Briggs & Stratton Vanguard 430000, User Manual

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10
12. Install float. Assemble inlet valve to float
( A , Figure 48).
13. Install float hinge pin ( B ), idle passage plug
( C ), fixed main jet with new gasket ( D ), and
new bowl gasket ( E ).
Figure 48
14. Install float bowl with new gaskets (Figure
49).
Figure 49
Check Vacuum Choke Break
A Mityvac® vacuum pump or equivalent is required
when checking and adjusting the vacuum choke
break.
Figure 50
1. Connect vacuum pump to choke break and
activate pump to specification shown.
• Specification - 4.0 -5.5 in. Hg. vac. (10.0-
14.0 cm. Hg. vac.).
Choke plate should partially open and pump gauge
should maintain vacuum.
2. Check dimension from edge of choke plate to
edge of carburetor throat (Figure 51).
Figure 51
• Specification - 0.550-.590 in. (14.0-15.0
mm).
If dimension is not to specification, the choke pre-
load lever must be adjusted.
Adjust Choke Pre-Load Lever
1. Release vacuum pump so that the choke
closes.
2. Manually open choke to end of travel and
hold in this position.
3. Carefully bend pre-load lever ( A , Figure 52).
• Bend lever to left in increase dimension
( B ).