Thread: Motor ID and "PEE STREAM" help....

On your first water pump replace, don't just get the impeller, go ahead and get the kit. It is likely you will need one of the other items, go ahead and have it to start with. If you don't need it then, keep 'em and NEXT TIME just get the impeller.
At my first change, I always do the kit, that gives me a reasonable base line. If the old stuff looks good, I keep 'em.
As mentioned, the impeller looses a lot of "Flex And Flick" being bunched up in that housing over time. I like to note direction and lube it well for that initial start up.
Oh, and then there's the thermostat...

The first Mariners were made by Yamaha. In mid to late 70's they were introduced in the US and sold by Mercury dealers. There was some kind of trade problems with the government. They then started resembling Mercury motors. I always liked the Mariners and thought they were the previous year model from Mercury, which wasn't true.

I had always thought Mariners were Merc motors too.

The metal tag on the side of my engine clearly says made in Japan. My Mariner 40 horse twin carb long shaft electric start is a 1988 model according to the certificate of title. If our you and had the foot removed to replace the water pump impeller. I would also go ahead and check the gear oil see if it's got water. If it does, do a little research on the various seals and to do this you made to rig up a little air pressure only about 10 to 15 lb and then use the soapie bubbly stuff to see if there's any leaks. And be sure to check where the ships rod goes into the foot because there is a little bellows type rubber seal there. Mine was bad and it was constantly getting water into gear case

Sent from my Pixel 7 using Crappie.com Fishing mobile app

Originally Posted by gabowman

I had always thought Mariners were Merc motors too.

My 1983 Mariner 5 hp is a Yamaha, my, 1994 Mariner 4 hp is a Nissan, My 2019 Tohatsu Jet is a Honda.....

Had a impeller come apart.... rubber parts through the system, real PIA, change the impeller, I change mine every 3 years or sooner, kit first time is the best idea, always carry a spare impeller in boat box.

Originally Posted by Mikie

The metal tag on the side of my engine clearly says made in Japan. My Mariner 40 horse twin carb long shaft electric start is a 1988 model according to the certificate of title. If our you and had the foot removed to replace the water pump impeller. I would also go ahead and check the gear oil see if it's got water. If it does, do a little research on the various seals and to do this you made to rig up a little air pressure only about 10 to 15 lb and then use the soapie bubbly stuff to see if there's any leaks. And be sure to check where the ships rod goes into the foot because there is a little bellows type rubber seal there. Mine was bad and it was constantly getting water into gear case

Sent from my Pixel 7 using Crappie.com Fishing mobile app

Gear oil looks good, motor kicked off and ran nice and quiet (but I kicked it off after 5-10 seconds of not seeing the tell tale water stream) This motor looks PRISTINE, outside and under the hood! I just had a stroke, then heart surgery, and found this boat to "flip" to basically cover my "out-of-pocket" expenses. I've changed water pumps/impellers on my other boats, and it isn't a tough deal.....usually an annoyance. HOWEVER, after being released from "ZERO ACTIVITY" restrictions to "LIGHT RESTRICTIONS", it is nice to be able to tinker a little (some much needed "therapy"). I refuse to sell anything that is going to give trouble to anyone on the water. I bought it with the understanding that it ran fine, but over the winter 5 years ago, a raccoon got under the tarp and destroyed everything. The person had it reupholstered, but couldn't get it all figured out with the wiring. SO, I redid all the wiring, went to fire it up to try it out.....NO PEE STREAM!

I have ordered the water pump kit, and will replace it when it gets here Monday. It will let me have a good frame of mind knowing that when I sell it, it is the absolute best it can be! I know that I wouldn't want my boat to break down with my kid on it when we are out fishing trying to make memories.....

That engine looks brand new. Rig should flip easily. My engine is faded scratched and shows signs of abuse from former owners, but with the TLC I give her she takes me fishing and brings me home safely.