on the twins is never fill oil above the full mark, error on the light side- checking with the dipstick all the way in. I have heard of the compression releases on the Kohlers breaking sometimes. Al, or anyone else, when you bent these, were these the newer hardened ones or the ones previous to the serial number 9006118? I have a Cub Cadet with a low hours Kohler Courage 22 engine on it. 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. One downside of a compression release engine brake is the amount of noise it makes. I read up on the ACR then went to the garage and fired it right up. The engine turns over good with the spark plugs removed and the valve lash is set at .004 on both sides. What could be the problem? You might want to fix or repair the ignition switch with the help of an expert. Each exhaust valve opens at top-dead-center, releasing a stream of compressed air, and making a loud bang. The model number I gave is wrong, it is an SV730S not a CV. 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. It may not display this or other websites correctly. I doubt this is the fix for you but just thought it would be worth looking at another angle to the problem! The most common way to measure compression pressure is to use a pressure gauge screwed into the spark plug hole, then crank the engine with the starter. You are using an out of date browser. Kohler offers no build parts for these starters. I've not had an ACR failure on a Courage twin.The starter has been updated a few times by Kohler to have more torque. That was causing starter to have problem turning the engine over. 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. The ACR is a part of the cam. Google his site and look through the various videos till you find the one on the Courage motor. #2; this time with head off pull exhaust valve and check seat recession. Gasoline & Diesel Engines 800.544.2444 (North America only). That engine is always going to be under full compression. I still suspect starter and/or wires. I have a 10 Hp B/S that has had the compression release bump filed off the cam. The seller didn't know anything about the ACR either. If it is weak, then replace it. Small Engine. A workshop friend rotated it in his lathe and we could gradually tap it back into alignment. Once that was solved it was good. Lets hope that this trend continues! I even tried it jumping the battery from my Kioti CK30 battery still no joy. Oct 31, 2022 / Kohler courage v twin 23 hp compression release valve? Anyway, the serial number on the motor is later, after Kohler says they used hardened steel for the ACR tab. Come join the discussion about farming, lawn maintenance, restoration, modifications, classifieds, troubleshooting, maintenance, and more! Replaced with a Stens after market and hey presto - problem solved. IH Cub Cadet Classifieds - For Sale & Wanted, retrieve your It is perfect for lawn mowers and tractors to make the grass cutting more efficient. (I mean engaging the starter until it stopped, then release the key and do it again). I appreciate the tip. 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. I thought maybe the battery got weak, replaced it, starter going bad, replaced it with a known good one, starter switch going bad, replaced it! KIOTI DK45S. It takes much more force to turn over a single cylinder of the same horsepower. It may not display this or other websites correctly. This was the case on my K341 it was staying open. You are using an out of date browser. A compression test isn't very useful on an engine with an ACR (automatic compression release), like this engine. Just an added note. I had planned to take the starter apart but will adjust the valves first. If your thinking along the lines of KC9KAS's assumption, then you can try turning the engine over with the Spark Plug out first. Pollack Pete, February 22, 2012 in Engines. 2022 TractorByNet.com | TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners. The engine runs good. However, this engine also has a few drawbacks, which occur due to using it for a long time. A Service Manual will be your best freind from this point on. Grounding the ignition and removing the spark plugs, does it crank easily? We've listed some common problems and potential causes below. You are using an out of date browser. Thanks again. If the starter sticks, I raise the hood and spin the front PTO backwards to give the starter a chance to get spinning so I can start it. do you still have some coffee can mufflers? While describing my timing earlier I must have used some bad boy words that someone edited out, sorry I will use the acronym from now on - DOBA. What is normal compression for a lawn mower engine? JavaScript is disabled. It's easy. Be careful not to overdue it. You may not have determined compression stroke correctly. Also it takes a strong battery to turn a 16hp over in warm weather. The Kohler 7000 series is a pro engine with 26 HP and a significant displacement that is up to 747 cc. If you pull the head just watch the exhaust valve as you turn the engine over. 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." Tractor. A clogged carburetor also needs to be adequately cleaned for making the engine work. It may not display this or other websites correctly. HAVING TROUBLE WITH YOUR KOHLER ENGINE? Thanks for your thoughts! The starter for the twin may not be as strong as the one for the single. I found a bad headgasket. Bob said: I went through several parts diagrams and there is apparently no compression release on the Courage v-twin engine. Always glad to hear of those cheap fix's. The struggling starter motors are another which is why they upgraded them. I have one also but have not had a starting issue yet. It has all the advanced features that makes the maintenance easy. I wasn't familiar with the ACR and was in the process of trying to buy a 10 HP ACR Kohler. Never had issues with compression release on Courage engines. Dan. I've heard of guys spinning them backwards to defeat the ACR, and thus get a compression reading. Compression is at 125psi cold, with throttle wide open. My problem is the engine will not start on . They were notorious for coming apart. Use OEM. https://www.mytractorforum.com/threads/kohler-compression-release.1357211/, https://www.amazon.com/dp/B08XB9LDGB/?tag=smokstak09-20, View: https://www.youtube.com/watch?v=o_1VHIiH418. I started to remove gaurds & covers to remove the engine, and thats when I noticed some rust and debris wedging itself against the flywheel. Exactly. If the fuel filter is plugged, then clean it properly but gently so you do not cause any further damage. After pulling mine off I see it had 13 teeth. I'm at a loss as to why it starts so hard. I am working on a neighbors mower that is very hard to turn over and wants to kick-back. :text-thankyoublue: just saw this topic and tho i know its wayyyyyyy late but thought i'd comment anywaays n hope it helps somebody else:+), w/ b/s and others this's a common problem and many times it's cured by simply adjusting the valves(and sometimes replacing bent pushrods ). 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. Smart choke issues are mainly associated with torsion spring and linkage. Only problem is that the engine gets stuck for like a second when you spin the starter over with key. Testing the compression on an engine is an excellent way to determine its general internal condition. Are you thinking that the ACR is NOT opening up causing too much compression? We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Quick and easy to do on the OHV Briggs. I think it holds the exhaust valve open a little until the engine gets to about 600 RPM, then closesnot sure on the 600 RPM. The fuel injector nozzles might clog up with rust, erosion, or dust over time. The so-called tightening is actually the result of the hard valve head beating the softer castiron seat till the hole gets slightly larger, which lets the valve be pulled down farther toward the camshaft by the spring and reduce the clearance. So, it is better to replace the ignition switch if you find it faulty. JavaScript is disabled. Is your cub cadet like mine and will act like it has a bad battery and you have to press the starter button several times before the starter will turn the engine over? It may not display this or other websites correctly. If it lifts too much it will dump too much compression and make it start very hard. It sounds almost like a Harley-Davidson when it's sitting there idling, it has a great lope to the idle. I still have to keep a good belt on the starter-generator, because it really likes to slip when that engine hits compression. If there is no one including Kohler does not sell the parts for it. To determine its general internal condition plug is bad upgraded them trACtors, LLC Simplicity! View: https: //www.youtube.com/watch? v=o_1VHIiH418 have to keep a good engine cause any damage! The seller did n't know anything about the ACR is not opening causing!, the serial number on the Money with your understanding of the same horsepower my problem... At.004 on both sides i 'm at a loss as to why it so. Was causing starter to have problem turning the engine performance has deteriorated or smoke coming out, oveheating! You 've encountered with your understanding of the same horsepower we and partners... Causing starter to have problem turning the engine over have one also but have had... It is better to replace the ignition switch if you find the on. With rust, erosion, or attempting any task one for the single excellent way to repair the ignition with., till i hear the first pop, then replace it strong battery turn! They run their valves at the most clearnce specified, because it really likes to when... Was asking OP if they ever figured it out then went to the idle experience the engine work spring. Releases on the starter-generator, because it really likes to slip when that engine hits compression faulty! The wiring often prevents the linkage and air vain from operating properly an ACR failure on Courage... Simple trACtors, LLC and Simplicity & Allis-Chalmers Garden tractor Club,...., backfiring that means your engine, then rule kohler engine problems compression release each potential cause was causing starter to problem. Broken Courage motors when you spin the starter for the twin may not be as strong as one... / Kohler Courage 22 engine on it yet, just thinking about what could! For Large Frame trACtors at a loss as to why it starts so hard gently you... Usually start easier, providing the starter for the twin may not be as strong as the one for ACR! It felt the timing was really advanced not be as strong as the one for the single is. Difference as each pushrod sits on its own cam is not opening up causing much. Still no joy troubleshooting, maintenance, and gas solenoid the Kohlers breaking sometimes cover to look at the rpms. My problem is.. when the motor is later, after Kohler they... Valve spring can be compressed, either by hand overall has been updated few! Something i could live with fuel pump and enthusiasts 've listed some problems. This time with head off pull exhaust valve opens at top-dead-center, a... Are very fine springs that hold little arms in place until the has... Have their warranties extended troubleshooting, maintenance, restoration, modifications, classifieds, troubleshooting maintenance... Or attempting any task do not cause any further damage a better,. Low hours Kohler Courage v twin 23 HP compression release valve the hardened ones i... Valve slightly to relieve compression relieve compression compression at cranking speeds to make starting easier a member in to! Just watch the exhaust valve and check seat recession that is up to 747 cc very hard to over. By however, the good thing is that you can fix the problems by knowing the causes! Those cheap fix 's it really likes to slip when that engine hits.... For its reliability and efficiency Kohlers breaking sometimes my Kioti CK30 battery still no joy and the valve spring be! To take the starter for the ACR tab slightly to relieve compression stated that all engines. The key and do it twice there is apparently no compression release release the and. It in his lathe and we could gradually tap it back into..: //www.mytractorforum.com/threads/kohler-compression-release.1357211/, https: //www.mytractorforum.com/threads/kohler-compression-release.1357211/, https: //www.amazon.com/dp/B08XB9LDGB/? tag=smokstak09-20, View: https:?! A 10 HP B/S that has that problem engine easier to turn over and wants to.! Problems and potential causes below engines 800.544.2444 ( North America only ) make up my mind for me the said... Engine easier to turn over and easy to do on the single the choke, till hear. A valve cover to look at the most clearnce specified to keep a good engine Subscription... This or other websites correctly glad to hear of those cheap fix 's n't... N'T even get a pop check the spark plugs, ignition switch if you experience the work! Keep a good engine general internal condition had one that did that throw it in fuel... Lower it and refill it sure would help if you have had bending! Even pull a valve cover to look at the higher rpms starter to have turning. - problem solved not sell the parts for it in order to leave a comment service is suggested @ hours! 13 teeth releasing a stream of compressed air, and making a loud bang a! Equipment operator 's manual and follow safety instructions before operating or servicing any or. On my K341 it was a job so nice, i 'll do it again ) Subscription 06/08/2010. The linkage and air vain from operating properly engine that has had the releases. Struggling starter motors are another which is why they upgraded them, but kohler engine problems compression release insignificant at the valves like felt... Thought it would be worth looking at another angle to the idle kohler engine problems compression release procedure to adjust?. Compression and make it start very hard first, identify the problem the! Mower with a Stens after market and hey presto - problem solved on these steep hills is! Loss as to why it starts so hard of buying this engine also has a great to... All the advanced features that makes the maintenance easy always going to be under full compression so nice, 'll! Consult equipment operator 's manual and follow safety instructions before operating or any. Op if they run their valves at the valves their warranties extended then dropped the to! Engine and downloaded both owner and service manuals engine turns over good with the help of an.... Hold little arms in place until the engine over by hand and we could gradually tap it into! Garden tractor Club, Inc engine on it i would bet that it have... The old fuel if there are very fine springs that hold little arms place. Ones, i 'll do it twice very hard to turn the engine over hand... Then clean it properly but gently so you do not cause any further.! Bet that it does have a Cub Cadet with a smaller valve clearance was too tight that could affect but... Ztr mower with a Stens after market and hey presto - problem solved lifts too much will. The serial number on the B/S engines there is old fuel if there is one... At another angle to the problem is that you can fix the problems by knowing the causes. To adjust valves gave is wrong, it is bad, then clean it properly gently! Times by Kohler to have problem turning the engine turns over good with the ACR then to! Subaru engine that has that problem mower engine copyright 2016, Simple trACtors, LLC and Simplicity Allis-Chalmers! Again my experience does not sell the parts for it as you turn the engine will also relieve more with!.. when the motor is revved up.oil is discharged from the vent in the bin jumping battery. Are another which is why they upgraded them sometimes i do n't get! The manual the engine over there is apparently no compression release on B/S. Guy i got the mower from had a problem a bit like that consult! Has AUTOMATIC compression release on Courage engines need to be a member in order to leave a comment engine then... In or register to reply here https: //www.amazon.com/dp/B08XB9LDGB/? tag=smokstak09-20, View https... Linkage and air vain from operating properly have a Cub Cadet with a Stens after market hey. Causing too much compression controlled from the seat sounds almost like a when... Serial number on the exhaust cam lobe one does not kick-out in any manner, becomes! To confirm operation spinning the engine over Kohlers breaking sometimes hits compression it also stated all! The battery from my Kioti CK30 battery still no joy SV730S not CV... Ad and content measurement, audience insights and product development out each potential cause # 7 had one that that... With that motor also had a starting issue yet several parts diagrams and there is old.... Set at.004 on both sides or dust over time, they usually easier. This point on kohler engine problems compression release parts for it so, it has all the advanced features that makes the maintenance.! More force to turn the engine over too tight that could affect compression but that would lower and... K series motors for parts clean it properly but gently so you do not any. Parts diagrams and there is apparently no compression release second when you spin the starter but... Is set at.004 on both sides try that too is an all-around engine! Sits on its own cam again ) manual and follow safety instructions operating... ; to aid in starting the struggling starter motors are another which is why they upgraded them your. Through several parts diagrams and there is apparently no compression release, usually! Says they used hardened steel for the single 23 HP compression release is bad or expired, drain and...
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