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.
Seeding. The best time of the year to successfully start grass seed in Connecticut is between August 15 and September 15. During this period, the seeds germinate quickly and the seedlings grow rapidly. Another time to start grass seed is in late winter or early spring.