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.
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.