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post #1 of 11 (permalink) Old 08-23-2012, 09:52 PM Thread Starter
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Question reset idle speed

I accidentally inscrewed the idle speed control on my 02 fourtrax, not knowing thats what it was. now I need to reset it to the right adjustment. How do I reset the screw to the right position?
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post #2 of 11 (permalink) Old 08-23-2012, 09:53 PM Thread Starter
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Unscrewed.*
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post #3 of 11 (permalink) Old 08-23-2012, 10:26 PM
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Welcome to the forums. I always just set the idle speed by ear. But the proper way, is to set it at 1,400 RPM by hooking a tachometer up to it.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #4 of 11 (permalink) Old 08-23-2012, 10:42 PM Thread Starter
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I don't have a tachometer. How many times should I turn the screw and where should I start with it all the way in or out?
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post #5 of 11 (permalink) Old 08-23-2012, 10:46 PM
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Originally Posted by ddot06 View Post
I don't have a tachometer. How many times should I turn the screw and where should I start with it all the way in or out?
If you're adjusting the idle speed, there's no set number of turns. You just have to turn it until the idle speed sounds right. Just start it up and if it's not idling or idling too low, turn the idle speed screw clockwise to speed it up. If it's idling too fast, turn the idle speed screw counterclockwise to slow it down. Just go by the sound of the engine to get it close. If it's idling too high, it will jump or jerk when you shift into gear and if it's idling too low, it will probably stall out on you sometimes. Just keep adjusting it until you're satisfied with the idle speed. That's all you can do if you don't have a tachometer. And you need to have the engine at normal operating temperature when you set the idle speed. If it isn't, the idle speed may change after it warms up.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #6 of 11 (permalink) Old 08-23-2012, 10:48 PM
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And you are talking about the idle speed screw and not the pilot (air/fuel) screw, right?

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #7 of 11 (permalink) Old 08-23-2012, 11:12 PM Thread Starter
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Ya the idle speed screw. Thanks! I was just worried when it fired up and ran wide open.
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post #8 of 11 (permalink) Old 08-23-2012, 11:13 PM
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Quote:
Originally Posted by ddot06 View Post
Ya the idle speed screw. Thanks! I was just worried when it fired up and ran wide open.
If it's running wide open, just turn it down a little and then start it and adjust from there.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #9 of 11 (permalink) Old 09-17-2012, 12:06 PM
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Isn't there a way to turn a DMM ( digital volt meter ) into a tach?
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post #10 of 11 (permalink) Old 09-17-2012, 02:25 PM
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Only if it has tachometer as one of its options Foyota...

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