2007 Arctic Cat Four-Stroke Factory Service Manual, Page 516Get this manual
DRIVE SPROCKETTIMING MARKS LOCATION The following illustrations will provide all necessary information to relocate sprockets on the driveshaftWhen information is required to assemble the driveshaft, refer to the parts manual for model being worked on; then refer to the following illustrations using the part number listed in the parts manual as referenceWhen pressing new sprockets on the driveshaft, remember to align the sprocket alignment marks or the sprockets won't be timed correctlySee illustrations