Husky 359 exhaust

[scrench]

All,

Looking at an exploded view of the stock muffler on my E-Tech Husky 359, I only see one exhaust port and that is on top of the muffler covered with a screen. However, when I run the saw, some exhaust seems to be coming out of tubes through the front of the muffler where the muffler mounting screws pass through. Is this normal or does the muffler have an exhaust leak? The saw was made in 2005 and the muffler is not rusted. Saw has been running fine even though the exhaust seems to be venting where I would not expect it to. Thanks.

 

[Urbicide]

There shouldn't be any exhaust coming out the round tubes in the face of the muffler. There is a 5mm allen head bolt in each one. Are they tight? You might get ahold of some chalk line chalk and put some in each tube. That would show an exhaust leak quickly. The exhaust flow across the top of the muffler is probably giving the impression of coming from the mounting holes. opcorn:

 

[Urbicide]

Oh, by the way, welcome to AS!

 

[scrench]

Thanks for the welcome. I have been lurking for about year so I thought it was about time for me to join. I started to visit this site on and off when I first bought a saw and started to cut through the 30 year old overgrown X-mas tree farm on my property. I have learned a colon load of good stuff here. When I started, I knew just enough to be afraid of everything having to do with chainsaws. Still am afraid but I just love the smell of two stroke exhaust in the morning and having another tree on the ground.

I tighten the 5mm muffler bolts and that seemed to help. There is still a wee bit of exhaust poofing out. I'll crank a little more on the bolts when the saw is cold and that may seal it.

 

[314epw]

don't worry about it!

Take the muffler off and do a mod on it! You will not believe the difference in power.About 20% more HP.Check the past threads in this forum.Just finished doing a mod on my 362xpg.Load but runs strong!!
Ed

 

[Revolution]

who can i get to mod my muffler on my etech 359?

 

[hammer0419]

I just sent mine to Northwest Chainsaw (he is a sponsor here) to get dual ported, $30 including shipping. Unfortunately I know nothing about welding so doing it myself was out of the question.

 

[TexasTimbers]

Unfortunately I know nothing about welding so doing it myself was out of the question.

Well, from the pictures I have seen on muff mods while perusing the archives they don't do any welding. They braze the pipes into the muffler. The metal is too thin to weld, although it can be done with the right guage wire and amperage settings, brazing is the correct method for this application. trying to gather enough info to mod my 372XP muffler. Think I am about there just from reading the archives.
Anyway, not trying to be a know-it-all, just wanted to point out the difference between welding and brazing. Brazing requires a torch. Welding uses, well, a welder!

 

[hammer0419]

Thanks for the info. Unfortunately I know nothing about brazing either. I can solder pipe so maybe there is hope!

 

[NORTHERN NYer]

I tig welded the muffler on my 359 when I opened it up. With a tig welder you can turn it down really low.
Do a search on 359 muffler mod.

 

[Jim Mesthene]

Brazing requires a torch. Welding uses, well, a welder!

I weld or braze very well with an oxy-acetelyne torch.

 

[rahtreelimbs]

This is what I did!

http://www.arboristsite.com/showthread.php?t=15967

 

[TexasTimbers]

Nice mod there rtl...

JimM, sorry bout the faux pas I didn't know it could be considered welding by using a torch until your statement caused me to look it up.

welding
n : fastening two pieces of metal together by softening with
heat and applying pressure

I'd say that's general enough to be able to include any 'ol method one might devise in order to heat the metal. I suppose one might be able to weld some metals with the sun and a magnifying glass under the above definition, although I don't entirely agree with it.