Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 320Get this manual
IMPORTANT: When using an impeller whose blades have taken set, face the curl of the blades in counterclockwise directionDO NOT install the impeller with its blades oriented in reversed direction from original rotation, or premature impeller failure will occur4Assemble the water pump impeller onto the drive shaft and down over the keyApply light coat of 24-C Marine Lubricant (92-90018A 12) to the inside of the pump coverPosition the water pump body over the drive shaft and water pump locating pinsRotate the drive shaft in clockwise directionwhile pushing down on the water pump body to ease the water pu mp over the impeller blades 52725
a Water Pump Body Water Pump Alignment Pins (91 82157 1Al) Drive Shaft (tum cloclwise while installing water pump body) Seal