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.
Temperature. Grass seed germinates when the soil temperature is 65 degrees and above. It's important to understand that it is the soil temperature, and not the surrounding air temperature, that is the trigger for seed germination.rass seed needs a minimum temperature of 65 degrees and will germinate faster at higher soil temperatures as long as the increased heat doesn't dry out the seeds and soil.