The first way is to look at the direction your inlet and outlet tube face in relation to where the spark plug is located. Look at the legs of the pump and take note of the leg that has large hole in it.
Hourleey 3/4" Shaft Horizontal Pressure Washer Pump, 3400PSI 2.5GPM, Replacement Pump for Power Washer, Power Washer Pump for
VEVOR Pressure Washer Pump, 3/4" Shaft Horizontal, 2500-3400PSI, 2.5 GPM, Replacement Power Washer Pumps, Parts Washer Pump, Compatible with Honda, Simpson, RYOBI, Briggs & Stratton, Subaru, Craftsman
TOOLCY 7/8" Shaft Vertical Pressure Washer Pump - Rear Inlet/Outlet Max 3100 PSI @ 2.5 GPM OEM & Power Washer Pump for Gas Wa
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Biswing Pressure Washer Pump, 7/8" Shaft Vertical Plunger, 3400 PSI Max, 2.5 GPM, Replacement Pump for Gas Power Washer, Rear
Pressure Washer Pump Power Washer Pump 7/8" Shaft Vertical 3400 PSI 2.5GPM
