McCulloch Mac 120 Teardown for Maintenance and Inspection

[@moltopericoloso]

How refreshing to have something explained by someone who thoroughly understands what they're talking about. None of this making half of it up as I go along then digressing into an unrelated shaggy-dog story rubbish from you sir! Top marks all around (as well as for Part 1) plus extra credit for pointing out the potential pitfalls along the way; especially the not so obvious stuff. Details like that half-hidden spring, those double washers on the carburettor and the correct orientation and seating of the seals and cover in the points, etc. are easily overlooked (or even completely missed) particularly the first time around and are both time-consuming and frustrating to troubleshoot when you do. You really should do more of these videos; you're a good teacher.

[@overlycranked8674]

Your depth and breadth of knowledge on this subject is fascinating.

[@dcherau]

As a retired foreign car mechanic I have to say this the best engine tear down video I've seen yet, and I've seen a few. Nothing slip-shod about this presentation. He's obviously put in a lot of time into making it as clear and understandable as possible so that even someone without a lot of mechanical experience will get it.

[@gotchurebeacons-gaming9023]

Great video! Watched “part 1” first. Helping my father-in-law with his 110. This is identical to his and now I can go back through it for a much more thorough refurbishment. Thanks!

[@dennislamond1043]

Amazing how much engineering went into this little machine. Nice vid

[@johnclarke6647]

I liked your piece on the MAC 120. Excellent deemonsdtration and explanation.

[@ManicMender]

+John Clarke thanks for the kind comments, and stay tuned, I'm editing the carburetor rebuild video now, should be out in a few days.

[@SheikShak]

A very good video……best “tear down” I have seen….thank you.

[@johnclarke6647]

I have a frozen up Mac 120 that I got almost for free out in the shop. I have the cylinder full of Marvel and will get to it after I finish rebuilding a Stihl hs45 that I picked up in similar circumstance. I love my little MAC 32-16. I call it One Pull Charlie, because it usually starts in one pull. After cranking my big Stihl saws the little Mac is a doll. Thanks for the disassembly information on the 120. I will get around to it this spring when it warms up.

[@aeugenemartin]

Keep these videos up. This info is one of the reasons KZbin got to where it is.

[@PhilFeedback]

Thanks again for your help and support, I appreciate it very much!!!!

[@Fireball1800]

Just picked up a 110 and it needs complete rebuild. Previous owner used ethanol fuel and all rubber is rotten. good video. Now to find replacement parts.. will be a nice small saw for small stuff..

[@JOEZEP54]

I have not worked on a McCulloch Mac in some time. Nice detail in video. Stay well, Joe Z.

[@joishualau6394]

Exactly what I needed. Thank you, sir. Subscribed.

[@Sciencewithkids]

Thanks for the maintenance tips! Here to support you.

[@thienthaitran]

Amazing video. Thank you for making it. I am trying to tear apart a Mcculloch pro mac 510 and learn about how small engine works.

[@Norelikavilagkonyhaja]

Our dad love your video.We support you

[@jeffkelderhouse6354]

Excellent video, I needed this. Working on a Mini Mac 6, trying to restore spark. Basically the same design.

[@UFOGEORGE]

Most impressive video and detailed presentation and commentary ! It's a real shame you did not keep up with bringing out videos. I hope everything is well and that we will see new videos comming through after all ! Best wishes !

[@ManicMender]

Thank you very much!

[@JenSpice]

Great intro! Awesome how it's like watching a surgery being performed as you do your work. From one creator to another big thumbs up and I just subscribed. xoxoJen

[@QuickCookie]

Thanks for the video! What would be the best oil to gas mix ratio for Mac 140? 50:1 or 40:1 ,...?

[@bigsea1306]

Super great video i’m still a little paranoid about tearing down my little Mac 10 Thank I’m going to stick to my little Homelite XL2 and super twos for now thanks for the video

[@johnclarke6647]

Most points run .016 to .020 gap. If I do not know I set them at .016. Points arm is also probably made from a phenolic compound.

[@robanthony4042]

Hey bud great videos. Do you have a re assembly video?

[@jgibs81683]

I have the same chainsaw that leaks gas. I was assuming it’s the gas line (which is still may be), but after watching your video I think it might be as simple as that o-ring. Any idea the size of that o-ring? If not, you thing I’d be able to find it in one of those mixed bags of o-rings and rubber washers?

[@FULLMETALCAR]

Do you need to take the handle off to pull the engine out or just the bolts under the saw behind the air filter the tab under the saw and the bolt by the trigger and the front cover bolts

[@GamesAndGeeks]

Amazing, subscribed 👍👍👍

[@fibercouggocougs8656]

I have what I believe to be a later model Mac 130. Did the later models come without points? None are on the motor I have and no screw holes in the block to install them. Great video!!

[@BonGalabansafe]

That looks like a difficult to do, but its fun to watch. You got my support.

[@jedweaver5784]

It really not difficult at all and I’m 12

[@DJIncompetent]

A helper channel playlist sent me here to assist. I'll try to look for your Centipede teardown one day.

[@JakePlisskin12]

Man I just bought a brand new looking mini mac 120 for 25 bucks with the case 3 chains. The bar is barely even worn. And then just today I bought a a almost mint furry Eager beev for 20 bucks with two chains. The original bar is bearly even scratched. Both start 3 or 5 pull. I'm Syked becuase the first two I have looked like to got pounded on by the entire town. The 25 I have took me a while to realize the clutch drum rim sproket was blown out. Was so hard to move the chain. Took me forever to figure that out. I just didn't even think about it. Nice video though. Not to many mini macs vids

[@ironleatherwood1357]

Great video, my buddy just gave me one. Mine dosen't have a idle set screw, just a hole an I can see threads. Any advice will help.

[@JakePlisskin12]

Thats probably the reason I lost my spark I tightened that screw super tight that holding one of the points.

[@spartinaspartini]

Hi I am writing to you from Italy, they gave me an old Mcculloch 120 chainsaw, I did a restoration, but I have a problem with the piston rings. I removed the piston to replace the rings, but now I don't know how to put them back because the piston does not have a pin (stop / fixed connection point for the rings). I knew that in 2-stroke engines, the rings can rotate on the piston and break at a cylinder exhaust port. So what do you advise me? In what position should they be placed? Thanks.

[@fallingsuncreations9270]

Hey I was taking apart mine to clean the carb and after a few pulls it won’t pull good with the spark plug inserted, but when it’s out it pulls normal. I need help!!!

[@scottk.curtisdvm309]

Hi MM, hi, can you still get new or used gas tanks for a 120? I'm asking because I have one I'm trying to rebhab and all seems good so far but I wonder what's the chance that the gas which has been in there for decades, I think, clogging up whatever is in the bottom of the gas tank. I flushed the gas tank w WD-40 waited and a brown lacguer comes out but very slowly.

[@alfredoluciano5794]

Nice video 😁👍

[@tedmiller1745]

Question... I picked up a pair of 110's but it does not have the black plate under trigger. What is the difference in 110's besides auto? This just looks like an Eager Beaver. Thanks for the help.Finally, what spark plugs should I run in these?

[@MrCharlesCurrent]

Good explanation👍

[@str8byu302]

I have the same saw. It has fire and good compression but wont start. Any Idea's. Great Video's. Thanks

[@jameskrivitsky9715]

Thanks ! How much work is needed to replace the main shaft seals, and are they readily available parts ? Great video series...waiting for the carb rebuild. J K

[@waylonlegend4603]

How do you get the throttle wire back on while assembling

[@janovsk1]

Condensers for these saws are $$$ and hard to find.Would a condenser from a Echo chain saw work? They look similar.

[@charleswebb682]

I assume the engine has reed valves. Are they serviceable?

[@CrispyVideos]

We can do this! Good luck with the channel.

[@Angiesfarmlife]

Amazing channel.I found your name on struggleville list

[@bikermike]

nice how to from a fellow how to guy! I subd

[@estefaniasernarestre]

Hey i got a eger beiver 2.0 just went threw the carb all is good but the thing will only run for a few secounds with fule down the carb i know how to adjist the hi and low but it wont stay on or coule it be the case seal it feels like it has good compresstion whats your thoughts???

[@johnclarke6647]

I picked up a 120 for $20. It has a frozen cylinder. I have the cylinder soaking in MMO right now. I figure it needs new seals and bearings, plus a cylinder and rings. I figure some idiot let it sitting in the rain. It is second in line on my bench. I have a Stihl Hs 45 to rebuild before I get to the 120. The HS 45 has a similar problem - left in the rain. It has a growling bearing but pulls over, fine.

[@TheOfficialRemiMoore]

Very helpful!

[@ironleatherwood1357]

Idle set screw went???

[@hiphopman72]

Good video thanks

[@chickenhawkfarmstead8478]

saw your Channel on a struggleville.Net so wanted to stop by

[@girlsalwaystalk]

Great video..love your channel.showing you some love.I gave you a like and a big thumbs up "BIG KISSES"

[@wickedspray7475]

It's channels like yours that Make KZbin great and also why you (and me) are low on the sub count. You don't need a KZbin channel to watch so people search for a problem and watch videos and click off. Get the watch time but no love. LOL. Anyways here's some support

[@ManicMender]

Nice channel, and thanks for your help. I went over and returned the favor.

[@Fee.1]

Could I ask you some newbie questions by chance? Saw a comment you made on AvE

[@johnclarke6647]

The isolation washer is probably phenolic.

[@hamidhani3083]

thank you so much

[@johnclarke6647]

Phenolic is the word you are looking far. Lots of points had a phenolic arm for the points.

[@nickyogorman1590]

On my 110 ,if I disconnect my points wire I have spark, but if I connect it spark is gone !! Any idea's anyone ???

[@JameySaunders]

I hit your big red button! I could use some help.

[@mikesrandomvideos]

to the top lets go 212 please return strugglesville. sent me by

[@ManicMender]

Favor returned, great channel BTW. TheStrugglesville is awesome!

[@ProfessionalStudent]

I support you sweetie! If you go into any of my videos with the word "SUB" in the title, you will find 200+ creators in my description box who ready to support you. Let them know in their comments that Professional Student sent you. They will know :)

[@ManicMender]

I subbed. Thanks for the help. Evidently all us small creators have is each other.

[@McCullochMac6]

What happened? you stopped doing videos......

[@RETMAN1]

I Subscribed and like ! 275

[@CommunityToursAustralia]

Supporting u because your videos are so cool checkout mine from Australia and stay in touch cheats Dave

[@CamAndJayToday]

hello new friend here, creators unite, would love to see you drop by as well

[@familyfunchannel9435]

Awesome video my KZbin family!!! Hope you can visit with us!! #SmallKZbinrArmy

[@WorkingClassOutdoors]

Im here subbing and for channel support!!!! PRO STUDENT SENT ME!!

[@ManicMender]

Thanks for the support. I also subbed your channel. Good luck

[@adammillar4767]

phenolic

[@Running4urLife365]

42👍

[@jimmytsab1036]

Nice Support each other Thanks