Reply To: Need to line up marks on timing belt replacement?

[Richard Kirshy]

There are two timings that are required.
One being ignition timing which involves when the spark is introduced into the cylinder during the combustion stroke.
The other is cam / crank timing which is the one controlled by the timing belt.
Here is an explanation:
https://www.liveabout.com/engine-ignition-and-cam-timing-281468

Another with pictures:
https://www.carthrottle.com/post/the-ins-and-outs-of-engine-timing-and-what-happens-when-it-goes-wrong/