Author Topic: 670 carburetor substitute?  (Read 470 times)

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Offline snowsalot

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670 carburetor substitute?
« on: March 02, 2016, 10:36:44 pm »
I have 670 super, the carburetor screws will not stay on settings. The carburetor is no longer available so I am wondering what my options might be. Is there a possible substitute that would work? Is it possible to install another cylinder and carb type such as of a husky? Any opinions I love my 670 just don't like adjusting carb screws every 1/2 hour

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Offline Cut4fun .

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Re: 670 carburetor substitute?
« Reply #1 on: March 02, 2016, 10:48:29 pm »
I dont know the saw carb at all on these?  @Spike60

This Jonsered 670 IPL shows a HS 230 carb.  http://www.jonsered.com/ddoc/JONI/JONI1994_AAaa/JONI1994_AAaa_I9400009_.pdf

Will a HS 234 or HS 260 from a 268 272 saws work?

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Offline farmboy

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Re: 670 carburetor substitute?
« Reply #2 on: March 03, 2016, 10:33:06 pm »
I dont know the saw carb at all on these?  @Spike60

This Jonsered 670 IPL shows a HS 230 carb.  http://www.jonsered.com/ddoc/JONI/JONI1994_AAaa/JONI1994_AAaa_I9400009_.pdf

Will a HS 234 or HS 260 from a 268 272 saws work?



230 draws impulse top of carb.  234 and 260 draws through intake block.  Should be able to use 272 intake block and 234/260 IIRC.  I'll look for another alternative Have some Dolmar HS carbs w/top of carb impulse.  Will look tomorrow.
Shep

Offline farmboy

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Re: 670 carburetor substitute?
« Reply #3 on: March 04, 2016, 10:16:54 pm »
Dolmar carbs didn't have impulse port on top.  Wiill look in Husky carb drawer.
Shep

Offline snowsalot

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Re: 670 carburetor substitute?
« Reply #4 on: March 07, 2016, 12:01:48 pm »
I have been roaming around on the Internet and have come up with the idea that if I get a carburetor from a husky 266(they are easy to get )and switch the top plate with my carburetor and plug the cylinder impulse port on the husky carb it might work. Pure conjecture on my part as I don't have the husky carb in my hand. Any thoughts?

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Offline farmboy

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Re: 670 carburetor substitute?
« Reply #5 on: March 10, 2016, 10:21:52 pm »
I don't see why not IMO.
Shep

Offline 3000 FPS

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Re: 670 carburetor substitute?
« Reply #6 on: March 10, 2016, 11:21:26 pm »
Do the adjusting screws have springs under them?   Also the carbs that come on the 670 should be easy to find on ebay if you do not mind a used carb.   I can look and see what is on my 670's that I have tomorrow. 
 Maybe the threads are worn for the needle jets and they are leaking air.  Just thinking out loud.
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Offline farmboy

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Offline 3000 FPS

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Re: 670 carburetor substitute?
« Reply #8 on: March 11, 2016, 10:24:30 am »
That is a good deal you found there Shep.
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Offline snowsalot

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Re: 670 carburetor substitute?
« Reply #9 on: March 11, 2016, 07:51:01 pm »
Missed the one on ebay, thanks though. It was off 625, would have fit but slightly smaller I beleive.
The older jonsered parts are hard to come by but there is some crossover with husky parts i beleive but I'm no expert. The carb pulse, and possibly the choke linkage being different.
I have done some reading on a "672" conversion that may be an option

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