Tp-8 a ventilation blower should be operated for how long after fueling?

After fueling, the power ventilation system should be turned on for at least four minutes before starting the engine. (This is to remove fuel vapors in the bilge.) Check for fuel vapors by sniffing the bilge. Ventilation should be continued until there is no smell left.

the answer to your question is,

old stone age.

-mabel < 3