Stihl TS-420 concrete cutquik cylinder and piston replacement

How I replace the piston and cylinder on a Stihl TS-420 concrete saw.

[@barrywaitkus3739]

What a great illustration rebuilding the saw. I like the tricks in the rebuild. Thanks for sharing this video.

[@egidioborg3421]

Very good video, I’ll be replacing mine soon, cheers.

[@billstmaxx]

also 5 minute of a pressure wash to clean it up before you take the engine apart!

[@diehardfan173]

22:00 minutes. That’s what it’s all about! Thanks for the tutorial.

[@Jim-ie6uf]

Great quality video, Lester.

[@lesteroliveintheshop9825]

Thank you

[@iftikartaxis]

Very good video thank you for taking the time to share it with us

[@paulgill9989]

As someone who has worked on a lot of 410's, just disconnect the carb boot from the 3 screws at the rear, putting the boots back on once the new cylinder is on is an absolute PITA!!! Either way good instructive video buddy :)! For your piston rings, slide one edge in then gently ease them round, will save you damaging them :) Putting those rings in either side of the piston currently fuel my nightmares haha!

[@dominjon41]

Wow it's amazing job

[@lesteroliveintheshop9825]

Thanks

[@nicholashollingsworth2670]

Thanks for this really helpful

[@billbkr32ify]

When a kit comes with crank case gasket and seals, you should replace them while it is torn down. Save the customer a lot of money when a crank seal goes bad shortly after, and it has to be torn down again.

[@juancardona8804]

Very good job sir

[@lesteroliveintheshop9825]

Thank you Juan.

[@deastman3606]

Nice one 👍

[@chrischiampo7647]

The New Kit Seems Like The Piston and Cylinder are Undersized to The Original 😐😐😐 Nice Job Getting It All Together 😀

[@Kazuya240]

sure did notice a size difference in parts.

[@eliasrocha8886]

👏👏👏👏

[@justinf1343]

Thanks for sharing. Are non oem cylinders generally crap compared to oem?

[@johnkosheluk1041]

If you take the carb off you can take the manifold off when you take the block off you put the manifold on the new cylinder

[@Saywershorts]

What r u using for a piston ring compressor. Look creative. I need one!

[@signwatcher007]

While setting my garbage containers out on a monday night, couldn't help but see one of these choice demo saws that he sat out next to his garbage cans, he being my neighbor who has some type of construction business. At first glance it appears to have a damaged top handle. Almost looks like it wouldn't start and it was thrown. so i grabbed it, .Over the years i have done a lot of repairs on 2 and 4 cycle engines.My dad taught me the basics and over the years he would do other more complicated tune ups , rebuilds, replace magnetos,fuel tanks , lines he did this work himself mostly because we were dirt poor, however when your young you just think your dad is showing off about how smart he is, i never realized how poor we were until i had my own family to worry with. Fortunately for me i always had some pretty good ideas on how to make lots of money and not be considered a criminal. Vending machines, tech, i had made my first million by the age of 25, started with a 20,000 dollar loan, paid it back in 18 months. I just turned my company over to my sons a few months ago we are nationwide, 357 employees 400 trucks thousands of accounts, net worth 782 million just the vending machine company, i think dad would be impressed RIP, i did a lot of work, at first, and i was extremely lucky several times, both my sons have college degrees but me only a high school diploma, many teachers said or thought i would never succeed at anything, fact is i succeeded at everything i did, failure was never an option, of course i rubbed it in their noses at class reunions, wouldn't you? And then, there was the high school girlfriends mother who knocked on my parents door and said keep your loser son away from my daughter , my parents looked at this pitiful woman and my dad said if your daughter is hanging out with my son then lady she mustn't be no saint herself, i made that woman's life a nightmare, why did she dislike me so much , she caught us doing the wild thing, dead up buck naked in my back seat instead of watching a movie. oh well

[@EduardoTrejo-qu6iq]

What does it mean when the concrete saw does explusions when you want to turn it on?

[@RexNoah]

Thats great...but I have something here to ask ...I have the same model concrete cutter , it cranks only but not starting, what is the main problem? What shall I do?

[@craigstyrin3453]

Nice video, i have a problem with a ts400. The piston has shattered and ive cleared all the bits out of the bottom where the rods are. Is there any tips you would suggest to clear anything that shouldnt be there please?

[@lesteroliveintheshop9825]

I generally will rinse it with gas and then blast it out with air hose.

[@craigstyrin3453]

@@lesteroliveintheshop9825 thank you lester, could you use carb cleaner? And re oil? Only other thing i havent got a air hose. Im sure its all out but im worried in case there is

[@lesteroliveintheshop9825]

@@craigstyrin3453 that would work fine.

[@craigstyrin3453]

@@lesteroliveintheshop9825 thank you Lester for replying 👌🏻👍🏻

[@toyotagtcoupe8487]

Split the case...there more than likely shards of piston in around the bearings.. I always split them incase and wash everything out

[@NEW-HORIZONS]

Where can I buy accessories (cylinder and carburetor) EK7301

[@elijahs6477]

What goes in the threaded hole right by the spark plug

[@thelousyfloridatravelers6390]

Compression release button

[@bigtexas7580]

*That unit needs cleaning bad.*

[@lukeriley6741]

Hey man what was the extra threaded hole where the spark plug goes?

[@lesteroliveintheshop9825]

For the decompression valve

[@lukeriley6741]

@@lesteroliveintheshop9825 sweet! Thanks. I just rebuilt the top end of one got a new jug and it had that there and my old one didn’t. Thanks

[@Kazuya240]

I'm thinking about rebuilding my 420ts piston and cylinder, I noticed my current piston didn't have one by the sparkplug area. Does it matter if I install a piston with the decompression valve if my 420st didn't have one? @@lukeriley6741

[@vasilegirigan5096]

💯💯💯👍👍👍🤝🤝🤝

[@mike_jay]

Hi, great rebuild. Can I ask what was wrong with the piston because it looked ok to me.

[@lesterolive]

The holes for the exhaust were stripped. I had already retapped them once before, so I had to replace this time. This model is notorious for vibrating them out. I probably do 8 or 10 of these a year. This is Lester Olive in the shop, I’m just under my other channel

[@mike_jay]

@@lesterolive I only ask as I’ve just taken the cylinder off my ts 410 because the compression was 75psi, tested via decompression port. I followed your video thx. But, there’s always a but. The cylinder and piston look really nice in my cutter. Rings look sweet, no scoring, hardly any carbon build up either. So I’m stuck as to why compression so low. Any ideas plz ?

[@lesterolive]

@@mike_jay are the ring free/ in good shape?

[@mike_jay]

@@lesterolive rings look great

[@mike_jay]

@@lesterolive 75psi seem very low to you.

[@dorothypaprocki3487]

the new cylinder i have has an extra hole next to the sparkplug hole,whats best to plug that with?

[@thelousyfloridatravelers6390]

The manufacturer makes a plug for it, or you could put a decompression valve there.

[@lesteroliveintheshop9825]

The manufacturer makes a plug for it, or you could put a decompression valve there.

[@billstmaxx]

wholly smokes you scratched the crap out of the side of that new piston... Junk now!!

[@davebartle9605]

Can’t believe you went to all that trouble changing the piston but when reassembling you didn’t put the plug and air filters back on first, all the cement dust and crap was everywhere being disturbed with a chance of getting into the bore resulting in needing a replacement piston 😂😂😂😂😂

[@lonestar456]

Enjoyed video...need a lil help...i need a piston cylinder kit for an echo CS-400 chainsaw S/N C09212057909..i cant find a kit...seems all that is available is the shortblock..would apreciate any help or advise or steer me in the right direction, Thanks

[@lesteroliveintheshop9825]

I’ll see what I can come up with

[@lesteroliveintheshop9825]

@Lone Star, I checked with my Echo supplier and they said the piston and cylinder was Available separately, but the cost was more than a short block.

[@lesteroliveintheshop9825]

@Lone Star, short block retails for 154

[@lonestar456]

I apreciate your help..i wonder why the kit for an echo is not as readily available as a Stihl

[@lesteroliveintheshop9825]

@@lonestar456 seems strange to me too. I was surprised when I tried looking one up online.

[@gordoo8351]

Welp safety ring 💍 went A wall where can I get another one ?

[@lesterolive]

Safety ring?

[@gordoo8351]

@@lesterolive the ring that holds the piston rod in place