Husky 142E muffler mod???

[Sean McGillicuddy]

I have to replace the muffler on my 142E chainsaw.
Should I modify it before I install it?
What would I do to modify it?
Just thought I would ask.
Sean

 

[Wildo]

If it is aftermarket the inside maybe empty and then you just have to open up the hole a little bit.

If it has stuff inside pray the halves apart and get rid of a good chunk of the baffles then open up the hole a little bit.

Reassemble,
put back together,
Run for a few minutes,
Adjust carb
ENJOY

 

[Sean McGillicuddy]

What is the benefit of removing the baffles?

 

[Wildo]

Less restriction

You don't have to completely gut it out just reduce the restriction a bit.
The aftermarket mufflers don't usually have all the EPA crap inside so they breathe a little bit better.
Don't forget to retune so you don't run it too lean.

 

[Sean McGillicuddy]

If it has stuff inside pray the halves apart and get rid of a good chunk of the baffles then open up the hole a little bit.

I have a stock replacement muffler..It seams like I would ruin it by prying it open.
Is there a trick to opening it up?
And what hole are you referring to???

 

[dougand3]

And what hole are you referring to???

The exhaust exit hole or slot. Normally on the clutch side or bottom front of muffler.

 

[Wildo]

It is a royal pain to pry it apart with a thin screwdriver but its easy to crimp it closed. If you are good at welding/brazing thin metal you can cut it open then close it back up that way.

The hole is covered by the spark arrestor.