Author Topic: 7900 Muffler  (Read 947 times)

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Offline KilliansRedLeo

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7900 Muffler
« on: June 18, 2014, 12:07:02 pm »
Anyone know if later black top 7900s have a cat muffler?
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

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Offline 660magnum

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Re: 7900 Muffler
« Reply #1 on: June 18, 2014, 12:35:32 pm »
I bought a 6421 that was a 2010 model and it had a cat muffler. It came from the factory set rather rich as did my 2010 5105 that also had a cat muffler which I changed to a 5100 muffler.

I have a 2006 7900 and it had a regular muffler.

I immediately converted the 6421 to a OEM 7900 and put a regular muffler on it. Both my 7900's have the HD filter that I installed.

I stihl have these saws.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

Offline Nathaniel Vansickle

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Re: 7900 Muffler
« Reply #2 on: June 18, 2014, 01:06:58 pm »
7900-7910 don't have cat muffler. 7910 has SLR. 6400 has the cat
5105H and 6400H in stock

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Offline KilliansRedLeo

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Re: 7900 Muffler
« Reply #3 on: June 19, 2014, 07:35:06 am »
Thanks 660 and Nate. I was wondering since the mufflers seem quite heavy compared to a Husqvarna or Stihl.
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

Offline Nathaniel Vansickle

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Re: 7900 Muffler
« Reply #4 on: June 19, 2014, 10:27:12 am »
If it is a 7900 muffler don't spend to much time on a mm. It doesn't seem to help much. Enlarge the opening and that's it. I keep the spark screen in place. 7910 with the SLR crap and 6400 with cat muffler respond to gutting the mufflers or just swapping to the 7900 muffler. 
5105H and 6400H in stock

Performance Outdoor Equipment
performanceoutdoorequipment.com
Dolmar, Echo, Jonsered


Offline KilliansRedLeo

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Re: 7900 Muffler
« Reply #5 on: June 19, 2014, 11:06:54 am »
Thanks Nate, did you get the package I sent?
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

Offline 660magnum

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Re: 7900 Muffler
« Reply #6 on: June 19, 2014, 11:21:18 am »
Keep in mind that there is a difference in the mounting of the catalytic and regular muffler.

The difference that effect us is that the top bolt is a different length and so is the spacer that goes along with the bolt.

So if you order a muffler you need to get the correct bolt and spacer also.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

Offline KilliansRedLeo

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Re: 7900 Muffler
« Reply #7 on: June 19, 2014, 11:31:02 am »
Thanks, Jim!
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

Offline Nathaniel Vansickle

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Re: 7900 Muffler
« Reply #8 on: June 19, 2014, 11:44:11 am »
Thanks Nate, did you get the package I sent?

yes I did. thank you!!!!
5105H and 6400H in stock

Performance Outdoor Equipment
performanceoutdoorequipment.com
Dolmar, Echo, Jonsered


Offline KilliansRedLeo

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Re: 7900 Muffler
« Reply #9 on: June 19, 2014, 11:48:57 am »
Found out that Hyway makes a replacement for the old 'windowed' 7900 piston. Ordered one and it came in today. Looks pretty nice, I will get pictures of it up a little later in the day.
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

 

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