another timing mark question

marunr

Petty Officer 1st Class
Joined
Jul 11, 2004
Messages
225
I've searched the posts and haven't found the answer for this. I have a 2.3l omc 1988. I'm trying to set the timing on the camshaft. In looking through the sight plug, there are 3 marks which look like prongs actually...2 smaller ones closer together on the left and a slightly larger one on the right. Which one do I line the cam pulley up with?
 
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