Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 387Get 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 occur3Assemble the water pump impeller onto the drive shaft and down over the key 6Hand start two (2) fasteners into the water pump assembly and remove the water pump locating pinsInstall the remaining fastenersRun all fasteners down and torque to 60 lbin(B .O Nm)7Lightly lubricate the O-rings in the water tube coupling with 2-4-C wfTeflon (92-B25407 12)
BInstall the water tube coupling assembly to the
water pump ensuring that the O-rings are not damaged during assembly
IMPORTANT: If seal installed above pump housing is not at the proper height, air will be drawn into the pump resulting in overheating of the engine9Using tool (a) provided in seal kit (26-B16575A2) or water pump kit (B17275A3), press seal (b) down over drive shaft (DO NOT GREASE DRIVE SHAFT) until tool seats against pump housing