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D17 carb adjustment
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Chris (swIA) View Drop Down
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Joined: 13 Sep 2009
Location: Prescott, IA
Points: 319 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris (swIA) Quote  Post ReplyReply Direct Link To This Post Topic: D17 carb adjustment
    Posted: 18 Feb 2011 at 6:49pm

I have having trouble adjusting the idle speed of my D17. I have books that list idle speed from 325, 400, and 575. What should I be shooting for? It seems that if I get below 500 rpms it dies. Adjusting the idle mixture screw doesn't seem to do anything.  I assume that I have something plugging the idle circuit in the carb. Has anyone had this problem?
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Brian G. NY View Drop Down
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Joined: 12 Sep 2009
Location: 12194
Points: 2244 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian G. NY Quote  Post ReplyReply Direct Link To This Post Posted: 18 Feb 2011 at 8:46pm
Yep,
 
I totally dismantled the carb, cleaned out all the tiny holes with tip cleaners and carb cleaner.
Then I blew out everything with compressed air and reassembled it.
Runs beautifully now.
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Dick L View Drop Down
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Joined: 12 Sep 2009
Location: Edon Ohio
Points: 5087 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dick L Quote  Post ReplyReply Direct Link To This Post Posted: 19 Feb 2011 at 5:34am
They have to be clean for sure but remember that the engine slow idle speed is set with the butterfly stop screw. The so called Idle screw (idle air fuel mixture screw) adjusts the fuel air mixture so the engine runs smooth at the stop screw setting. You can't get there adjusting one screw. 
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MACK View Drop Down
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Joined: 17 Nov 2009
Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 19 Feb 2011 at 7:07am
Throttle shaft may be worn causing the problem. MACK
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