The little slot on the jet is an alignment mark for install, that way you can line the needle up correctly

Ppl always say husqvarna vs sthil are like ford vs Chevy; however I like my echo the toyota of chainsaw

Just subscribed. Thanks for the well informative instructional video. I just purchased the cs-590. If I start the have problems, I will come back to this video.

I bought petroleum resistant JB weld to do this mod. After banging on the high jet a few times with my punch, I noticed the hole on the top reduced one diameter a decent amount. I was hesitant on applying the JB weld so I decided to just go with it. This helped a decent amount. After seeing your video, it makes me want to go back and complete the mod. Subscribed for sure!

Part number for the Walbro nozzle check valve with no governing hole is 86-578-1 its $8

Holy shit I’ve been having idle issues and issues with my cs590 dying after throttle for months and been tearing her apart. I just swapped out my high jet nozzle for the full send one (I didn’t seal up the hole like you did I punched out the entire jet) and holy crap it completely fixed all of my issues she is purring again , I would say this is the #1 most important carb mod for the 590 by far and may be the reason for most of its problems actually

Here is a perfect solution for mixing up. JB weld use the bottom of a beer can or soda can and then you throw it away when you're done easy clean up 🙌🙏

I think a welch plug would also work over that governing hole and it is easily removable. Great video, i really learned a lot from your channel!

Thanks for your videos ,I enjoy them.

Cs 590 is a torque monster 👹!!!! Nice job 👍

I just wanted to include that cleaning the spark arrestor on my weed eater helped improve the performance dramatically, so maybe look at the spark arrestor on the chainsaw to see if it had gotten clogged, if the performance seems to have gotten bad. Anyways, thanks again for the video.

New Echo Timberwolf owner here. Subscribed!!!!!!!

Glad you shared this, I have the same saw, it's running real nice right now, but after I do some of these cool mods I might need to do this

I mix epoxy on masking tape with a fat zip tie, works marvellously

Amazing Job!!!! Finally a cs-590 video that explains technical information and on what to do! Saw has been out for years and you Sir have the most informative video! Thank you Thank you!! Can I ask why you put the deflector angled towards the left side vs to the right side stock? I can’t believe it’s not hitting the limit on the coil, as least it doesn’t sound like it. So the 620 unlimited coil & larger carb isn’t as much of a issue as the stupid H-jet bypass on the 590/620 carburetor’s. That hole is what it sounds to me is the most restrictive lagging performance deal on both the 590/620’s. The muffler modifications of course have to be done as well as the limiter cap tabs. Appreciate your time Sir, best video on the KZfaq for the Echo CS-590 TimberWolf!! That saw screams now! Great job! 👍 So 😎!

On the 620 carb to get it to actually tune I punch the jet out rotate it a lil and reinstall then you can tune it to the moon. Those jets have to be lined up in order for that bypass passage to work. So simply turning it will block it off.

Subscribed a while back, and I have to say that I really enjoy the content, and now look forward to the next video, Good Stuff !

Lol seems like I’ve gotten behind on some videos 😂 awesome video😎👍

Thanks for the tips! Much appreciated!

I just bought the tool echo makes to remove those red caps it's a reverse thread tool best $15 I spent in a while.

Do you have a tachometer? There cheap around $25-30 bucks, would love to see what rpm’s the saw is revving to. I’m still waiting on tinman’s cs590 build to be uploaded and finished.

Love this guy.

Love the video!

Never know until you try, 👍🆙 Big Guy!

I would like to know how many turns out from seat position for high and low jet

Awesome awesome 👏🏻

I take the air filter cover off and just use the knob off the cover to hold the air filter while I’m tuning, yes those tiny carb H/L slots suck, that makes it where I can see better inserting the screw driver during tuning adjustments.

Looks like you’ve got a winner now. I noticed a momentary lack of RPM gain during all of those accelerations, what’s up with those? “Maybe” another tuning issue, or is it something else?

Sounds good

Nice job.

Broody, is this mod applicable to the 620 also?

Carb settings after jb weld and muffler mod please

Boedy, are you sure that "screen" in the nozzle isn't actually the check valve? Just asking..

But what did you actually adjust the carb to?

Awesome Buddy. You do such a good job of providing valuable, or at least useful information and tutorials on what, how and why you're doing things. Cutting cookies is fun to watch- but if you really want to become a better enthusiast or sawyer- you need to learn. And, you're funny, and relatable. I think you should be climbing the ranks if my opinion counts.

The line on the high jet is for proper alignment to the fuel circuit

good job

I also added paper gaskets and some shellac compound stuff between the carburetor on both sides to help steal things up because there were no gaskets originally and I feel like that’s a huge design flaw so that with the nozzle is a fucking crazy monster chains, I can actually read it and get it tonight for stroke anymore and you Lena to fuck out. The crazy thing is when I was trying to tune it I had the high I’d like one and a half it wanted a full like 3 1/half plus with us mod after I was done I was not expecting that. I was getting a ton of bars on the low and I could not Revit initially then I just opened that high jet and what bam .

you can limit restrict flow put a copper wirel in the hole and by thickness you can regulate the ammount of flow

That line is for line up the hole for needle valve

The slot in the main jet is a conversation piece…….😂

Question: Can I do the easier muffler mod without having to do the carb mod?

I would like to you put a tachometer on the saw to see where it reaches.

Seems strong and sounds sweet. Unlimited coil next?

What was your settings on the carb when you got it dialed in?

Seems a little quicker to rev now that it’s not smothered.

Definitely different carburetors. Look closely, maybe because he is in Canada and requirements are different for the manufacturer? But different.😊

Is this a cs590? My cs590 isn't black and red. The local dealer didn't bring timberwolf chain bar.

Now put a redbeard saws air filter and some west coast felling digs 3 point and it will be more of a beast

👍

Tinman used a 620 carb for the 590 I think

I have this same saw

To be clear, you were showing an "extra" jet, and - if 1 were to do this at-home, they would *not* actually be removing the jet from the carb? They would simply be opening the carb's cover on that side, and plugging with JB? Just wanna be clear!! Cannot believe it but actually had my 590 not start after mussing its carb the other day (it's ported and had been running-lean from a plugged filter, which I still cannot understand but it was running lean as heck and cleaning it made it go haywire and die when I pulled trigger..) May've flooded it, have the factory spec settings tuned in (3/4ths on the H, 1 3/4 on the L, just double-checked that is the OEM tech manual spec, has a good carb-tuning instructional actually am hoping the starting points are OK-enough for my ported&flowed unit..) "Truly modded"...man this is almost subjective in "common parlance" but I posit this is objective and that NO 590 muff-mod that opens up the rear half can be optimal, they all inherently allow atmosphere "into the mix" by the flange meaning you're altering charge-dynamics for the worse...you can fix it super easily though, using that big top-hole "for access" to the central baffle-wall, enlarge its passage-holes at least 75%+ to the front-half and then seal the top-face ENTIRELY, and make your new exit(s) on the front-face of the muffler (I made mine as a pair, though I could've made 1 exit w/ 2x the size, a pair of 1/2-as-big just has a better sound IMO!!) I did mine to about 75% surface area of the OEM exhaust flange area, though to be fair my flange is widened & port-matched into the muffler but I figured that'd only really affect the characteristics of the port itself not muffler-requirements, and all the books emphasize to go a bit smaller, than risk going a lil too-large, on your muff's final exit....makes sense when you consider how well off-the-shelf saws can perform w/ their choked-up muffs, my 2511 has like barely 1/4"sq exit not even!!

9:28 how do you replace that little thing

U can go down to the local hardware store and get a reverse thread machine screw. The limiter removal tool is also reverse thread. Was Tinmans carb from a 600/620?

👍🌳🇺🇸

She cuts EH.

The echo 620 series has an unlimited coil!

Mine turns 14to15k purty easy

Tinmans carb is totally different

I fly radio control aircraft, and a rich engine will not work as well as a properly tuned engine. Fact from 22 years of tweaking needles. If you do this modification, be advised that temperature changes and humidity changes will affect the performance. Modify at your own discretion 😊

Such a nice beam just to waste on a few cookies 🤦‍♂️

Goofy jobs….

People curse because they cannot express themselves with an intelligent choice of words. Any idiot can curse.