1991 mariner 175hp carb engine

[Shill51]

The tag is missing on the intake silencer and I cannot find a manual online for it I am looking for the timing specs for idle and wot thanks in advance

 

[jimmbo]

There is Max Advance Spec, and a Primary Pickup Timing Spec. but there is no Idle Timing Spec.
What is the Engine's Serial #?

 

[Dukedog]

set max at 22*.. set pri/idle with boat in tha water, in gear to idle rpm/speed you and your motor are happy with.. book numbers don' mater for pri/idle.

 

[Chris1956]

Set primary pickup to 0-9*ATDC, and max spark advance to 21*BTDC. Those are standard for V6 carb Mercs.

 

[Shill51]

There is Max Advance Spec, and a Primary Pickup Timing Spec. but there is no Idle Timing Spec.
What is the Engine's Serial #?

0d050915 it was a efi magnum based off the serial number but I am not the original owner and I’m guessing some one has changed it over to carb