Torque, torque, torque. Better than speed. I like mine just as it is.

The coil isn't limiting you in the cut. It is not necessary to spend money in this area. It is not necessary to change the carb either. The problem is in the semi-fixed jetting. Replace the nozzle assembly with part # 86-578-1. $4 part will allow you to actually lean this saw out. Gut the muffler. Delete the gasket and you'll end up with around .024-25 squish. Widen the exhaust port, raise slightly, and polish it up. You'll have a much stronger running saw than is shown here for $4.00 and a couple hours time.

Just made the carb, coil and muffler mods you show: Now I have awesome performance in my old 590! with a 24" bar with power to spare!! Thanks so much! Great video and instructional advice!!

Tin man gotta get that muffler mod before we port it I'll bet it makes a huge difference

Great video. Tech talk. Great overview of the echo. Love what your doing 💪🏻🪓🎯

Awesome Vids!! as always thanks for this.. keep up the great work!!

Love this especially since I have a 590 !!! Great job Tinman and thx for all the instruction ..really appreciate it :)

Thanks Tinman I like your comparison videos. 👍

Exceptional video, very informative, thank you!

Well ! Waiting for the next mod .. Thx for doing this saw, can’t wait

I look forward to the stuff on a Friday night thank you Tinman!!

Great content very informative cheers Tinman 👍🏻

Top video. I'm keen to see how this goes.

Well done Tinman, very interested in this build.

awesome, been playing around with my cs590 here in Australia on our hardwood. I love it!

Nice!!! I've been looking at getting an echo. Thanks tinman

Great video! Thanks for the info !

Great video and explanation!

That's awesome Tinman lots of those echos running around here in my area . Enjoyed the watch the tach on the go 😎🤘

You mad scientist! That is the best Video yet. We knew the port job would be done by you at start of show. If I didn’t have a Mac 10-10 and a XL 12 to get ported I would grab a Echo and follow along. Here’s a super thanks to you!

I've got a 620 and its awesome. Pulls a 24 inch bar like a beast.

"Those red things fell out, weird". Lol love the channel Tinman.

Have the same saw, will be following. Thanks!

Great vid, thanks for taking the time to put it together. I was thinking about getting a new 620 and having it hot rodded. Maybe I’ll save the cash buying a 590 and do some if it myself. Thanks again!

That's a great simple mod!

Awesome stuff, thanks tinman

Can't wait to see when you get it ported brother.

Good comparison buddy! Gonna be a nice build!👍👍👍👍🇺🇸🇺🇸🇺🇸🇺🇸🙏🙏🙏🙏

You are right on about how easy it is to work on Echo Saws.

New to the channel and love it. I recently purchased a 590 and after breaking it in felling some small trees and helping a friend out with some good sized firewood (he for some reason thought a small cheap ass electric Kobalt from Lowes was enough) I'm very happy with the saw. Seriously considering a new carb/coil and maybe a muffler mod just because. Keep pumping out the great videos.

Great comparison video Tinman!!! You’ll be very impressed with the Echo internals…very clean porting and finish!! You’ll be able to do a gasket delete and then some.. lotta head space. Your gunna have fun with this one!!!

Awesome awesome videos that you do and yes this is worth it, thanks.

Loved the video👌

This kind of content is awesome

awesome. hot rodding at it's finest. i've always admired the slide rule types, but i feel that intuition is of equal importance. I'd love to see whats inside that muffler and hope you do another test, muffler modded before port work. thanks for taking your time, i always look forward to your vids.

This will definitely make a interesting build. Was curious as to what the bore and stroke is so I looked the specs up. The bore I figured was on the small side at 45mm the stroke on the other hand is a bit longer then I expected it to be at 37.2mm this thing should sing in the wood after raising the exhaust roof, intake port, and transfers. If a guy can even get his port tool in at it lol. Definitely looking forward to the porting videos on this saw.

Great day too buddy glad to see ya and tickeled to see ur video

Great job Thanks.

This is Great! My 590 is two years old, but I've only recently been using it heavily. Suddenly, it's seems to be running better, and starting easier. I guess it finally broke in. For $300 dollars I paid for a new saw on Ebay. I couldn't be happier. It has good vibration cushioning, and I'm literally ripping beams out of white pine to use as a bridge, and cutting sugar maple for firewood. And I used to use sthil 440 for work. So easy to work on, but I haven't had to do anything to it.

Looking to get one early next year. I believe that, and my 351 will have a lot covered.

Great advice on this saw I got a deal on it but normally a husky guy and noticed this echo had no rpm compared to husky so I will definitely do these upgrades thanks 🙏

Great vid

Nice vid brother, thanks for the level no hype approach. Got to love that EZ tach? I think it is the best diagnostics tool I have ever owned.

LOL, @09:31 “The Hand Dino...”. I Love it! Awesome! This Man is extraordinary in his abilities and knowledge, and his communicativeness, juss sayin’. 👍✌😊

If you increase air intake you should always free up the exhaust More air in more air out.

Very nice!

yer a damn good technician and teacher!!! THanks!!

I have had a few of these saws and will say they are so easy to work on. Also they have a bypass jet that will not let you lean them. You can order another non bypass jet and push it out , then push in another jet then lean it out. I used to have the part number for the carb part but you might find it out there.

Great vid Tinman. Great results with the changes.

Good video they port nice

Great Video great dimo

I ve had a ported 590. That thing was a beast. Don't know what my buddy exactly did, but the compression was very very high. But I would never buy a 590 again because if the saw get stuck and you pull a little to hard (yeah yea, I know you should not do this but it reality, you try to give it a gentle pull), the rubber airintake thing gets a rip. This is why the 620 have a limiter strap their. So if you do it - do it with it 620SX. Or just cut firewood from a staple where the saw cant get stuck. I'm sure I have a video from my ported 590 with a 620SX coil and the 620 carburetor on the 590. It make a different that you will feel. I ve to say that I live in Germany. So the 590 and 620 are not so fare away from pricing.

Great information thanks

Taking out the rubber triangle helps get at the screws tin man

Awesome share!

Great topic tinman

10% gain for bolt-on parts is pretty amazing actually. The muffler may be holding it back a bit in this configuration but will be holding it back a bunch once you open up the transfers and raise the exhaust port. That's my guess anyhow. I think you will have a very nice, lightweight farm & ranch saw when you are done. Great video TinMan! Thanks

Very cool

I put a 620 cylinder kit and carb on my 590 big difference for sure

Someone needs to start turning out muffler mods for these popular echo saws. The only one I've been able to find was for my 2511T and it made a HUGE different.

I'm curious to see how the echo turns out. Buckin had your Homelite out today , love that saw .

Awsome...thanks

It would be interesting to see the original carb and coil with a muffler mod and then all 3 upgrades.

Well done informative vid and not too long because time well spent w no horseing beatin roun the bush talkin bout mama and them just useful worthile info Youd be a wealthy man if you could introduce swirl in the fuel/air mix if mix going thru crankcase 1st didnt matter . Makes easily noticeable improvement in torque w 4strokes and throttle response

👍thanks!

Nice

It's almost August here in East Texas 9:04 pm and still 101 degrees Fahrenheit and 98 percent humidity! I need to come visit you!!!

Nice video! I watch but rarely comment. What is that wonderful toy tach? 🙂👍

Looking forward to the porting. I wonder what porting alone would do

Really would be nice if you would leave the place you sourced the parts like other channels do.

Its the check valve that is the bypass or auto enricher which is limiting the tune. There is a smaller valve available walbro 86-578-1 or you can jb weld the little hole.

Thanks mate just hit the sub button. Good to see some genuine trial and error. Stay humble mate.

Thanks to you

I can tell it doesn’t scream but it does have a lot of bottom end torque. Without any money do.

Great video! So if I order a 620 carb,coil,and gut the muffler will I have to jet or adjust the carb? It’s a new 590 saw. Thanks

Still have to do the coil last thing I need to have a complete 620

Spray yerself in the chest! Very important! Lol. This ones good, Tinman, got a couple of the 590s in my family.

I normally learn from your videos. What I learned from this one is that I made the best choice buying the CS620PW over the CS490 and at a cost difference of $200. The 620 is more saw with more power and longer 27" bar. It's entry pro and magnesium, too.

Thank s!!!

Thats good to know,except mine won't start.I bought a new 590 and took it back to home depot,got another one,brought it home,and it started,yay! Then,4 days later,would'nt start,seems to flood easy,but do like the tip!

U need try a efco 6510 just picked one up man its nice probably keep up with your 562 was $619 after tax not bad for 63.4 ish cc saw 4 7 hp. So far stock it awesome just got it yesterday so ya got little but time of breaking it in

Echo’s run HUGE squish! Have measured 70-80 thousandths on the CS590/600/620 platforms, best mod is base gasket delete with case sealer bond.

I enjoy watching your video's. I recently bought a 7310, which I love. Could you tell me of a few mods that I could do to this saw to make it a little faster?

Hey tinman, very nice vid an good advice how to make a saw better cutting the easy way!

@Tinman the cs 680 is the way to go. Built rugged and revs to the moon.

Been 90sum here, hot, sunny bright day...rained its ass off...talk about humid..past 2 days for that matter apparently a hurricane went bye off shore of me

What fid you have to do to change the spark plug boot on to the new coil from the old one

Great video, obviously the carb and ignition will really pay off after porting. What brand tac is that?

Wonder if the same would apply to adding a 590 carb to a 501p? I am a husky guy picked up a 501p really reasonably like new. I muffler modded it and did a gasket delete and it seemed to help alot but still doesn't quite have what I think it should

The reason i thought warranty had something to do with it is my PAS/SRM225 trimmer is sprayijg oil out of exhaust and its a common issue. I dont know how to fix it. Incontacted them and they said "needs to run at full rpm alot". So ill try that but i ran it gull bire yesterday and sprayed a ton of oil lol.

I have a cs590 that's not even broke in yet. I'd be interested in seeing what just putting the 620 coil on it stock carb would do. . . Red screws fall out of a lot of carbs round here.

Tinman's I have this saw. Anyway I would like to see you using some type of hardwood. Not some pine or whatever you were using.. Good video. Honestly I don't think it is worth the cost for my requirements. Great saw for the monies.

Thought if they were semi fixed they had a small hole in the main nozzle on the diaphragm side. Mine does not

id love to send you one of my upgraded air filters for these saws!

Hey tinman, separate the air filter and pull that black Air horn out of it. Should work real Good with that bigger carb.

Tinman, what do I have to do to get one of these saws your modding? That 266 you built for Buckin has me drooling Everytime I hear it.

👍👍

Wonder how far you could take that saw power wise. Big bore piston on top of the mods you already made, wow!

those pesky plastic red things. Hope you find em tin man.

Do you have a video to show how to change the boot on the coil wire?