Impeller Change Mariner (Yamaha) 4 HP Outboard

[flauctionman]

gee I hope it works on my 2000 merc 3.3.  Shouldn't be much different.

[jacksonfearns]

great video.

having slight difficulties re assembling my outboard. I have the slightly later version off this outboard and the clamp for the gear shift rod came completely off. also is it a two part clamp because mine only appears to be one half?!?! thanks

[drsyn123]

@jacksonfearns

If it is a flat plate with 2 grooves in it, and a hole in the middle of the grooves, then it is a two piece bit. Maybe the other half has fallen inside? I can only see a 1 piece plate working if it has holes for the rods to go into, and there is some sort of split in the holes that closes up when you tighten the bolt, but I'm only guessing

Regards

Mick

[drsyn123]

No, you don't have to drain the oil from the gearbox. The impellor unit comes off with the gearbox. If your engine's overheating check the main waterways. I can't remember but I think it runs up the tube from the impellor, round the block and back down the central leg.

[46000rpm]

do you have to drain the oil out of the motor first. i have 4hp mercury 4 stroke and it over heats at full speed. but it still pumps water can you help

[andriipopa75]

thanks for video

i have this outboard but i don't know what specifications have original propeller.

mine is 7 1/2x7, standard for yamaha 

[mojocamping]

lifesaver, never owned a outboard ever, I knew it needed a waterpump kit cause no water coming out small upper holes, took it apart and yep, 3 of the six paddles on the impeller broken off, have a kit on the way. So glad I know how to do this....hope I can put it back together?....Maureen nissan 5hp 2stroke!

[drsyn123]

It's a long time ago now but I seem to remember the pipe came off with the lower unit. If it does, try flushing it with water to see if there's a leak. I'm guessing the main water return goes out down the leg / exhaust. don't know if a small hose up the tell tail hole would tell you anything. Might be worth a try.

[GMCownsall]

so my impeler is in good shape but my "telltale" still doesnt seem to be peeing out water, i have a 1988 4hp yamaha model 2stroke and i believe my water pipe might be cracked or has a hole in it right below the engine, it could also be clogged, how would i go about fixing that? thanks -Kurt

[THETMCLEODGUY]

thanks buddy, very good and exactly what I was looking for! you will be hated by the boat mechanics around the world......taking all this money out of their pockets!

[flyandes07]

Great instructional video! I was able to change the impeller in my Yamaha 2009 4HP. Thanks again.

[mayjunee]

Excellent video, very well made.Always wondered where the hell that damn Impeller was hiding.Great Job.

[antiussentiment]

great instructional video!!

thanks for taking the time to share your knowledge.

[no1saltydog]

Thanks for the great video,helped me alot! i need more help though..is the cooling/water tube that fits into the water pump from the motor a fixed/stable or loose/ manouverable unit(must it be manually aligned to fit into the water pump)..the reason i ask is because i have water spitting out of the key hole where the rubber bung seats.Is this normal or is the water/cooling tube faulty?There is water jetting out of the telltale pee-hole.

[bass109]

Jesus is coming soon! repent and prepare for the lord

[adam3916grant]

<3 watch+dollhouse <3

[northshoreliguy]

Excellent video, very well done! I have a 1997 mariner 4hp, very similar engine. I've removed the lower unit and replaced the impeller with out a hitch. However, when I try to reinstall the lower unit, the drive shaft won't go into the power head. I've tried pulling the power cord a bit but it doesn't seem to help. Any advise would be greatly appreciated.

[drsyn123]

@northshoreliguy .

Can you see up the hole? is it clear. Is the cooling pipe in line. I can only think of doing what you are doing. i.e. turning the flywheel as you insert it.

Good luck

[Breal191]

doll house? awsome.

Thanks!

[sajones22079]

I wish I had seen this prior to changing the impeller on my 5hp tohatsu. tohatsu impeller blades are straight and I needed to have the blades bent to the side to fit back into the pump. the trick I used was to cut the lock out of a zip tie and us it like a belt clamp. as soon as it started to slide in the pump I was able to remove the zip tie and push the pump together the rest of the way. I only say this to maybe be helpful to others attempting this repair for the first time. useful video.

[Airshootingpractice]

Hello there.

I also have a Mariner 5 Hp. How can I test if the impeller is working? Where is the pee hole? And where can I check the oil level???

Thanks a lot.

[drsyn123]

@Airshootingpractice

the pee hole is in the top part just off centre just behind the main leg on the LH side when viewed from in the boat. If the impellors OK & the pipes not blocked a stream of hot water will come out of this.

[Airshootingpractice]

@drsyn123

Thanks for taking the time to help.

Where i live there is no a marine shop of any kind, can I use an auto product as a gear lube for my outboard?

[drsyn123]

@Airshootingpractice

I think marine grade gearbox oil has some sort of water "repelant?" or something in it. You should be able to get it from the web OK. Failing that if you changed the oil more frequently that might be OK

[johndeeremaster]

@Airshootingpractice

Thats all I use in my classic outboards, just use 80-90 weight gear oil

[HnEhonda]

hey, i was wondering if you could tell me how to change the shift rod, i havea 5hp mariner.

[drsyn123]

I'm guessing you'll have to strip both parts out then try & get them welded back together. The lower bit of the rod usually just pulls out of the gearbox, so you might need to grip it with something then wack it upwards

[HnEhonda]

@drsyn123 well the lower part comes right out,  i was just confused, because i know forward is at the highest point. but if it goes down to neutral and i pull it back up to forward, i would think the rod would come right out, is there a way to get it to stay inside the lower unit?

[Motorfordtoyota]

mariner is mercury not yamaha

[Y0B0YCHRIS]

@Motorfordtoyota actually i have the same motor as him and mine has the yamaha symbol on the block because yamaha USED TO make mariner and then mercury

[iamyourgranny]

Thank you sir for this video! I have a yamaha 8hp which looks very similar. I think I can use your advice very well.

[Y0B0YCHRIS]

i thought mercury made marnier not yamaha?

[drsyn123]

Yes, I think you're right. Cheers

[dyanemaniac]

@Y0B0YCHRIS

well, if so than mercury, yamaha and mariner would be the same. I have changed the impellor of my yamaha 4 today and this looked EXACTLY the same. so i do think yamaha = mariner

[Y0B0YCHRIS]

@dyanemaniac no some mariners were made by yamaha and some are made by mercury because origionally, yamaha made mariner and then mercury bought mariner from yamaha

[chris42999]

This guy is a Youtube hero. Why cant more people do a propper job like this.Thanks for the expert and sensible advice

[molluscturtle]

Good video - I've got a Yam 15hp so the procedure looks similar. Mine's a 1998 with about 3 hours use - bought it with a boat and only used it once - I'm now having to strip everything and grease it all etc.

[drsyn123]

Try blasting water throgh the water intake. You might have a blockage somewhere.

[castles2hire]

Anyone know what i should do next,My yam 4 is not pumping water,had it to bits totest imppeler and it works fine.

What next.

[bateauvoile]

good video!

[frombris]

mate youve got the exact samel brand and year outboard i have except mines a 30 and has oil injection, bloody reliable engines they are

[drsyn123]

Reliable when working. No I can't complain but it's been letting me down lately so I have just stripped the carb tonight actually, blew it all out and it started the best yet.

I will post the procedure on here within a few days.

Thanks.

[dickaldordavid]

Nice video Sir! thanks!

Dave

[Pyromaceno1]

great video, very well explained i've got a 4.5 hp mercury from the 80s and this give me an idea what to do... Thanks *Mason*

[drsyn123]

I'm afraid I don't know. I just called in to a local chandliers and luckily they had one. I'd noticed a few on ebay before that though.

Cheers

Mick B

[abzde]

Great video, but what's the impeller id number? I've got the same motor as you, but I don't know which impeller to buy. Any help would be appreciated!