I have no idea when the last time the water pump on my 2003, Yamaha 70TLRB was changed. With that in mind, I guess the time is right to service it. My question is this, is this a do it yourself job? I am pretty handy, built a lot of my house, did all the wiring, etc… If I can do this for the cost of the parts and lower unit lube I would love to as I can obviously save some money and learn something new. Am I correct in saying that it is just the impeller and gaskets/seals that get replace?
Not to hard on a Yamaha. Older Johnsons are a little tuff because you have to pull a linkage pin under the block that is hard to get to. Most impellar kits actually come with instructions. Make sure you install the impellar with proper rotation and lube the heck out of the impellar before inserting into pump housing. The shaft key can be hard to get out. Have to use some heat sometime to remove. Begin by trying to turn the bolts holding the hold foot on. Remember you have to remove the zinc, and there is usallaly a bolt under the zinc as well. If you cannot turn them, then I recommend taking it to a shop. If you shear one, then you are screwed. All in all, not too hard. Repair manual for that motor is very usefull if you want to be able to work on it on your own.
you can give it a try
only pain is the woodruff key usually binds in the driveshaft, and you have to be very persausive to remove it (aka a big hammer and chisel)
buy the kit, not just the impeller
if you come by the store, I will be glad to print out the diagram for you
we stock the parts
There are always greater fish than you have caught, always the lure of greater task and achievement, always the inspiration to seek, to endure, to find.
very simple on every engine i’ve evr done. (EXEPT A JOHNSON!!! STAY FAR AWAY) that being said ur yammie shouldn’t be a problem for anyone with moderate mech skills. i replace mine every other year. no problems
ITs not bad if you are handy. DId my 200 off a printout i got from Fla.sportsman forum. I was a little heavy to do with one person, but a 70 should be no issue.
I’ve done my 2003 90 yammy twice,once you get the old impeller out be sure and take off the covers on the bottom of the foot and flush good with water hose.I changed the impeller one time and some ckunks of the old one were still in the bottom unit.
I have a 96 Johnson 130 and it is a royal pain in the rear end to change the water pump (which I have done twice) compared with my friend’s 98 Yamaha 150, which I helped him replace the wp last year. If you are even a little mechanically inclined you can change the water pump in it.