Choosing the right water pump depends on the volume of water to move, the head required and the quality of the water. The JCB-WP50 suits irrigation and lower-volume dewatering where a 2-inch connection is adequate. The JCB-WP80 is the main site dewatering pump — 966 litres per minute through a 3-inch inlet and outlet with a 7-metre suction lift. The JCB-WP80T trash pump is specifically designed for dirty water containing solids up to 25.4mm in diameter — standard dewatering water with mud, silt and debris. For site dewatering, always calculate the inflow rate first and choose a pump that exceeds it. All models are recoil start and require the correct grade engine oil before first use — SAE30 or 15W40, 600ml capacity. Fit a strainer to the inlet on all models to prevent large debris damaging the impeller.