When setting the engine timing, there are marks on the timing chain gears that align with colored links on the timing chain.
This is a big job, so take your time.
I attached the directions for removal and replacement of the timing chain below. These directions are specific to this vehicle and provide the directions for timing.
I hope this helps. Let me know if you have other questions.
See pics below.
Images (Click to make bigger)
Monday, July 26th, 2021 AT 9:44 PM