Cherry 038 Mag - My Carburetor Adjustment Method
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- เผยแพร่เมื่อ 13 มี.ค. 2018
- 3/14/18.
It seems that there are many methods of carb adjustment styles out there. Some even with the cylinder cover off and air filter not correctly secured.
The saw needs to be fully assembled - as if you were going to actually be using it - to properly set the low and high speed circuits.
I do not have a 32" bar hanging on this 038 as it would be used to fell timber with because we are at the shop. The idea/method is exactly the same though.
I have been adjusting the carburetors on my work saws this way since in the early 80's this way. They run a little on the rich side utilizing this style. I have never lost a cylinder assembly due to seizure until the purposeful melt down on my 346 doing some R&D work a couple of weeks ago.
I am currently available for port work. If you are interested in some custom saw modifications, please shoot me an email.
danger_cat@rocketmail.com
Thanks for watching. - บันเทิง
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Your channel is like chain saw college. Thanks for sharing so much knowledge.
Amen :)
Professor Jack. From old school.
I run a woodsported 038 Magnum with a 30 inch SugiHara bar and a Oregon full skip chain, here in Germany. It cuts like hell. There are not so many ported saws in Germany, I only know one guy here who's doing that like u do in Amerika. Great skills, great jobs and very helpfull.
Dude i am impressed finally someone who knows what what they're talking about and you can understand.
Very nicely explained. Amazing how something like this can get so over-complicated. That is one nice looking 038 and even blubbering rich it still sounded pretty mean!
Thanks! I followed your procedure and now have a strong running 038.
Good stuff Jack, I like how you explain yourself.
Love that saw! Use to call them farm boy saws. I ran one for yrs great saws.
I have an 038 magnum and I absolutely love it. Mine doesn’t have the av though. It is pretty cool to see a video about one from you! I am extremely impressed with your knowledge and skills when it comes to chainsaws! Other than a small amount of firewood and cleaning fence lines I don’t have a ton of use for a chainsaw but watching you makes me really wish I did! Thanks for the extremely informative videos, I always look forward to the next one!
Kako je podesen tvoj karburator, sarafi L i H, koliko krugova su odvijeni ? Hvala
That 038 mag is a monster. I have an 038 mag 2 that is in beautiful shape. 72cc is more than I normally need but I make sure to take it out once and a while to keep it freed up and because I just love it
First grade stuff for you, Jack, but thanks for sharing Your Way with the rest of us! (only recently started using a tach...good results!)
Some great information Jack! Thank you.
Nice vid Jack educational and useful.
That is an awsome saw and great info!
Thanks for the information, I have this exact saw and need to get it to idle correct. Thanks for the video.
Nice saw and thanks for sharing.
Thank you man,love your way...
THANKS FOR YOUR EXPERT ADVICE ON THE 038 I'VE HAD SINCE 1982. - YES, THEY DON'T MAKE THEM AS WELL AS THEY USED TO - THAT GOES FOR PRACTICALLY MOST EVERYTHING TODAY.
I totally agree. It’s your saws 40th BD this year. Keep looking after the ‘ol girl.
I have dads 1991 038 AV. It’s largely sat most of its life, fortunately stored very dry and in its original case. I just cleaned it up and looks and runs like brand new. 😅. Maybe 20 hours on her. SO, you think these 038 saws of ours are better made then new ones these days? I’m curious what the differences are?
I had a 038 AV Magnum II Made in Brazil saw. Very nice saw
KimballCody I’ve still got mine.......
I wanna get my hands on one of those 1 day
hastayım bunun motor sesine, çok güzel bir sesi var
Just got a running 038 Mag 2 yesterday for free gotta get it going to see if I like it so far my old 288 low top is my favorite for casual wood bucking for winter
Nice saw .... iirc the 038 magnum is 72.2 cc ; 4.4 c.i. and around 5 hp stock - should throw some roost ! Like to see her in the timber when she’s all dialed-in !
Awesome video nice job
Maybe you could make a video of your thought processes when tuning different types of saws? I love how you talk us and the trees through you're cutting processes. Keep up the great work and stay safe. Blessings to all.
d hamby belated. It's the same for any saw I can adjust.
Thanks for watching.
Thanks definitely got mine running alot better watching ur video my 038 and 048 both are not stock but I'm not sure what's done to them they run alot better now that they are set right Thanks again
Jeez Louise, that engine sounds good 😎.
Very informative! Thank you
get to it we dont care about handle. When you got to it you are the best
Thank You!
It has been a long time i want a chainsaw like this but i can't afford. Nice video,very well explained
Thank you, and for watching.
GR8 info thank you Manitoba Canada
Hi thanks for your help before.I'm after more advice.I notice when I take air filter of the 038magnum there are alot of fines sawdust around the carberetor throat and a touch inside.Im not sure if the touch inside is because it falls of the air filter when I take it of for it just sits at the entrance and I cant see any done the throat.But nevertheless there is a heap of dust around the entrance.I notice on some ipl there is a plate that goes on the carb then on others there isnt.Mine didnt have it and out of the 4 038magnums i have they dont either.Is this a fault as in common for the 038mag to get so much sawdust around the back of the carburetor? the air filter looks to me that it does indeed match up mate up to the flatt surface of the carb so im not sure whats going on.
JACK I adjust my the same way that's how they taught that in school you must be in you late fifties we are not old just a lot of OTJT.Where is the best place to get the west coast bumper spikes and wrap around handle bars
Tim hi. I would do a web search. You might check eBay as well. The factory fitted wrap handle bars are like hens teeth. The 044/046 will bolt on as well.
Thanks for watching.
Where Can I Get The Full wrap handle like that??somebody can help me or give me advice.Thanks!☺️
Hey man, I’m a climber/cutter an my plan for when I get hurt or old is to be a saw Mechanic. I’ve been setting my low jet by ear listing for “sweet “spot while the saw idles an I turn the low jet pin. I guess what I’m trying to ask is their a better method for setting the low jet ? Or something more precise? My saws run well an part of that is thanks to your content. I want them to run perfect
Tyler hi.
Belated -
This video explains with the engine sound what has worked for me in multiple decades.
There should not be a bunch of the standard 2-cycle da ding ding going on as the saw comes off high idle.
Conversely, it should not stammer off idle when getting up to speed.
There is no way for me to run or hear your equipment to offer a suggestion.
I thought that was is shown here encompasses a good base line for the viewers.
Thanks for watching.
Hi Iv been watching your video's for a few years now thanks for putting them up great work and information. I am trying to diagnose a few 038magnums wondering if you could help? When testing fuel tank,fuel vent.on a stihl 038 magnum should the vaccum test on the fuel tank slowly come down? also what about when you put pressure in the tank should it hold or slowly go down? I have 3 038magnums and each one is reading differently. One saw wont hold pressure or vacuum cannot pump it up at all. The other saw holds pressure constant and leaks down with vacuum slowly.Then the other saw on pressure is slowly goes from 7.5psi down and the same with vaccum.Would love to to a video of testing old 2grub screw tank vents.Or if no time for a video advice from yourself with som much skill and knowlege would be fantastic.Thanks.
rabbitatethefox hi.
Yes, on the slowly down.
Your going to get different readings if the vents are not all the same age and run time. Might just get slightly different reads anyway.
I put a brand new one in that was bad one time.
You want leakdown under vacuum to happen. Otherwise the saw/s will act as if there is an air leak after a bit of operation.
They should not really bleed out under low pressure. The down and dirty method is to completely fill the tank and set the saw out in the sun. It shouldn't leak fuel, from anywhere. If you watch it and it does leak fuel, usually that helps to find the source.
There is either a hole somewhere or the vent has malfunctioned if the one won't hold some vacuum and no pressure. Assuming that the needle in the carb is doing it's job here..
It's going to leakdown super quick if there is a perforation in the line, the vent is clapped out or the tank has a small hole.
Good luck deciphering.
Thanks for watching.
@@hotsaws101 Thank you very much for replying. Makes more sense now. God Bless.
I have been working on my 038 Mag ii and it seems the Bing carb isn't adjusting properly. At WOT, she ramps way up after a few seconds, while not in the wood; so I release throttle. This happens throughout the range of the HI needle adjustment... I've not experienced this on any other saws before.
I settled on about 1 3/8 turn open on both needles, but she bogs down/power loss about mid-cut on a16" log.
Previous owner ran ethanol fuel, fwiw, and I ran Seafoam through cylinder and carb to clean things up.
Ideas?
cameronb76 hi.
Belated -
Surely you have figured it out by now.
If not, it sounds like your carb has an issue or two.
It is really hard to "tell over the phone" exactly how your saw behaves.
I would be installing a new carb kit and making sure it was well sealed upon installation.
It that doesn't work, better get a pressure & vacuum check.
Best of luck.
Thanks for watching.
Does that rough high rpm figure go for Husky's too? I thought in the book for my 372 it says 13,500, but that could definitely be a brain fart
Marc hi. It depends on the tune and the model to a degree. The book is for a stocker. The zipped 372s run 15 - 16 no load (assuming unlimited coil) with bar & chain ready to cut.
Thanks for watching.
Thanks for clarifying, and thank you for all the content!
How can I get in contact with you?
where did you get that full wrap handle? And will a 044 handle fit the o38 magnum?
Mike hi.
I searched for about a year to find a really nice set like this. A lot of the west coast 038s that were used for felling came with the full wraps. It is just finding a set that is not beat. The 044 version should bolt on but the weight distribution is not the same between the two powerheads.
Blessings on this day.
hotsaws101 thank you for the answer have a good day
I would be curious what the RPM is before and after bar and chain installation
H Phillips hi. I had the high speed WAY fat so it was not able to run away with itself.
Probably not going to much more.
Thanks for watching.
Mr jack. My ol man has this same exact saw he's almost 70 n has a hard time getting it started and wanted a decomp valve put in it and I was wondering where would you put one if you had a customer request one on that specific saw?
So I'm on information overload. This modified saw without a small bar and chain gets leaned out more after you put the small bar and chain on? This you do to raise the rpms to around 15k? So does this mean it runs richer with a small bar and chain than with a 32"? Or does it not get leaned out more to run at 15k when you put the larger bar and chain on?
d hamby hi. The chain has a parasitic drag component that pulls the engine down as compared to without a bar & chain. If you are looking to have a saw run at "x" rpm with a the b & c then it will actually run at a higher rpm without the drag of the chain.
The "richer or leaner" concept is a direct result of the operator input and carburetor tuning. You tune the saw for the atmospheric conditions and with the bar & chain installed, ready to work. If the saw was set up initially to pull a 42 and you then switched to a 32 then it most likely will need a high speed needle adjustment. This is a direct result of the parasitic drag (or lack thereof with less drivers) associated with the chain.
The saw will run at a higher rpm with a short bar if it was tuned originally with a long bar. It may or may not be to lean at that point. When going from a short to long bar, the opposite is true.
I probably did not get it out in the most concise way in the video, sorry.
Hope this additional info helps.
hotsaws101, you did a great job of explaining it the first time it's my inability to understand and communicate that still has me lacking the information I am looking for.
Please advise where to purchase a wrap handle. I just purchased a nice 038M similar to yours.
Thanks!
Those have been nla at the dealer level for decades.
Best best is find a used set on eBay.
Best if luck.
Thanks for watching.
If my saw ramps up to runnin' great just before it runs out of gas should I be lookin' to adjust it more towards the higher end of things?
Madreamer hi. Its going to a lean condition because it's running out of fuel. It's best to shut her down asap when you notice it happening. Probably not best to push the envelope and run it out of gas to often. I try not to but it doesn't always work.....
Thanks for watching.
Yeah I shut er down as soon as I detect it, just was thinking man I wish it would be as alive as it is runnin' out of gas...
@@madreamer hi. Zip it. Then it will. Thanks for watching.
Hi Jack, New subscriber here. Great lesson thanks. I've got a Farm Boss 271 20 inch bar , .325 chain. It runs better now thanks to you! I cut about 6 cords a year Doug Fir and Alder. Any tips for the saw?✌🏻️
Alan hi. New plug after a weeks worth ( ~ 40 hours) of use, sharp teeth with the stops at the right elevation, needles on the adjustable versions set correctly for the chains and atmospheric conditions, clean air filter, and a really good mix oil.
Blessing for this day.
Are those original sized felling dogs for that saw?
Liz hi. The West Coast version, yes. Thanks for watching.
I'm wondering if I should try and tune the saw to a certain rpm or to the point where it starts to fall off rpm, when adjusting the high limit screw back out after finding lean point of Max rpm?
d hamby hi. Having a slight burble or miss at high idle, with the bar & chain installed and ready to cut, is how I tune a working saw. I don't look for the max rpms through the to lean point.
Two different states of tune will have the same saw running at different rpms at high idle. It's about having a slight miss, then the saw will run well and hold up - if the operator takes care of their part.
Thanks.
hotsaws101, That's a good point not to hit the lean point, a lot of damage can happen very quickly. You just sneak up on a rpm that you know works well for that saw? Slight burble with the chain out of the wood and no burble when cutting? Plus keeping an eye on plug and screen colors. Kind of the way I've been doing it. Need a new tach though, mine seems too inconsistent.
d hamby - Usually they will have a slight miss in the cut as well when you back off on the feed a little. Back in the day, with my 084s, 394s, 288s, 045s, etc,. etc. you could relieve some of the pressure on the feed and they "wood" burble a fuzz with the throttle wide open. Never roached a topend (some mechanical DNFs ) when tuned that way.
Would love to find a wrap handle like that for my 038 I’ve looked all over with no luck
Farmertec has them.
Floyd Beard I’ve looked on the website several times they only offer the half wrap for that model, the 044/440 won’t fit either I have one done tried it, thanks for trying to help a feller tho sir
@@OldtractorfanI thought it would have fit to 038. Only reason I mentioned it a member in are Stihl group has the MS380 and the MS381 with the farmertec full handle that fit the 440 and 660. I made a post in the Stihl group asking if anyone has use the farmer tec handle because I wanna do the same to my MS381. Hopefully you find what you're looking. You're welcome.
@@floydbeard5073 may I know..can 440 wrap handle fit my 381??
@@emiruzair5243 the wrap handle will fit
What tachometer are you using?
William McDonough, I believe it is a PET-2100DXR OPPAMA.
hello, are the spurs the original spurs or the spurs of another model?
Sahin hi.
The West Coast version bucking spike that came on the wrap handle saws is what you see here.
Thanks for watching.
I have a 038 mag with a 25-in bar on it and I can't seem to get it to hit the right sound.
Especially when it's in wood It's constantly four-stroking I'm hear In Pennsylvania
I love this. Is this for sale I am very very interested. Thank you for your time sir.
Karan hi. It is not. Thanks for watching.
From the information I've gathered it seems to be the amount of fuel being burned that needs to be addressed and not so much the rpms? Is this true in your experience or is there different cases for each saw? What are your thoughts on the decision making process?
d hamby hi. I am curious to see where that information is coming from?
The second question was looked at in your other post from the same day further down in this thread.
If the saw is tuned right for the atmospheric conditions & chain, the chain is sharp, the stops are set correctly, the plug doesn't have a worn electrode, and the air filter is clean then the saw (cutting) will be about as efficient as one could expect.
I tune a work saw to have a slight burgle (miss) at high idle.
Hope this helps.
I ran a 038 mag 2 for a few years of fire Duty, hard to get one for myself, ported it and used it for cutting firewood for 3 years. A bigger bore and new pistons it became a beast for a bigger bar. 28 and 32 were my gotoos
What would you set an MS461 w and unlimited ignition coil to ?
Brett hi. Are you talking about a stock saw? It would depend on a few factors. Need some more information.
Thanks for watching.
hotsaws101 been decked and combustion chamber cut, transfers opened, intake and exhausted only polished to 2000 grit, muffler ported
Brett hi. If someone was in there already, proper etiquette would be to ask them for that info. Not my place. Thanks for watching.
Where do you get the handheld tachometer from?
Dirk hi. It's a Pulse. Had I for awhile. You might consider a web search. Both Stihl and Husqvarna have a good one available through the shop. Thanks for watching.
Thanks for your reply. I assume that it is an inductance tach.
Dirk Bremer try Madsens
PET-2100DXR OPPAMA found mine on eBay.
I would love to send you my 038 Super!!
like that saw. sell it to Norway? :)
Helge røysland hi. Sorry I missed your inquiry until just now. This saw was spoken for before the video aired if memory serves. Thanks for watching.
What brand of tach was you using
Joseph hi. Pulse. Thanks for watching.
hotsaws101 thanks
PET-2100DXR OPPAMA
What kind is tach are you using?
www.baileysonline.com/husqvarna-502-71-14-01-oem-pulse-engine-tachometer-502711401-hva-502-71-14-01.html
Pretty sure it is a PET-2100DXR OPPAMA.
I have a 038, I sure wish I could get him to tune it up and found out I’ve got a bad piston. They don’t make em like that anymore. Just looked on Amazon for some teeth.
Hyway makes a good top end kit easy to install
Is the spark plug supposed to look a littie wet
hay man...Why is Turkish not available in translation languages?
I'm uncertain.
That would be a question for the yt programing department.
Thanks for watching.
Doesn't look like a 038 magnum .The ones I ran said Magnum on them!
Appalachian Stihlhunter ll, We,,, I build "sleepers" purposefully. Especially if a customer wants an unassuming animal of a saw to beat up on the mouthy "brother-in-law", father-in-law, etc. etc. With that, this saw is seen handling a 461 with ease in another video on this channel. Guess you missed that one....
Thanks for watching.
I saw that video after this one. I am new to your channel. I like the stealth concept,it's something like I would do!I picked up on this video because I have a 038Super that neds a cylinder kit and I can't find one.
minh muon mua mot cai
I liked Insane-o a lot better.
I would recommend against revving a saw WOT without bar and chain.
SNELLERIZED GARAGE - Again, who is the "I" exactly? I mean really, let's just get it out in the open.
Also again, this a demonstration on carb tuning. It doesn't hurt a saw to have a few wide open throttle blasts without a bar and chain as long as the carb is fat on the high - which it was here. This was already addressed in the other post you made - which it sure would have been tidy to continue the saga there..... Since it seems like there will be an interchange or two in this process.
@@hotsaws101 wee bit sensitive aren't we?
SNELLERIZED GARAGE - Nope. But you definitely have a thing or two to hide. Unfortunate.
Why are you running this saw WOT without a B&C? BTW, I'd like to see a 038 running 15,500 with a 32" bar.
SNELLERIZED GARAGE - Because there is no need and my bench doesn't have a curf taken out of it... This was for demonstration on carb tuning. This method will work with any length of bar or sans a bar - and the high speed needle will be in a little different position for all of them. I also stated that it is done, "barred up", when a guy is out in the wild blue yonder getting ready to saw on something.
I had mentioned (although not as concise as it should have been) ~ 7:00 in the video that the end result would be a little higher if a guy tunes it with out a bar & chain and then bars the saw up.
In all actuality, without a bar and chain to get the same rpms on a saw the high speed needle will be out further (more fat) than with a bar & chain mounted because there is parasitic drag from the chain in the bar groove, drivers contacting the sprocket in the nose, weight of the chain itself, the bearings that the sprocket rotate on, etc. that has to be compensated for. This requires that the high speed needle has be adjusted in further (more lean) to get the engine to spin the same rpm number as the saw will without a bar & chain.
That will be addressed in a later video.
Garage. Do you have some kind of a shop of something?
Thanks for watching.
Please train me sir.