When using the single-vacuum distributor, the vacuum hose runs from the vacuum port on the left side of the carburetor to the vacuum canister on the distributor. In that case, the vacuum port on the rear of the carburetor must be plugged.
For most cool season grasses and for folks living in northern climates, the best time to plant grass is in late August, early September. Depending on exactly the climate you have and the type of grass seed you're planting.
Plant native grass seeds. There is a narrow window here in early September, while the ground is still warm, in which native grass seeds may be planted and established. Divide perennials. Transplant or give away your divisions of: daylily, bearded iris, Shasta daisies, violets, wood ferns, and cannas.