Husqvarna 350 dismantling, modding, and assembly part 1

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Published 2015-01-28
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www.hlsproparts.com/?Click=48376

Chainsaws can KILL YOU.... I am not responsible for a saw that is put together poorly nor used improperly. Please watch this video and use this information at your own risk. This is not a HOW TO, but a How I do it video.

Today we have my longest video to date. Its taken many hours of editing to get it to this point. I don't know of any other video that takes a saw apart and puts it back together bolt by bolt like this one. This is my father's 350 which I put together for him last season. I simply wanted to see what was possible with it.

Thanks to www.arboristsite.com for all the help. Old-cat is mentioned in the video but there have been many others that have been very helpful. Many ideas and techniques here also come from watching Mastermind's vids, as well as weimedog. I'll try to post links and give credit where credit is due.

Stock #'s ... squish .065 (not .085), exhaust opening 103, transfers 122 and intake 70.

Squish tightened to 020 ... exhaust 109, transfers 128, intake 76.

Final #'s after porting exhaust 105, transfers 124, and intake 77.

Crank thread size is M8 x 1.0
Cylinder head bolts are M5 x .8

Flywheel is best removed with a puller fyi, rather than loosening the crank nut a bit and putting pressure on the flywheel away from the cylinder and hitting the cranknut....

During reassembly I should have tried the intake baffle and cylinder first to make sure it fit before I added loctite to the base gasket. Gotta also check case clearance on the clutch side and flywheel clearance as well.

A good video on 350's from weimedog (AFLEETCOMMAND is his youtube channel)

   • Husqvarna 350's "Tech Talk" (Saw Geek...  


part 2 link:

   • Husqvarna 350 dismantling, modding, a...  

If you want the hyway kit, its here:

www.hlsproparts.com/Hyway-Husqvarna-350-351-353-cy…

All Comments (21)
  • @s.b.393
    I just came across this video. I too have a 350 Husqvarna and love it. I always use ethanol free 92 octane gas in my small engines but back when I bought the chainsaw in 1999, the gas had no ethanol in it. I ended up injuring my shoulder and having 4 surgeries on it in a 5 year span. The chainsaw sat on the shelf for several years, maybe 8-10 before I made an attempt to start it again. I dumped the fuel out, put clean fuel in it and would you believe I only had to pull on it about a dozen times, if that and not only did it star, it idled!!! Unbelievable!! Terrific saw, I still use it today. Thanks for the video!!
  • @dtm1303
    Matt: I want to write to say thank you for your video series on the 350. While I am not interested in modding my saw, I did need to take it apart completely. I have had this 350 for many years and most recently it began starving for fuel. When I noticed the cracking in the fuel line, I was lazy and took it to a shop to have them deal with it. They changed the fuel line and that didn't help. So they changed the carb and that didn't help. Out of desperation, they put in a new spark plug - we all know that wouldn't help. So they called me and said, "we can't figure it out - it must be the crank seals, but we are not going that far with it. Please come, pick up your Huskie from Hell, there's no charge since we failed." Your videos gave me the confidence to disassemble my saw and as I did so I found that one of the bolts holding the bottom half of the crankcase together was missing, and two others were loose. So it was sucking air into the crankcase. I had it stripped down to the piston, but I didn't machine the crankcase block - I just wanted it back to the way it was - running!!! I took your advise and retapped each hole to 1/4-28 and picked up some matching socket cap bolts. I sealed the lower crankcase back together using Permatex form-a-gasket and the red threadlocker so those bolts NEVER work their way out again. I degreased and cleaned everything using naptha (camping fuel), which is an excellent solvent. Lubed everything as it went back together and I now have a saw that runs like new. Many thanks!!!!!!!!!!! Could not have done it without you.
  • @roncoleman9502
    Just found your channel and really enjoyed it. I have a 350 also and love it good saw. Thanks for your videos
  • @Pavel-gx4wk
    Добрий день Мэт,хочу узнать какой цылиндр лутшэ работает на хуз 350,от 346,350,351,353?заранее спасибо.
  • @twobyfour
    Thanks for posting.  I got a cheap 350 for small felling.  I no longer use it, but after seeing this, its going to be my `project` saw.
  • @Pavel-gx4wk
    Подскажыте где в европе можно заказать цылиндр для хуз 350?
  • @Ritalie
    There's a debate about if you have to remove the jug in order to replace the plastic intake clamp on the partition wall boot?
  • Can I change my cylinder and piston fron a narrow bore to a big bore on the same saw? I have a Husqvarna 350.
  • what the hole in between the black fuel line and the return nipple? my 350 is leaking gas from there
  • I highly appreciate your series on the Husqvarna 350, though I followed your directions with respect to the use of rope in the plug hole and fixed the saw. But the rope is now stuck between the piston & cylinder.. How to release it? In the Muffler port, I can see the rope squished by piston as it's stuck there! Please help advise, I've needed the saw for over a month and had to fix oiler seal after friend had beennusing it. Thank you!!
  • @1610nsb
    Thanks Matt for the fast reply appreciate your videos
  • @7eis
    Nice video. I've got a 351 and a 353. After working with 346xpgs at work, I feel like my saws lack quite a bit of rpm and responsiveness. Any recommendations apart from opening the mufflers and maybe advance? Cheers
  • @johnboath27
    Thanks for the video. Does the exhaust gasket go on after the heat shield?
  • @greenstar32
    Matthew, what is "squish"? I want to know more about what you're doing to this saw? I'm about to take my 346xp apart because it needs a new tank unit?
  • @jeff6365
    I need help! Husqvarna 460 Rancher here. I torqued down too hard on one of the bar bolts and snapped it in half. See pic. I have the replacement bolt but for the life of me CANNOT figure out how to get the old bolt out. It is not a model where the bolt comes out through the oil tank. I cannot find anything online anywhere on how to replace it on this model. Anyone have any ideas?
  • @1610nsb
    Hi Matt My Huskey 350 has a broken starter, the cord got caught in the flywheel when i was using it and busted it. also that little black plastic air baffle broke too, Do you have a video on this repair? and where do you recommend to get the parts? Thanks Paul
  • @dandifusco1868
    Hi Matthew. I have a jonsered 2166 and have heard about removing restrictors and port plates. This is going to make me look really dumb but are they talking about the exhaust port? If so, What plate would I be removing and what restrictions am I grinding out? I'm sorry to be so naive but I don't want to ruin a new saw but if easy enough, I'll give it a shot. Thanks!