Replacing muffler 046 help?

[confused]

So I never do anything like this and I'm looking for some help from the venerable members here

I have a colleague in Canada that purchased the stihl 046 Canadian dual port muffler (man is it different than the original)

So I took mine off there was a plate behind the muffler but didn't see any gasket type material

Do I need a gasket or does this plate function as the seal?

Is there a torque spec ?

Do I need to put anything on the threads ? (Wax, loc tite, etc...)

The next step is tuning but I might pass on that

 

[stihl for life]

there should be a gasket see if its stuck on the back of the muffler or the cylinder port . the metal thing is a heat protection idk why they put them on but most of us take them off .

 

[pioneerguy600]

The gasket between the front cover and the muffler shell/can is not really necessary and won`t hurt a thing if its not there. It is a cheap pat and should be there to make the saw original.The gasket between the muffler and cylinder must be in there to provide a proper seal.

 

[confused]

Better to just get a new gasket instead of reusing ?

 

[Wood Doctor]

Part Number

Part #1125 149 0601 is what you need. Hard to believe it disappeared.

 

[confused]

Part #1125 149 0601 is what you need. Hard to believe it disappeared.

Thanks

Yeah there is nothing there

 

[confused]

Will I need two gaskets if I put the heat shield back in ?

 

[hotshot]

Just the one

Will I need two gaskets if I put the heat shield back in ?

No :msp_smile:

First the heat shield goes against the cylinder port, then the 1125 149 0601 gasket goes on after the heat shield

 

[confused]

Thank you

 

[confused]

No :msp_smile:

First the heat shield goes against the cylinder port, then the 1125 149 0601 gasket goes on after the heat shield

Curious

What seals the gap between cylinder port and heat shield ?

 

[redfin]

I just recently had to helicoil the bolts for my stihl blower. The muffler had camme off in use. I went to my local stihl shop for a new muffler gasket. The shop owner told me not tto bother but to just use rtv red.

I did what he suggested and laid a .120 bead around the exhaust opening. So far so good, I guess only time will tell.

 

[struggle]

The gasket between the front cover and the muffler shell/can is not really necessary and won`t hurt a thing if its not there. It is a cheap pat and should be there to make the saw original.The gasket between the muffler and cylinder must be in there to provide a proper seal.

and it is also quite expensive for what it is Mine tore and in proper fashion I figured I better replace it ouch I think it was close to $14 or more

 

[pioneerguy600]

Curious

What seals the gap between cylinder port and heat shield ?

The exhaust port flange is machined flat, the aluminum heat shield is flat, they seal together fine. The stamped steel muffler is not truly flat so it needs a gasket.

 

[pioneerguy600]

and it is also quite expensive for what it is Mine tore and in proper fashion I figured I better replace it ouch I think it was close to $14 or more

25 or so of my Stihls run fine without that gasket between the two muffler halves, no issues. Just my newer Stihls have that gasket, when they fall apart I don`t replace them.

 

[ncfarmboy]

25 or so of my Stihls run fine without that gasket between the two muffler halves, no issues. Just my newer Stihls have that gasket, when they fall apart I don`t replace them.

Me either not worth the $12-14 they cost. No problems without it.
Shep

 

[confused]

I found the gasket, little piece of metal that shaped just like the outlet port

So for clarification

From engine out

Heat shield/muffler metal gasket/muffler rear housing/front housing

Also would you put the seal and the heat shield in the dishwasher to clean them up some (while the wife is gone of course)

 

[confused]

Saw just got new plug and tune up

140 psi
And 14,500 rpm

This seem ok