Visit The Dirt Forum for More Information

Author Topic:   4412 Carb Question
posted April 13, 2004 11:21 PM
On the driver side underneath the float bowl there is what I believe is called the squirter lever.

What I need to know is what is that adjusting nut and spring that pushes that lever? What is it for? What does it do? How is it supposed to be adjusted?

posted April 14, 2004 08:35 AM
It is recommended to adjust the pump arm (using the adjusting nut/screw/spring setup) so that there is zero play between the pump arm and lever/plunger. This is so that as soon as the throttle begins opening, the pump shot starts and there is no delay (which translates into hesitation and poor throttle response).
The spring setup is actually there (IMO) as a safety device in case the pump bottoms out in its travel, as well as it acts as a "cushion" during very quick throttle actuation, so the pressure in the pump diaphram doesn't get so severe suddenly that it would rupture the diaphram and cause a severe fuel leak and possibly fire.

Hope that helps,


Back to the Archives