Located at the bottom of the pump casing. It features four distinct lobes that actuate the fuel plungers in the correct firing order.
: Denotes a flange-mounted design (no "S" typically indicates coupling mounting). 4 : Specifies the number of cylinders (plungers) it serves. bosch pes4a manual
: Look for a scribe mark on the pump flange and a corresponding mark on the engine block. The pump shaft is usually keyed, but it can still be installed "180 degrees out" if the engine was not set to the correct stroke. Fine Tuning Located at the bottom of the pump casing
: Set the control rack to the full-load position. bosch pes4a manual