STIHL MS460 How to rebuild after Overheating on a chainsaw mill
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- Опубликовано: 8 июн 2018
- After mill one of my red oak log and starting on the second log I was running the saw a little harder and got it to hot. That's when it happen I was running it with a little extra oil but not sure how much it was a 50:1 mix plus some that I had just added into the tank. I go though the steps of how to rebuild the saw if this should happen to you. Here are some of the parts and tools That I used to complete this rebuild.
Check out the Chainsaw playlist for all of my chainsaw videos.
Rebuild Kit
www.amazon.com/gp/product/B07...
Torx
www.amazon.com/gp/product/B00...
Piston ring Compression kit
www.amazon.com/gp/product/B00... 
Развлечения
Looks like to me that carbon fouling smoke your cylinder and piston. The four ounces of MMO may have been what ate it up. I used to run MMO in my two cycle gas but it cause to much sponge (unburied oil) in my saws, so I have dropped it out of my gas recipe for two cycle. I still use it in my four cycle gas. I also run 40:1 Stihl Ultra instead of 50;1. I always put the flywheel side circlip in first, because itt is the one that always seems to come out if one come out. I also always throw any new cylinder and piston in my ultra sonic cleaner for about 15 minutes with a dose of Dawn dishwashing soap. Even new pistons and cylinders have some left over debris fro manufacture.
Thanks for the great tips! I have also stopped using MMO.
I guess it's kind of randomly asking but does anyone know of a good website to stream new tv shows online ?
@Arlo Nathan Lately I have been using FlixZone. Just google for it =)
@Gage Adrien Yup, I have been watching on FlixZone for years myself =)
@Gage Adrien Thanks, signed up and it seems like they got a lot of movies there :D I really appreciate it!
I like the ideas suggested here thank you. Great idea to open the exaust port on the new head.
Thanks not to hot rod just to keep the power the same. Thanks
You are really good at rebuilding this. Great work.
Thanks you so much for your comment.
Dropping in to grab more of your time! Watching and Supporting!
Thanks for catching up friend.
You keep this up and even I will be able to work on a chainsaw lol. Thanks for sharing
Well I hope so Thanks so much for your visit friend.
Grabbing more of your time, Watching and Supporting!
Great work as always!Very helpful upload!and nice editing video!
Thank you for your comment.
I am about to try to tackle the very same thing for the first time with my MS460. I have elected to go with an Italian kit from Meteor. They promise theirs meets or exceeds OEM so i predict wont have to spend time correcting issues due to poor quality Asian castings. So thanks for the video. It was really helpful and give me confidence to jump in.
I hope it works out better. Mine is already giving out, I checked the rpms and it is running about 14k I will be trying to find a factory rebuild kit next.
I need to rebuild my 460 and am looking at the Meteor kit. How is it working for you?
Good video!!! Well explained.
Thanks!
Never done that on an engine that small, cool info man.
Thank for exploring it Friend.
very informative, thank you
another awesome vid! big thumbs up!!
Thanks for your comment.
Thanks for the explanations 👌🌳
Dropping another LIKE on your video! I just fired up the "all" list as well! Watching and Supporting!
I thanks again for your support
Amusing job I like your channel and I did support you👍🏻👍🏻
Thank you.
Hey There!!! I don't know why, but RUclips hasn't notified me about your videos and I realized I hadn't seen one lately! Love these! Thumbs up!😊👍👍👍
Thank you so much for your visit friend.
oh wow wonderful job... thanks buddy
Thanks
really good informative video, gets my like !
Thank you very much for your comment.
Nice work
Thanks
neat work mate
Thanks
I always use older power equipment with adjustable carbs so I can run them a bit richer, I usually run 32:1 since I tend to run my machines very hard, not a single issue with any of them, they don’t seem to run too warm even on hot days.
Nice video!👏👍
Thanks so much for your comment.
Great video and work
Your video is interesting and brilliant I really enjoyed watching it
Thumbs up 👍👍👍
Happy Sunday friendly greetings solha
Thanks for your comment
That is cool. Ive always wanted a setup like that 👍
Thanks It is a good saw I just over worked it in the heat.
I was expecting a Freddy mask at the end. Great job my friend. Ansious to see how it works out with the different head. It dint look to different.
Thanks Its is running very good will have that coming out soon.
We have a 460 and its a beast!
If this happens again I will be putting the big bore kit in.
The exhaust port is small on these saws I have used 460's for falling big timber I open. The hole and the baffle up makes a huge difference in torque 👌
Awesome thanks for the tip.
Great video, only thing I would have done differently would be to use a little bit of 2 stroke oil on the piston and cylinder when putting it together.
Here to support your channel through Professional Student.
Good video bub
Thanks
Thanks
Use your two-stroke mix oil as assembly lube.
I love working on small engines
These thinks are great and easy to work on.
When I rebuild mine I use some 2 stroke oil and coat all the parts such as the needle bearing wrist pin and a little on the cylinder and that does it for me
That is great ideas
That sucks to burn up a saw, my 044 was burned like that and i put a new piston and jug in it. I wonder if it has more to do with the outside temp than the oil mixture. I do run all my saws around 40 to 1 but i also don't run my mill attachment unless it is close to freezing. I have cut a fair bit of lumber that way but always in the cold. Of course we have snow and ice until May here so that is not a problem. I won't dig out the mill attachment until November now. Sawmilling is 100% duty cycle and I am not sure if any saw can take that when you add in warm temps. Nice job on the saw and I will be interested to see if the new oil mix will help when you cutting.
If it's that cold i'm sitting by a fire lol. You have a good point It's not like a motor on a dirt bike or airplane that gets a lot of air cooling. Great point and It's way to hot to be messing around with a mill now in the mid 95s. The saw is running great with a lot of compression.
Thanks and God bless.
Same to you!
amazing video mate learnt a lot from it great job
**😊🙆♀️100% watch time 👀👍a like for you👍🙆♀️**
Thanks for your comment
Just let that keeper ring fly ol son
50 to 1 is perfect mix ratio sonny.extra oil isn't needed if saw is right....
Hopefully the new build will hang on longer for you.
Well I hope so, but I really don't think the quality of these parts are as good as the factory one, They last me about twelve years but we will see. Thanks
Hope the rebuild last for a long time.
Thank me to!
do you use anything to stop the threads from vibrating los
I had to buy new chain for the saw, I had it out to the furthest setting... I would just love to get to the point where I can sharpen SOMETHING rather tan replacing it! Watching and Supporting - Grabbing more of your time!
I suspect that the cause of your problem is the saw was running very lean due to having so much oil. Marvel Mystery oil, Stihl mix oil and Sta-Bil all at the same time is decreasing the gas to air ratio... Running it lean causes it to run hot.
I run a MS461 with a 36" bar and an Oregon rip chain on a Granberg Mill. I use Stihl synthetic mix oil at the recommended 50:1 ratio in 91 octane, non-ethanol, gas. I've milled ash logs up to 30" and cherry logs up to 20" with no issues...
Chainsaws should be run at full throttle to insure good cooling and lubrication. Also, do you have your saw's bar oiler adjusted to max output? I haven't found the need for an auxiliary oiler with my setup which is similar to yours. Also, I don't recall you mentioning that you are running a rip chain. The type of chain really does make a difference in the cutting effort as well as bar and chain wear.
Yes I was running a Granberg ripping chain it dose a good, thanks for your comment.
I wonder what happens with the electric chainsaw I have if I overwork it... that I can tell, so far, it will shut off, and I have to reset the battery, I also need to monitor the chain oil... Watching and Supporting - Grabbing more of your time!
Not sure if it is brushless but if it is a brushed motor the brushes can were out normally they can be changed out.
Support
Thanks for your support.
I watched your last video you are really have some issues I would just block that person so you don't have to see or hear from him again. Have a great day.
MTRUNK 85 yes he’s been blocked on everything 🤗
Great job! It’s been a while since I worked on 2 stroke engines, but I remember a little bit about Bultaco and Husqvarna engines. In looking at the video, it looked like you had an exhaust leak on the old jug between the lower part of the exhaust port and the gasket. Could a leak there also suck a little air in on the intake stroke, causing a lean condition, i.e. overheating? Were you worried about any piston parts and scoring swarf that might be in the crank case and in the big-end rod bearings and the crank bearings? That Stihl saw is a monster. Glad to see this job can be done at home without a trip to the repair shop. Keep the videos coming.
Thanks friend your your comment. I guess the proper way would be to completely tear down the whole engine, but in this case I really didn't think it need to be done. Did my rancher a few years back and its still running strong. Thanks
MTRUNK 85 Thanks for the reply. As always, experience trumps theory, and it is good to know that a total tear-down is often not necessary or desirable. As a shade tree mechanic, I wasn’t thinking about a total tear-down; my thought was to wash any crud out of the crankcase with kerosene, or something similar with some lubricating properties, and strain it when you pour it out or pour it on a paper towel to see what comes out with the rinse.
It would be a good Idea to get is as clean as possible!
Curious if your mix experiment worked out. Saw run better, cooler, any scoring?
I wouldn't say it runs better but that what we used to do on the dirt bikes at least until they get broken in. As of right now everything's running good.
Can u tell me the ms462 piston ring diameter is it 52mm???
140 psi good compresion 372 xp ?
I would just mix oil with the gas. Take the stabilizer and marvel mystery oil out of the mix. 40:1 is a good ratio for milling.
I am surprised about the differences, was that a genuine Stihl rebuild kit or some Chinese replica ?
You guessed it a Chinese replica!
That's a pretty small saw for ripping lumber. We would usually use it for a landing saw.
Yeah I agree but this is what I had an wanted to see if it was a decent option for making a few boards here and there found that it can be done but not really a good option in my view. Thanks for your comment and visit.
what is that at the end of the video
What brand aftermarket parts are u using
Something from Amazon the link is in the description.
How to avoid piston scoring. What is the contribution of carburator to piston scoring, piston damage, please replay me sir.
Running the saw to hard or to lean causing overheating.
LUBRICATION MORON...
I used stihl for years, not too many problems with the mix, since using amsoil, there’s a big time difference , more protection with amsoil for sure, also running lean will get you jacked up right away, also way cleaner with amsoil
How do you get the cylinder cover off arggg!
Are you talking about the plastic cover or the jug?
@@mtrunk8570 plastic. Got it.
BET YOU 50 TO 1 you had an air leak on a seal that caused it to melt down..better make sure you pressure and vaccumn test it after rebuild.and use a tach to set engine top rpms as well as idle..cant go wrong with the right tools bud.guessing dosent cut it.neither does chineese junker parts..OEM ONLY.
RETIRED Stihl Gold Master Mechanic here...
I agree with that I found an air leak on my husky which I just rebuilt cause of all my issues. Thanks for the tips will be reaching the pressure and vacuum test procedures.
@usaisalwaysnumber1
I am gunna rebuild my 562xp. What site would you order the jug and piston from?
usaisalwaysnumber1. Hey there. This same melt down happened to my modified MS440. It has an aftermarket 460 jug on it.
I’m going back to factory parts but how do you test for an air leak?
This rebuild kit looks like really inferior quality. If the inlet and outlet ports are off like that, the rest might not be that much better. When you were milling that log, it did not look hard at all...its a 6 HP saw, rather small log. For milling a 90ccm saw would be better, but that aside, just sticking a Chinese copy cylinder on it is definitely not the way to do it. First pressure test the crankcase, to see if it is drawing in air. If you would not have stayed on the throttle so long after the chips stopped flowing, you might as well have saved the cylinder and gotten away with a new piston and rings from stihl original. Hope you at least tuned it in with proper speedometer. Good luck with your milling!
Agree this is not the best fix but I already had it so really did have anything to lose! The saw seemed to be running lean I should have adjusted it before it got that hot. I believe the log were about 18" in diameter not really that big this was more of a test as I have some 36" trees that I wanted to mill going to wait for cooler weather! I will say that the cylinder is still running good probably about 4 hours on the saw. Thanks for your comment.
36" with a 460? Well, depends on the type of wood I guess. Do you have the chance to get the GB Arbortech bar with the 1,3mm narrow 3/8 LP chain? I run that in 42" on my Dolmar PS9010, I can max out to 100cm pure cutting width, but then it goes really slow. Narrow chain is the way to go....and although a bit more on the rich side as you mentioned.
I agree with 36 inches being to much for the saw but Stihl says that is the maximum bar size. I do have the GB ripping chain it works well I believe it is the narrow one I do not have the GB bar just the Stihl bar. Just pulled the saws out today time to get them going again. I will have the comment in mind and thanks again!
Why do you, the Americans, modify your chainsaws, result they are more reliable.If you want to make the longitudinal cut, you take a bigger machine.And you modify the muffler for heat.
Thanks for your comment I had no intention of modifying my saw, the milling project was a test to see if the machine could do the job, as I had a larger log I was wanting to mill. I was not planning on getting into the milling business just wanted to have the option. I clearly stated that in one of my other videos this is not the way to go if you plan on milling a lot. As for modifying the knockoff jug I had was way off that is the only reason I did any porting on it I did explain that in the video.
keeper?? that's called a circlip bud..if you don't know the parts,how are you going to build the saw? LOL
Thanks for the correction I need all the help I can get lol.