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  #1  
Old 01-24-2011, 09:03 AM
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Default My 1650 is backfiring from the exhaust....

I have searched the forums on this subject, it seams when the timing is off these they usually backfire from the carb. My 1650 is backfiring from the exhaust while running and eventually dies. Funny thing is it starts right back up? Any ideas would be appreciated.
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Old 01-24-2011, 09:12 AM
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The carb is probably set too lean.
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Old 01-24-2011, 09:21 AM
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That and possibly a sticky ex. valve.
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Old 01-24-2011, 09:22 AM
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Thanks Matt. I will try turning out the Idle air screw.
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Old 01-24-2011, 09:24 AM
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turn it in..
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Old 01-24-2011, 09:35 AM
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Quote:
Originally Posted by darkminion_17 View Post
turn it in..
Won't that lean it out further?
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Old 01-24-2011, 10:02 AM
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Give it a try and see what the results are.Most times you need to start at a baseline.Here is a chart that shows what yours is.
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Old 01-24-2011, 10:30 AM
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You need to turn the main screw out, not the idle screw. The idle is adjusted after the main.
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Old 01-24-2011, 01:06 PM
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I was looking at my carb and it only has two screws on it, they are both on the side of the carb. Which one is the main screw? On my old JD 112 there were three screws and the main screw was on the top and the idle screws were on the sides.
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Old 01-24-2011, 01:23 PM
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If you don't know where they are, look in your Kohler manual. The main screw is the larger one on top, and the idle is at an angle on the right side. If there's one on the body of the carb down towards the bowl, it's a Walbro, and you're probably SOL as far as adjusting it.
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