Why Do Some Primer Bulbs Have A Hole?

Why Do Some Primer Bulbs Have A Hole? Forum Newbie the no hole primer is used when the primer is part of the carb itself. Yes the carb bowl vents through the primer hole on the engines with the primer mounted on the air cleaner. It is very common for the air cleaner backing plate, … Continue reading Why Do Some Primer Bulbs Have A Hole?