11/20/2015 6:11 AM
Each of the gears timing mark should be perfectly aligned. The actual ignition timing comes from proper installation of the injection pump and correct shims. You will need to follow the steps in the manual for ignition timing, there should be marks on the flywheel for TDC and depending on what type of timing/engine setup it is there will some marks on the side of the flywheel when at TDC that will let you know if you're advancing or retarding the timing, this will also require fuel measurements from the injection pump at certain positions that lets you know you have proper timing. If engine is in unit then there should be a sight glass on the side to view timing marks.
Regards,