to determine correct position to install the distributor,
1. remove spark plug from #1 cylinder
2. crank motor with finger over the #1 cylinder plug hole
3. pressure pushing air out hole indicates piston coming to TDC (TOP DEAD
CENTER)
4. check timing mark on engine lines up with 0 (zero) on the timing mark on
vibration dampener.
5. insert distributor so that rotor points to #1 lead on distributor cap.
"Han" wrote in message
m...
I screw up... didn't read the manual carefully. How can I find out
the original position? or how can I properly re-install the
distributor? I have a 1978 mercruiser 260 (chevy 350 engine).

Thanks for your help.