115ETLF Carb question - CCW vs CW mix

[Popster]

Reading the Yamaha manual, it says to set the idle mix adjustment screws to 5/8 turn from seat.

The Clymer manual says start at 1 7/8-2 3/8 turns and then adjust CCW 1/8 turn till engine starts to load up, then turn screws CW 1/16 turn at time until fires even and rpm increases.

Does this mean that like my old ford 8N the idle mixture screws gets richer as it is turned in (CW)?

Any sense of which method I should use? The Clymer method seems like it should be more precise, but there is a big difference between 5/8 turn and 2 turns.

My nose tells me that the engine is running rich. (Presently set at 5/8 turn)

It also has a noise at low rpm that does not sound right. I'm trying to figure out how to describe it. I'll try to record the sound and try to find a way to put up a link to the sound file.

Edit to add:

When setting the high speed timing, the manual calls for 4500 rpm. I noticed that the screw hits the stop before the engine is a 4500 rpm. Does the engine really need to be at 4500 rpm, or just enough to be sure that the adjustment screw hits the stop to set the timing. I run the motor with the boat in gear on the boat lift.

 

[rodbolt]

Re: 115ETLF Carb question - CCW vs CW mix

set the carb as per yamaha and if all else is right it works.
check the fuel pump diaphram as well.
most yamaha carbs dont make the air/fuel mix change with the needles.
if your carbs have a pilot air and pilot fuel jet its among them.
F model is old enough I cant remember.
to set the wide open Throttle timing you really either need the test wheel or run it acrossed the pond .
free load at 4500 is NOT reccomended as nedle bearings tend to bounce and hammer at the bearing journals.