Author Topic: Dolmar 6400C  (Read 567 times)

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Offline Cut4fun .

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Dolmar 6400C
« on: November 06, 2013, 02:14:16 pm »
Does the C on the dolmar 6400C just mean it has a catalytic muffler on it? 
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Offline Cut4fun .

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Re: Dolmar 6400C
« Reply #1 on: November 06, 2013, 03:08:27 pm »
Looking to help a guy out that dont want to mod the Cat muffler.  Anyone have a dolmar 6400 7300 7900 muffler to sale?  makita 6401 7301 7901 also.

Found some for him at Chainsawr  http://store.chainsawr.com/search?q=dolmar+6400+muffler   
Anyone else?
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Offline 660magnum

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Re: Dolmar 6400C
« Reply #2 on: November 06, 2013, 03:16:49 pm »

AFAIK, the "C" just means catalytic muffler which is rather heavy
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Offline Treemonkey1000

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Re: Dolmar 6400C
« Reply #3 on: November 06, 2013, 08:03:03 pm »
Thanks guys I'm the one trying to find out. I agree the saw is a bit heavy not sure if it is just the cat muffler. It is a great saw and cuts like crazy. Now that it is past warranty I figure I would look into opening it up a little. I may just pop the muffler off and see what it would take to "fix" it.

Offline Cut4fun .

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Re: Dolmar 6400C
« Reply #4 on: November 06, 2013, 08:12:32 pm »
Does anyone know if the NON  CAT   muffler will bolt right in place of the CAT muffler. Just the muffler support bracket on the C version will be left off with the older style muffler?


Welcome Treemonkey1000   8)
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Offline 660magnum

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Re: Dolmar 6400C
« Reply #5 on: November 06, 2013, 08:15:26 pm »
This is a picture of my 6400 with the catalytic muffler. Take notice of the muffler brace and the little hole stuffers in the bolt holes.

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Offline 660magnum

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Re: Dolmar 6400C
« Reply #6 on: November 06, 2013, 08:20:50 pm »
This is the same chainsaw with a 7900 OEM jug and a regular 6400 muffler.

To change the mufflers, you have to order the top spacer and bolt for the early 6400 muffler.  You cannot use the brace with the old regular muffler.

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Offline 660magnum

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Re: Dolmar 6400C
« Reply #7 on: November 06, 2013, 08:29:46 pm »
To open up a cat muffler you have to grind the edge of the seam off to get to the insides . . . Then weld the muffler back together.

All the insides of the muffler should be cleaned out and a second external port added on the other side of the muffler.
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Offline Cut4fun .

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Re: Dolmar 6400C
« Reply #8 on: November 06, 2013, 09:12:36 pm »
Thanks Jim.  Thats the info I was trying to dig up for him.
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Offline Treemonkey1000

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Re: Dolmar 6400C
« Reply #9 on: November 07, 2013, 02:33:08 pm »
Thanks again guys. 660 did you open up that muffler before installing it? I am guessing just removing the restriction of the catalytic converter may allow it to breath a good bit better. I think I may just have to try the new muffler rather than trying to cut apart the cat muffler and welding it back together.

 

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