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Author Topic: Dolmar 7900 basket case.  (Read 4401 times)

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Offline Cut4fun .

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Re: Dolmar 7900 basket case.
« Reply #20 on: February 18, 2012, 05:10:00 pm »
What did you end up using for topend? OEM 

Have you got to test run it yet?
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Offline man of stihl

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Re: Dolmar 7900 basket case.
« Reply #21 on: February 18, 2012, 05:31:33 pm »
OEM top end. Yes i cut with it. I think it needs the carb cleaned. It bogs between idle and WOT. The amish guy gave me a doner saw to get break parts off of. Its got a coil and carb i might take off of it to.
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Offline man of stihl

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Re: Dolmar 7900 basket case.
« Reply #22 on: February 19, 2012, 03:23:28 pm »
I'm having a difficult time getting that break spring compressed! >:(
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Ron

Offline 660magnum

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Re: Dolmar 7900 basket case.
« Reply #23 on: February 19, 2012, 04:15:02 pm »
My experience, you have to strap the saw down and use both hands on the spring.

You have to use a tool that sticks up inside the coils about and inch so the spring doesn't bend yet doesn't hinder you getting the edge of the coil in the trough.
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Offline man of stihl

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Re: Dolmar 7900 basket case.
« Reply #24 on: February 19, 2012, 04:24:35 pm »
Thanks. What a PITA!!!!
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Ron

Offline Cut4fun

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Re: Dolmar 7900 basket case.
« Reply #25 on: February 19, 2012, 05:24:40 pm »
Quote from: man of stihl on February 19, 2012, 04:24:35 pm
Thanks. What a PITA!!!!

Glad it's you and not me learning that.

I have froze my fingers off 3 times working on that stihl trimmer today.
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Offline man of stihl

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Re: Dolmar 7900 basket case.
« Reply #26 on: February 29, 2012, 05:54:41 pm »
I figured out the carb issue. The impulse line was too long and was kinked. I snipped 1\2 inch off and it runs good.
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Offline Cut4fun .

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Re: Dolmar 7900 basket case.
« Reply #27 on: February 29, 2012, 09:14:16 pm »
Got to love it when it's something simple.
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Offline man of stihl

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Re: Dolmar 7900 basket case.
« Reply #28 on: July 29, 2012, 01:45:27 pm »
I swapped the Zama carb out with a Walbro today. I can tell it has better trigger response all ready. Any one else do this??
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Offline Cut4fun .

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Re: Dolmar 7900 basket case.
« Reply #29 on: July 29, 2012, 08:03:35 pm »
That was one of the first swaps guys were doing when 7900's came out. Walbro off the 372's.

Check some of those hotter woods ports running around and the carbs on them.  ;)
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