check ball? how to install

Beachrights

Cadet
Joined
Jul 17, 2007
Messages
17
I have a 1989 3.0 in a larson. Merc 2 bbl carb with the 90 degree accelerator pump. I am rebuilding the carb but I did not see 2 things in the bottom of the accelerator pump cylinder. No screen and no check ball. There is a very small area towards the rear of the cylinder where it looks like a ball might be? I have the rebuild kit and do not know if I need the ball and more importantly how does it get installed.
So.. Where should the ball be? Should I have one? How is it installed?
 

Reel Poor

Vice Admiral
Joined
Jan 29, 2005
Messages
5,522
Re: check ball? how to install

Most, not all, Mercarbs don't put the ball under the accelerator pump.

Mercarb2barrellaccpump.jpg
 
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