Water Pump Replacement

Butch Algier

Recruit
Joined
Jun 2, 2006
Messages
4
Force 70 HP 3 Cyl. Not sure of exact year or model. Need step by step info on removal/replacement of lower unit water pump. Any help out there would be much appreciated.<br /><br />Thanks<br />Big Butch
 

rg33

Petty Officer 2nd Class
Joined
Jul 17, 2005
Messages
183
Re: Water Pump Replacement

I would suggest you get a manual on your outboard. It is an easy job, but with any do it yourself job, everyone has a method. There is a connection for shifting gears. Do not know if yours is internal or external, book says drain gear lube and remove bolts under cavatation plate. Try doing a search using the word "impeller" in this section. You will find a wealth of knowledge from folks more knowledgeable than I. The search function is at the top of the page in red.
 

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,781
Re: Water Pump Replacement

The best is to get a Clymer repair manual for the step by step.<br />Many little hints and do's & don'ts to help you.<br /><br />The brief overview:<br /><br />Tilt the motor up 3/4 of the way.<br />For safety, trip the safety lanyard and disconnect the battery.<br />Put shifter into forward.<br />Take a permanent marker and mark the current position of the couple and jam nut on the shift shaft.<br />Loosen and disconnect the coupler.<br />Remove the trim tab.<br />Remove the bolt up in the trim tab pocket.<br />Remove the other 4 bolts holding the lower unit on.<br />Remove the lower unit.<br />Remove the waterpump housing cover from the driveshaft.<br />Inspect for pitting and wear.<br />Replace the impeller, making sure the key is in place.<br />Soaping the impeller and turning the flywheel clockwise as you replace the cover.<br />Screw cover down.<br />install the lower unit, make sure the water tube is connected.<br />May need to turn the flywheel to get the driveshaft to sync up.<br />Bolt her up.<br />Put a little rtv on the bolts to hold them in place.<br />Connect the shift shaft coupler.<br />Adjust the coupler so that you can get into F-N-R.<br /><br />This is from memory, so I may have missed something.<br /><br />Some guys will drain the lower unit and remove the prop before starting. It makes handling the lower unit a bit easier.<br /><br />I have a 1995 70hp, and it is a pain in the butt to get that shift coupler adjusted, so be sure you mark it with a marker.<br /><br />The Clymer manual has a separate section for:<br />removing the prop,<br />removing the lower unit,<br />replacing the impeller,<br />installing the lower unit,<br />adjusting the coupler/linkage.<br /><br />If the switchbox on your motor has a bunch of connections on the front, it is a 1991 or 1992.<br /><br />If the switchbox has 10 wires sticking out of it, it is a 1993-94-95.
 

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,781
Re: Water Pump Replacement

Oh yeah, grease the splines on the top of the driveshaft, BUT DON"T get any grease on the end/top. !!!<br /><br />See, told you I may have missed something.
 

Butch Algier

Recruit
Joined
Jun 2, 2006
Messages
4
Re: Water Pump Replacement

Originally posted by roscoe:<br /> Oh yeah, grease the splines on the top of the driveshaft, BUT DON"T get any grease on the end/top. !!!<br /><br />See, told you I may have missed something.
Thanks much from Big Butch. All assistance is appreciated. I have a manual ordered.
 
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