2006 Arctic Cat ATVs 400/400TBX/400TRV/500/500TBX/500TRV/650H1/650 V-Twin Service Manual, Page 341Get this manual
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ATV2073
6 Place the crankshaft on set of blocks; then mount dial indicator and base on the surface plateATV2072
4 Measure the crank pin diameter (A) and check the crankshaft marking