For your consideration is a pdf file:
2016 Arctic Cat ZR_XF_M 4000_6000_8000 2-Stroke Snowmobile models .pdf --210 pgs
2-stroke Models covered:
M 6000 141" SE
M 6000 141" SE ES
M 6000 141" Sno Pro
M 6000 141" Sno Pro ES
M 6000 153" Limited
......