Thanks for posting the pictures so we know what you have. There was a ’61 Starflite, AND a ’61 Starflite Unicharger. You have the one without Unicharger.

There is a timing mark on the flywheel. There is also a timing mark on the recoil starter, with another directly below it on the block (water cover, I think) Rotate flywheel till all three are in line. There is a timing mark on the magneto belt pulley. When the flywheel marks are aligned, the belt pulley mark should be aligned with the button on the safety switch. If not, remove and reinstall the belt so it is.