3400 PSI Power Pressure Washer Pump for 3/4″ Shaft Horizontal Washer Pump 3.6 L by | Jul 21, 20261 x Pressure Washer Pump. Engine Type: Horizontal. Starting System: Recoil Pull Start. Pump Horsepower: 6.5-7 HP. Fuel Tank Capacity: 3.6 L. Pump Type : Axial With Alloy Pump Head. Shaft Depth: 2 5/8″(66.7mm).