2006 Arctic Cat Snowmobiles Factory Service Manual, Page 649Get this manual
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Idler Wheel Selection Chart PIN
Color Spoke
1604-774 1604-774 1604-774 1604-774 1604-774 1604-774 1604-774 1604-774 1604-774 1604-772 1604-772 1604-774 1604-774 1604-772 NONE