2007 Arctic Cat Y-12 90cc ATV Service Manual, Page 44Get this manual
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11Install the stator in the right-side crankcase cover; then install the two cap screws (coated with red Loctite #271)Tighten to specifications
13Press the flywheel key into the crankshaft keyway and install the flywheel on the crankshaftInstall the washer and flange nut; then tighten to specifications