Pacer A Thermoplastic Pumps Honda Petrol Engine Small Carry Frame. Pacer A  Series Pumps, Self-Priming Centrifugal pumps, lightweight, chemically resistant pumps for water, salt water, waste water, mild acids and bases. The Pacer A  Pump is triangular in shape and features a larger reservoir for self-priming.  An alternative to the standard S series pump.