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Old 01-06-2013, 06:47 PM   #1 (permalink)
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High Idle

I have been reading several posts about high idle after running a while and needing to choke it to bring it down. I sprayed strarting fluid around the carb boots and the pto crank seal. No change in idle so I assume no leaks? Now how does one adjust the carbs after that. I noticed a screw in each carb with a white cap on it. I think it is to richen the mixture, but howthe heck do you get any tools in there to adjust? They are located on the right hand side of the carbs if you are sitting on the sled.

Thanks
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Old 01-06-2013, 08:00 PM   #2 (permalink)
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I'm assuming Mikuni rack style carbs... you probably need to turn the fuel screws out a bit to give the idle air/fuel more fuel. If it has air and fuel screws, turn the air screw IN to give less air. The screws with the plastic on them are easy to turn by hand. A tool isn't really needed.

Before you adjust the screws, turn them both in until they lightly bottom so you know what your initial adjustment is. Then go out 1/4 turn at a time from that initial adjustment until the idle returns to normal. Initial adjustment should be equal and about 2 turns out from lightly seated on the fuel screw.
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Old 01-06-2013, 08:11 PM   #3 (permalink)
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Yeah..I can't get my hand in there to do it very well. I'll wait and bring it in the garage to mess with it. Thanks
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Old 01-06-2013, 11:12 PM   #4 (permalink)
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you need to rent a kid
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Old 01-07-2013, 08:02 AM   #5 (permalink)
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Just went through this as well.. Dan, helped me out.

Turning in the air screw "A in the picture" did the trick.. 1/4 turn. If you have it. i have almost 200 miles on now and no high idle..

http://www.snowmobileforum.com/polar...crew-turn.html
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Old 01-07-2013, 08:32 AM   #6 (permalink)
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Good to hear
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Old 01-07-2013, 06:37 PM   #7 (permalink)
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I have 4 kids to choose from :P
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Old 01-07-2013, 07:21 PM   #8 (permalink)
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Ahhh, spares! My problem is both my kids are as big as I am
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