Hi,
If the timing isn't correct, do not crank the engine. This is an interference engine and it will cause internal damage if the valves and pistons make contact.
As far as timing, you need to take it apart. Otherwise, there is no way to remove tension from the belt.
If you look at the attachments below, they provide the directions for belt replacement. Follow these directions using your old timing belt. The timing marks are indicated as well.
The directions indicate making marks when removing the belt. That won't work if it is out of time. Make sure the marks on the camshafts and the crank are aligned as indicated.
Let me know if this helps or if you have other questions.
Take care,
Joe
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Saturday, July 3rd, 2021 AT 9:27 PM