Secondary Vacuum Break

Fig. 13 Secondary vacuum break adjustment:

1. Attach rubber band to intermediate choke lever to hold choke valve closed, Fig. 13.
2. Install angle gauge to set angle to specifications. Refer to Specifications Chart.
3. Using outside vacuum source, retract vacuum break plunger with a minimum of 18 inches Hg of vacuum, then plug air bleed holes if applicable.
4. Make final adjustment with vacuum still applied by rotating adjusting screw with a 1/8 inch Allen wrench, or bending rod as shown until bubble is centered.