This video definitely answered a lot of my questions and thanks for going and sharing this useful information for all to see. Auto tune saws are the future and the better and more we know now the better off we will be. Keep up the good work!
Outstanding video ! This was extremely helpful to understanding the Auto tune system and diagnostic tools! I'm hoping I can get access to these. Our locals dealers don't have the skills to work on the saws they sell with Autotune. Thanks again !
I’m old school. I been running huskys since ‘79. I never had a day off do to a husky not running. I adjusted the low speed screw every fall and spiringtime. My air cleaners got cleaned every evening after cutting all day. My chains were sharpened too. This new technology scares me.
I deal with a lot of loggers and tree service guys, they swear by the autotune saws now... At first nobody wanted it, but now I hear its the only saw they grab haha. I've been told they prefer the high RPMS, these saws are like the old screamin Detroit diesels pinn it and hang on!
VERY very interesting! I have a 550XP and it runs great but it does have a small flat spot for the first 1000 revs from idol ! Other than that its a great saw! You pair are a hoot when you get together, cheers from Scotland
the problem is that I have to run the saw in when it has a hick up. the good is that my t540xp is so bad to the bone when it runs right. thanks for all the info guys!
Good morning Walt, This is an amazing video. I had no idea that Husky was putting computers in their saws now. I think I will keep my Hutzl 272 I can work on it. Thanks for the very informative video
yup....takes a dimension away form us who build saws....I think you will see more older "dead saw salvage" saws on the channel for those who prefer to roll their own.
we use to trap up here in northern ontario 250 beavers a year iv sebmerged 266xp under water quite a few times cuting around the beaver hut for years threw the ice and it always fired right back hope this saw can do that with a small chip in it good video
Interesting to see these saws can respond to a scan tool even though it doesn't seem to have a functional battery. Or does it? I wonder how it measures temperature and throttle position without electrical power.
Ignition is a generator as well. System requires very small amounts of power. Not every type of memory is "active" needing power. Non-Volatile Memory will retains it's data still after power is off. Everything is real time so all it needs to do is retrieve and update & rewrite to provide the operating history. A really simplistic system
Hi guys .that was a great video about autotune saws .looking forward to seeing more vids .will check out face book cheers. Peace and love from Scotland stu
I solved my own question, It doesn't figure the average by the number of starts. Also realized there are two types of Fuel Resets on the program. One is "Default Reset" and the other is "History Reset", so I sort of figured that out too.
Sorry...was in the Snow plow all evening... :( Please post some of your finding here! Good info for all. Maybe do a addendum video? Can add it to these comments? Might be surprised who watches a video on this topic!
Husqvarna 455's? The 455 and 460 aren't, just X-torqs. They released a 465 which is an Auto tune saw. Based on that chassis....but actually a bunch of differences. th-cam.com/video/nHAsi5wG-8o/w-d-xo.html
Only if you have an issue with the saw. I think bob's underlying point was if it isn't broke....run it! The only other reason to is if there is an update that significantly helps things.....and when that happens chances are you will hear about it here or other places on line.
Nice video! I have some questions: 1. The diagnostic tool is available just for dealers? 2. Is it possible to put the 562xp Firmware onto a 555 carb? Thanks!
Yes effectively you have to be a dealer. They really control their world tightly. Can't mix and match firmware as it does identify the carb and limit the options. The down side to all of these systems is the manufacturers have taken the tuning away from not only the customers, but the dealers as well. Pretty much have to in order to meet new standards. BTW why the older style saws are eventually not going to be sold as the manufacturers have to meet regulations and can't w/o this micro level of control. The GOOD news is even with modified saws, these autotune carbs seem to be able to adjust and supply enough fuel for the work saw builds.
@@afleetcommand really sad thay dont offer the diagnostic tool to the public for people who like working on thar own tools, all about money and control
@@afleetcommand I don't thank it would make it run better! But it would give ya the ability to change your own carb check for updates and look at the fuel trim and program a new carb for say a backup.Not that I thank it would fail prematurely ! But it's always good to be able to work on your own equipment , nothing is wrong with new tech as long as it's not locked behind a door
He doesn't do anything by mail anymore, has to walk in the front door. Actually a field reset on the saw is all most need to do, it will accomplish the same thing. If it's a new unflashed carb, that's the only time a dealer needs to be involved. My local dealer is CNY Farm Supply, I'll see if they will do mail stuff. Most don't want the hassle
I now own several auto tune saws and just cant get my head round the fact that the beauty of the two stroke engine is the simplicity of it. If you have been running saws all your life you know when your saw is not running good just by sound and feel alone exactly the same as tunning the high and low jets in the field, I know life moves forward but why the hell would you turn something simple in to complexity.....maybe im just getting old
Doing it real time like that keeps the EPA happy...and also by having that system take over the screw driver KEEPS the EPA happy. Actually .. I hear the same argument when ignitions went away from points..."Why the HELL would you put your self in a position if the bike quits, you can't fix it". The Autotune really isn't complex from a component perspective. I have yet to see one fail.
I have a 2016 model.. How do I know if I have an update... My dealer says there isn't one available... I bet there is one for my 562xp.. it sometimes start ruff on start up when warm. But other than that it runs great.
I know this is an older video but I rewatched it because I'm in the process of rebuilding my first Autotune saw a 576xp Autotune, a question I had was about clearing codes and updating the carb firm ware but after rewatching i think my question was answered. I understand that the carbs on the 576 are fixed per say and are not updateable is this the case? My local dealer told me that I would have to take a running saw to him so he could hook it up to preform any updates and clear any codes.
I understand that! Also why the surge in interest in "kits" of old designs. The AM folks are loving this as the desire to keep older saws in service helps their business. AND interestingly enough Husqvarna seems to have responded with literally cutting the price of the last generation saw cylinder kits in half. Saws like the 346, 372 original addition etc. It no londer makes sense to buy AM for those saws. Conversely some of the other brands are seeing entire kits as there is an interest in those older obsolete designs to the point there is a market for them in that form. Just an interesting time. I love my 562 and 555, but really prefer saws like that 365/372xpw blend and the 281's....:)
Any old 550, 545, 555, 562, 560, 2260, 2258 etc. with the Autotune with a plug can be updated. Even better ANY 555,562 can be updated with all the enhancements to this point and apparently the next set will retro as well Only the first gens like 576's and most of the Stihl with no plug are set as they came. Have to say those saws with the older layout and less of the heat issues really don't need to be upgraded.
My 575xp and 385xp with this non adjustable high and low speed screws run lean in the cold weather. I let them heat up before I can run them. Is this right?
not as much as you might thing. Some features like the assisted start and things in the cylinder that reduce rpm's & a little power relative to a 550. Most won't go wrong with a 545. A pro would prefer the 550 with the extra rpms and a little more power.
A dealer tool, find a good dealer. Most will plug in and do the report real time for a lot less than the investment required even if you were a dealer for CST.
So is there newer style carbs that aren't autotune that you can put on newer saws, i like the fact of turning low and high screw just simply because im a small engine mechanic and still can't get a software tool which sucks
No, and actually once you have the autotunes, you really don't miss the hi/lo speed tuning :) The new Husqvarna 550 mk2 and 572 are a mature offering and as reliable as the CDI's that replaced points. Bet you don't miss points either.
@@afleetcommand awe man that sucks, I found a site where I can buy the tool but wouldn't ever get husqvarnas updates is all but I could atleadt check things out and reset the carbs, and im not sure what i think about the points system im only 22 and learning so whenever I find a old saw that I just clean the points to get working again i almost like it to much haha
@@quadvloggs6876 If it is used, match it with the right ignition it will work. If it is new, the dealer you buy it from needs to flash it. Most will. Only the "nickle and dime" types won't. AND unlike a conventional carb, which is fixed along with the ignition system, Husqvarna continually tweaks and updates firmware so without changing components you get those benefits assuming u have a dealer worth their weight. Not to mention the ability to print out a summary of the saws' actual run history. For me the benefits far our weight the fact I don't have a set of screws..:) So not buying the premise ....from lots of time with both.
No. But the internals of any "Strato" saw like 40:1 more than 50:1..:) Autotunes work around those little issues. Might look at my later video and it will be more clear how it all works. th-cam.com/video/zlQau8S3GEs/w-d-xo.html
you do have some control to set the "start" point for the hi & low speed...then it iterates doing its thing. And yes it will try and compensate for issues and will to the point the carb can deliver. You will see that in the CST as well.....if you see all the carb setting rich to rich 1/3 of the parameters likely the saw has an air leak....things like altitude, heat, fuel mixture it will adjust for. Actually pretty cool system. They aren't as interested in having access hacked....its about the EPA. So yes in can mask to a point. But a person who understands how to interpret the cst data will see that immediately
Okay, I understand why you need a computer for fuel injection, but why put a computer on a carburetor? Exactly what is it doing, and how does it do it?
i am a dealer in vermont, jonsered and husqvarna, have you guys had to change the pop pressure on the new carbs. yet like i have had to do? just wandering, because there is only one other dealer in western ny that has had to do the same thing. its not a lot of carbs. but a certain few here and there. it saves the customer from having to buy a new carb. seems to work very well in the running and idle issues.
yes. i got to messing around with the needle and lever one day for curiosity. the customer had an issue with not idling after getting the saw up to temp. updated the software. was good for about 2 weeks. updated again. same problem. replaced carb. and updated. 2 months later he had the same issue.
i adjusted the lever down closer to the body of the carb. and amazingly it fixed the problem perfectly. he has had great luck with the saw ever since. it seems to have lots more acceleration from idle to WOT... idles like a dream and starts better when cold and at running temp. not that it matters but the saw is a jonsered cs2152. this was the first saw i did that had the issue. now i know what to look for on others. its a really simple trick that works well if the software update doesn't fix the issue.
Yup....bottom line is they STILL are carburetors! I'm dealing that type of fix on those AM MS660's as we speak, it won't fix the top end fuel issue because that's the main jet and simply the carbs ability to deliver fuel, but like adjusting needles on old Mikuni's it has an effect on low to mid range fuel mixtures! Good stuff.
I ported a 562 with a el46 carb and it was a good running saw before porting, but after porting it idles high and has a really bad bog off idle. If i put timing back to stock its runs nearly normal but still has a slight bog off idle. I called around to some dealers to see if they could reset the carb for me rather quickly. Some said they couldn't touch it for weeks, and another said they could squeeze it in. Watching your video I'm thinking I should just bring them the carb and talk them into resetting and updating it on the spot. It's very inconvenient right now to get to any capable dealer. Do you think theyll have an issue with me just bringing them a carb?
That's not going to help you :) Also I don't do anything through the mail. Would need the ignition/carb comb to bring to a dealer either on the saw or not to flash that carb. Would take them minutes even faster if you have the numbers off the ignition so all they have to do is plug it in to cst. But like I said that won't help your situation. Not going to go "lecture" but these saws require a bit of understanding....bigger isn't always better and the port timing is already right for a 14k saw.. Did a video a while back on the subject. But a popup and working the lower part of the transfer area is about the best way to tweak these along with a smart muffler mod. But instead of chasing the el46, go to a el48 and / or look for the air leak.. Might even check to see if the throttle cable is letting it get to closed.. ( cst will check that through the tpi ) Some folks has success tweaking the spring tension on the metering lever on the el46's to help the "bog" as well..even though its an autotune, it still has a carburetor!
afleetcommand I’ve read a ton of threads on the matter, a couple spike60 was involved in. And I ported it basically like you said. Cut the base, made a pop up, opened the lowers a bit, MM, little more timing. I know I’m not the only person who has done all of that and had success. What gets me is when I change the timing it changes how the saw runs entirely. Would like to start with resetting the carb first, then I’ll go through the normal procedures. If the 48 carb is needed I’ll go that route after the fact. It was normal running saw before porting.. Guess I’ll take the whole saw in.
@@yotaismygame CST will check throttle position so bringing it in does two things...latest firmware and checks for full throttle and closed throttle. But before going to an el48, vac test it. If you had the top end off and did any lowering of the cylinder for compression...have to make certain the flange isn't interfering with the case as well as the transfer caps. BUT the one I see often on the "hot rod" built by the pro's is the muffler bolts when tightened "jack" the cylinder up creating an air leak.
Dealer is the place to buy all things Husqvarna...what they do when they are done with a tool such as that is their business. ONLY the dealers can log onto the Husqvarna site and make use of the CST tool. It's a dealer only tool.
More EPA BS. Wait till you work on these diesels with DEF. High dollar repairs. Another headache for the tech and dollars out of consumer's pocket! Not dependable........ Fedex master tech.
Thanks for the video, informative. Trying to decide if having digital crap in my chainsaw is worth the risk/lower cost of a Husqvarna over a stihl. I had to stop watching and just listen half the time because all the camera movement was making me sea sick! ;)
The digital stuff is just as reliable as the typical cdi, the early "eco" saws had heat issues related to the mechanical design , in fact without the "digital" stuff they wouldn't have run as well as they did, the digital "autotune" is a net positive not a negative. The New Stihl's have digital stuff now as well, but are typically a little behind as Husqvarna was really the first to tackle that technology , The Husqvarna 550 MK II and Husqvarna 572 are much better than earlier versions, and have an excellent record so far. MUCH better than the first 550's and 562's along with the competitor saws of similar design. Have to in your mind separate the Autotune as a system from the basic saw design even though they are combined to make the saw. The issues seen in the older saws were not related to the Autotune igniton/carb system. Hope that helps.
@@afleetcommand no, i suspose my vision would be to supply me with the software to fix my own saw. Right to repair. This technology is good but you shouldn't have to go to a dealer for it.
I don't disagree, but for most they will never take that saw or need to take that saw for a CST flash of firm ware any more than most will pull the ignition off their older 372 for a better timing curve from the new ones. Same thing. My issue has nothing to do with that whole concept of self repair because in reality it's a non issue. My issue is yet again Husqvarna misses it with a killer product concept. CST packaged right would be the difference between the Husqvarna series of saw and the rest, giving a customer another toy to talk about and mess with, another widget that no other company has. Instead they suck it in and even make it tougher for their dealers to leverage. Rather than leverage it they hide it. But I came from the software industry in my early years and see a killer product concept that has been turned into a negative based on false premises and online BS. Could turn it into a open source style concept and just drag all tech types to the brand, a loss leader
Well I won't be buying one of those. The only reason I ever go to a dealer is to buy new chain for my Husky 61.Microprocessor controlled carburettors, you must be joking..
This video definitely answered a lot of my questions and thanks for going and sharing this useful information for all to see. Auto tune saws are the future and the better and more we know now the better off we will be. Keep up the good work!
Always appreciate the 'school time' with you and Bob, and always learn something. Change is always difficult. Thanks Walt!
Thank you Walt. These carbs and saws were definitely Greek to me this was very informative and a good explanation about what to expect.
Outstanding video ! This was extremely helpful to understanding the Auto tune system and diagnostic tools! I'm hoping I can get access to these. Our locals dealers don't have the skills to work on the saws they sell with Autotune. Thanks again !
I’m old school. I been running huskys since ‘79. I never had a day off do to a husky not running. I adjusted the low speed screw every fall and spiringtime. My air cleaners got cleaned every evening after cutting all day. My chains were sharpened too. This new technology scares me.
I deal with a lot of loggers and tree service guys, they swear by the autotune saws now... At first nobody wanted it, but now I hear its the only saw they grab haha. I've been told they prefer the high RPMS, these saws are like the old screamin Detroit diesels pinn it and hang on!
I got 3 550s for 50 bux makes u think twice about paying 950$ piss me off they dont run worthna shit why guys give up on them 2 years old toss EM out
VERY very interesting! I have a 550XP and it runs great but it does have a small flat spot for the first 1000 revs from idol ! Other than that its a great saw! You pair are a hoot when you get together, cheers from Scotland
I have a 555 Autotune - so far so good!
the problem is that I have to run the saw in when it has a hick up. the good is that my t540xp is so bad to the bone when it runs right. thanks for all the info guys!
Good morning Walt, This is an amazing video. I had no idea that Husky was putting computers in their saws now. I think I will keep my Hutzl 272 I can work on it.
Thanks for the very informative video
yup....takes a dimension away form us who build saws....I think you will see more older "dead saw salvage" saws on the channel for those who prefer to roll their own.
Some of the Stihl chainsaws also have computerized carbs, and require the special software to tune.
As an old rule of thumb, if it's not broke you don't have to fix it?
we use to trap up here in northern ontario 250 beavers a year iv sebmerged 266xp under water quite a few times cuting around the beaver hut for years threw the ice and it always fired right back hope this saw can do that with a small chip in it good video
I thiught this would be interesting, I have a suggestion, I think you need to zoom in and out 2x as fast and 2x as much.
I’ve heard that the autotune saws have some kind of autotune breakin period before the software allows it to run 100%?
What is the "secret mysterious" adjustable Needle on the 550 xp carb's good for ? (28:49)
And why is it gone on the new carbs ?
Interesting to see these saws can respond to a scan tool even though it doesn't seem to have a functional battery. Or does it? I wonder how it measures temperature and throttle position without electrical power.
Ignition is a generator as well. System requires very small amounts of power. Not every type of memory is "active" needing power. Non-Volatile Memory will retains it's data still after power is off. Everything is real time so all it needs to do is retrieve and update & rewrite to provide the operating history. A really simplistic system
Great video, thank you so much, I understand alot more now.
Awesome .we have a 565 husqvarna starts touch the trigger stalls .nice vid peace from Scotland
Flash or field tune
Have a facebook page " Husqvarna autotunes only", post there
Hi guys .that was a great video about autotune saws .looking forward to seeing more vids .will check out face book cheers. Peace and love from Scotland stu
Thanks, for the information, great video. How many starts will it take until it reads an Average fuel setting, or Average temperature ?
I solved my own question, It doesn't figure the average by the number of starts. Also realized there are two types of Fuel Resets on the program. One is "Default Reset" and the other is "History Reset", so I sort of figured that out too.
Sorry...was in the Snow plow all evening... :( Please post some of your finding here! Good info for all. Maybe do a addendum video? Can add it to these comments? Might be surprised who watches a video on this topic!
Some of the 455 whiskies are auto tune. Not all of the but some of them in the 2015-2016 range of production.
Husqvarna 455's? The 455 and 460 aren't, just X-torqs. They released a 465 which is an Auto tune saw. Based on that chassis....but actually a bunch of differences.
th-cam.com/video/nHAsi5wG-8o/w-d-xo.html
Very informative video. :-)
Great video.....How often should we take our saws to our dealer for firmware updates?
Only if you have an issue with the saw. I think bob's underlying point was if it isn't broke....run it! The only other reason to is if there is an update that significantly helps things.....and when that happens chances are you will hear about it here or other places on line.
Here is a few Q's: Where does the carb get the power to change the fuel settings? Is there a battery and if so how does it charge up?
ignition coil
Nice video!
I have some questions:
1. The diagnostic tool is available just for dealers?
2. Is it possible to put the 562xp Firmware onto a 555 carb?
Thanks!
Yes effectively you have to be a dealer. They really control their world tightly. Can't mix and match firmware as it does identify the carb and limit the options. The down side to all of these systems is the manufacturers have taken the tuning away from not only the customers, but the dealers as well. Pretty much have to in order to meet new standards. BTW why the older style saws are eventually not going to be sold as the manufacturers have to meet regulations and can't w/o this micro level of control. The GOOD news is even with modified saws, these autotune carbs seem to be able to adjust and supply enough fuel for the work saw builds.
@@afleetcommand really sad thay dont offer the diagnostic tool to the public for people who like working on thar own tools, all about money and control
@@chrisyerp174 think ? what is it you think you are missing not having it and how would having CST make your saw run better?
@@afleetcommand I don't thank it would make it run better! But it would give ya the ability to change your own carb check for updates and look at the fuel trim and program a new carb for say a backup.Not that I thank it would fail prematurely ! But it's always good to be able to work on your own equipment , nothing is wrong with new tech as long as it's not locked behind a door
Is Bob willing to reset my 562 carb for me? No dealers around me have this tool and I just found this video. I could UPS it over. TY
He doesn't do anything by mail anymore, has to walk in the front door. Actually a field reset on the saw is all most need to do, it will accomplish the same thing. If it's a new unflashed carb, that's the only time a dealer needs to be involved. My local dealer is CNY Farm Supply, I'll see if they will do mail stuff. Most don't want the hassle
BTW where are u located?
@@afleetcommand Richmond, Vermont. I could send return postage as well.
Hi Is the Tool available to the Customer, Or Dealer only?
Hi, I'm from Romania, I have a chainsaw jonsered 2258, when the engine warms better, and faster, stops .What would be the problem?
if your dealer has the CST just have them do a quick analysis. If that doesn't turn up anything, do a vac/pressure test on that saw.
Also when on the CST down load the latest firm ware
I am greeting from Romania in 2258 when a chainsaw jonsered accelerate heats well and stops the engine that would be the problem?
I now own several auto tune saws and just cant get my head round the fact that the beauty of the two stroke engine is the simplicity of it. If you have been running saws all your life you know when your saw is not running good just by sound and feel alone exactly the same as tunning the high and low jets in the field, I know life moves forward but why the hell would you turn something simple in to complexity.....maybe im just getting old
Doing it real time like that keeps the EPA happy...and also by having that system take over the screw driver KEEPS the EPA happy. Actually .. I hear the same argument when ignitions went away from points..."Why the HELL would you put your self in a position if the bike quits, you can't fix it". The Autotune really isn't complex from a component perspective. I have yet to see one fail.
Thats good to here. Its an excuse on my behalf lol to keep on using my old 80s 90s fleet of jonsered and partner saws
Nothing wrong with that!
I have a 2016 model.. How do I know if I have an update... My dealer says there isn't one available... I bet there is one for my 562xp.. it sometimes start ruff on start up when warm. But other than that it runs great.
Ask your dealer for the cst print out and what version of the firmware it has. But if it runs good maybe just let it be.
I know this is an older video but I rewatched it because I'm in the process of rebuilding my first Autotune saw a 576xp Autotune, a question I had was about clearing codes and updating the carb firm ware but after rewatching i think my question was answered. I understand that the carbs on the 576 are fixed per say and are not updateable is this the case? My local dealer told me that I would have to take a running saw to him so he could hook it up to preform any updates and clear any codes.
There is no access to the 576 autotune module, its a prior generation.
@@afleetcommand Thanks for the confirmation Walt.
great video, I will not be buying a newer saw.
I understand that! Also why the surge in interest in "kits" of old designs. The AM folks are loving this as the desire to keep older saws in service helps their business. AND interestingly enough Husqvarna seems to have responded with literally cutting the price of the last generation saw cylinder kits in half. Saws like the 346, 372 original addition etc. It no londer makes sense to buy AM for those saws. Conversely some of the other brands are seeing entire kits as there is an interest in those older obsolete designs to the point there is a market for them in that form. Just an interesting time. I love my 562 and 555, but really prefer saws like that 365/372xpw blend and the 281's....:)
So if I have an old husky it won t update. That sucks
Any old 550, 545, 555, 562, 560, 2260, 2258 etc. with the Autotune with a plug can be updated. Even better ANY 555,562 can be updated with all the enhancements to this point and apparently the next set will retro as well Only the first gens like 576's and most of the Stihl with no plug are set as they came. Have to say those saws with the older layout and less of the heat issues really don't need to be upgraded.
Can the 592XP be tuned with this?
no
My 575xp and 385xp with this non adjustable high and low speed screws run lean in the cold weather. I let them heat up before I can run them. Is this right?
You just need to get the carb adjustment tool. Its not about saw temp, its air temps and density.
What are the actual differences between 545MII and the 550xpMII
not as much as you might thing. Some features like the assisted start and things in the cylinder that reduce rpm's & a little power relative to a 550. Most won't go wrong with a 545. A pro would prefer the 550 with the extra rpms and a little more power.
Is this Firmware update tool proprietary to dealerships?
yes
does the husqvarna 562xp 2016 model come programmed with the latest auto tune out the box
Maybe because there are continual updates.
please explain the fuel consumption on these husqvarna's 555 438g/kwh 550xp 446g/kwh 562xp 494g/kwh 372xp 426g/kwh 576xp 417g/kwh
it looks like the 372 & the 576 use less feul than the 555 & the 562
Just fuel and timing maps control system, is there any feed back from engine to ignition module ?
You need to watch the one I did later, too much to write in a text.
th-cam.com/video/zlQau8S3GEs/w-d-xo.html
get all the way through....I do work a little more detail in.
what happens if you go to buy a 550xp but the the dealer cant do the software updates, do you not buy the saw?
If they can't support it, find someone who can.
thank you.
what diagnostic tool and software do you use?? i need to check my husqvarna
A dealer tool, find a good dealer. Most will plug in and do the report real time for a lot less than the investment required even if you were a dealer for CST.
thank you
So is there newer style carbs that aren't autotune that you can put on newer saws, i like the fact of turning low and high screw just simply because im a small engine mechanic and still can't get a software tool which sucks
No, and actually once you have the autotunes, you really don't miss the hi/lo speed tuning :)
The new Husqvarna 550 mk2 and 572 are a mature offering and as reliable as the CDI's that replaced points. Bet you don't miss points either.
@@afleetcommand awe man that sucks, I found a site where I can buy the tool but wouldn't ever get husqvarnas updates is all but I could atleadt check things out and reset the carbs, and im not sure what i think about the points system im only 22 and learning so whenever I find a old saw that I just clean the points to get working again i almost like it to much haha
@@afleetcommandalso when you get a brand new carb what needs to be done to it if you cant just bolt it on and fire it up
@@quadvloggs6876 If it is used, match it with the right ignition it will work. If it is new, the dealer you buy it from needs to flash it. Most will. Only the "nickle and dime" types won't. AND unlike a conventional carb, which is fixed along with the ignition system, Husqvarna continually tweaks and updates firmware so without changing components you get those benefits assuming u have a dealer worth their weight. Not to mention the ability to print out a summary of the saws' actual run history. For me the benefits far our weight the fact I don't have a set of screws..:) So not buying the premise ....from lots of time with both.
Are the 562’s really picky about mixes like 50:1 or 40:1 and so on
No. But the internals of any "Strato" saw like 40:1 more than 50:1..:) Autotunes work around those little issues. Might look at my later video and it will be more clear how it all works.
th-cam.com/video/zlQau8S3GEs/w-d-xo.html
How long will it be before someone learns how to change factory perameters in the mapping? Also can this auto tune stuff mask problems with the saw?
you do have some control to set the "start" point for the hi & low speed...then it iterates doing its thing. And yes it will try and compensate for issues and will to the point the carb can deliver. You will see that in the CST as well.....if you see all the carb setting rich to rich 1/3 of the parameters likely the saw has an air leak....things like altitude, heat, fuel mixture it will adjust for. Actually pretty cool system. They aren't as interested in having access hacked....its about the EPA. So yes in can mask to a point. But a person who understands how to interpret the cst data will see that immediately
How is altitude sensed if it is ? Is combustion knock detected if so ? Thanks 😯
Works the same weather its dealing with altitude change or a dirty filter...watch the later video's where I begin to discuss how it works.
Okay, I understand why you need a computer for fuel injection, but why put a computer on a carburetor? Exactly what is it doing, and how does it do it?
th-cam.com/video/zlQau8S3GEs/w-d-xo.html
i am a dealer in vermont, jonsered and husqvarna, have you guys had to change the pop pressure on the new carbs. yet like i have had to do? just wandering, because there is only one other dealer in western ny that has had to do the same thing. its not a lot of carbs. but a certain few here and there. it saves the customer from having to buy a new carb. seems to work very well in the running and idle issues.
not yet. wasn't that one of mweba's deals on the 46's?. I've had great luck with the 48's so far. Maybe a little fat on some.
yes. i got to messing around with the needle and lever one day for curiosity. the customer had an issue with not idling after getting the saw up to temp. updated the software. was good for about 2 weeks. updated again. same problem. replaced carb. and updated. 2 months later he had the same issue.
i adjusted the lever down closer to the body of the carb. and amazingly it fixed the problem perfectly. he has had great luck with the saw ever since. it seems to have lots more acceleration from idle to WOT... idles like a dream and starts better when cold and at running temp. not that it matters but the saw is a jonsered cs2152. this was the first saw i did that had the issue. now i know what to look for on others. its a really simple trick that works well if the software update doesn't fix the issue.
Yup....bottom line is they STILL are carburetors! I'm dealing that type of fix on those AM MS660's as we speak, it won't fix the top end fuel issue because that's the main jet and simply the carbs ability to deliver fuel, but like adjusting needles on old Mikuni's it has an effect on low to mid range fuel mixtures! Good stuff.
I ported a 562 with a el46 carb and it was a good running saw before porting, but after porting it idles high and has a really bad bog off idle. If i put timing back to stock its runs nearly normal but still has a slight bog off idle. I called around to some dealers to see if they could reset the carb for me rather quickly. Some said they couldn't touch it for weeks, and another said they could squeeze it in. Watching your video I'm thinking I should just bring them the carb and talk them into resetting and updating it on the spot. It's very inconvenient right now to get to any capable dealer. Do you think theyll have an issue with me just bringing them a carb?
That's not going to help you :) Also I don't do anything through the mail. Would need the ignition/carb comb to bring to a dealer either on the saw or not to flash that carb. Would take them minutes even faster if you have the numbers off the ignition so all they have to do is plug it in to cst. But like I said that won't help your situation. Not going to go "lecture" but these saws require a bit of understanding....bigger isn't always better and the port timing is already right for a 14k saw.. Did a video a while back on the subject. But a popup and working the lower part of the transfer area is about the best way to tweak these along with a smart muffler mod. But instead of chasing the el46, go to a el48 and / or look for the air leak.. Might even check to see if the throttle cable is letting it get to closed.. ( cst will check that through the tpi ) Some folks has success tweaking the spring tension on the metering lever on the el46's to help the "bog" as well..even though its an autotune, it still has a carburetor!
afleetcommand I’ve read a ton of threads on the matter, a couple spike60 was involved in. And I ported it basically like you said. Cut the base, made a pop up, opened the lowers a bit, MM, little more timing. I know I’m not the only person who has done all of that and had success. What gets me is when I change the timing it changes how the saw runs entirely. Would like to start with resetting the carb first, then I’ll go through the normal procedures. If the 48 carb is needed I’ll go that route after the fact. It was normal running saw before porting.. Guess I’ll take the whole saw in.
@@yotaismygame OK
Made good gains after porting. Cuts great without more timing and even better with. It’s just the idling and bog issue that’s the problem.
@@yotaismygame CST will check throttle position so bringing it in does two things...latest firmware and checks for full throttle and closed throttle. But before going to an el48, vac test it. If you had the top end off and did any lowering of the cylinder for compression...have to make certain the flange isn't interfering with the case as well as the transfer caps. BUT the one I see often on the "hot rod" built by the pro's is the muffler bolts when tightened "jack" the cylinder up creating an air leak.
Can a guy muffler mod an auto tune saw? How much compensation does the system have?
Muffler mods are OK. Often a muffler mod doesn't require doing anything to carburetion anyway.
Or if it's not broke don't fix it?
Has there been any experiments to see if they respond to old school mods?
they do....:) auto tune only works with throttle position & rpm. so has no idea of actual mixture or exhaust.
Can you provide subtitles for Serbian language
I want to know where to sell husqvarna diagnostic tool. Please.
Dealer is the place to buy all things Husqvarna...what they do when they are done with a tool such as that is their business. ONLY the dealers can log onto the Husqvarna site and make use of the CST tool. It's a dealer only tool.
@@afleetcommand thank you! Is there a place to download software only? Please.
@@toolman5620 Only if you are a dealer
Where is this Dealer? I am local to you guys.
In the credits
More EPA BS. Wait till you work on these diesels with DEF. High dollar repairs. Another headache for the tech and dollars out of consumer's pocket! Not dependable........ Fedex master tech.
Chargers a waste of a plastic name LOL Nice vid with the un techie Bob . Ya right. Haha
Thanks for the video, informative. Trying to decide if having digital crap in my chainsaw is worth the risk/lower cost of a Husqvarna over a stihl. I had to stop watching and just listen half the time because all the camera movement was making me sea sick! ;)
The digital stuff is just as reliable as the typical cdi, the early "eco" saws had heat issues related to the mechanical design , in fact without the "digital" stuff they wouldn't have run as well as they did, the digital "autotune" is a net positive not a negative. The New Stihl's have digital stuff now as well, but are typically a little behind as Husqvarna was really the first to tackle that technology , The Husqvarna 550 MK II and Husqvarna 572 are much better than earlier versions, and have an excellent record so far. MUCH better than the first 550's and 562's along with the competitor saws of similar design. Have to in your mind separate the Autotune as a system from the basic saw design even though they are combined to make the saw. The issues seen in the older saws were not related to the Autotune igniton/carb system. Hope that helps.
Why would you ever give someone else the power to control your saw?
And how do you envision that? Like a remote control on your saw? A poltergeist?
@@afleetcommand no, i suspose my vision would be to supply me with the software to fix my own saw. Right to repair. This technology is good but you shouldn't have to go to a dealer for it.
I don't disagree, but for most they will never take that saw or need to take that saw for a CST flash of firm ware any more than most will pull the ignition off their older 372 for a better timing curve from the new ones. Same thing. My issue has nothing to do with that whole concept of self repair because in reality it's a non issue. My issue is yet again Husqvarna misses it with a killer product concept. CST packaged right would be the difference between the Husqvarna series of saw and the rest, giving a customer another toy to talk about and mess with, another widget that no other company has. Instead they suck it in and even make it tougher for their dealers to leverage. Rather than leverage it they hide it. But I came from the software industry in my early years and see a killer product concept that has been turned into a negative based on false premises and online BS. Could turn it into a open source style concept and just drag all tech types to the brand, a loss leader
@@allentyler2184 What do u see the software doing? How would u see the software relative to typical saw repair or rebuild?
Well I won't be buying one of those. The only reason I ever go to a dealer is to buy new chain for my Husky 61.Microprocessor controlled carburettors, you must be joking..
looks like al gore figured out another way to generate revenue
As I try to tell my eco warrior family memebers. my saw has 1 piston and 1 cylinder. dont lie to me and tell us that chainsaws pollute to much.
Is it ever about reason and logic with that crowd?
not in my experience. the problem is. at 18 years old I went to work. they, on the other hand, went to college and developed "clean" chainsaws!
Reality vs. theory :)
m-tronic is so much simpler i just dont have time in my shop to deal with all this nonsense
I haven't dealt with that yet...can you still adjust the Hi & Low like saws have been in the past?