1988 Suzuki 4HP DT4 Water Pump Impeller Removal

Quick and easy how-to video showing the procedure for removing the lower unit and water pump impeller for a 4hp model DT4 Suzuki outboard motor.

[@AAHKLEE]

I have a 1984 DT8 with less than 30 hours total use. It has only been in fresh water and always stored inside. Decided that at 36 years old it deserved a new impeller. This video gave me the excellent feeling of knowing what i am doing BEFORE I started on the project. Thanks for an excellent and easy to follow video.

[@drewsayer6708]

Thanks James for taking the time to film this impeller replacement. It’s taken the mystery right out of the repair.

[@chrysocolladawn7155]

I'm changing the impeller in a 5 hp since the water flow is intermittent, and this helped a lot! Thank you!

[@j-medsystems7142]

Also note a tiny little hole at the water pump housing, at the stub which connects the pump to the water tube. Thru this hole some water is sprayed on top of the housing where the driveshaft seals are located. If this hole is blocked and the seals are worn, pressurized exhaust finds its way in the pump causing bubbles and poor water circulation.

[@PeterLaszlo76]

Hy,thank you for video ,me i change olso impeller ,but the same water comming intermittent ,do you know what can be the problem?and its missing the little water exhaust gummi tube !

[@0012dominic]

Thanks for taking the time, very easy to follow.

[@patrickseverson9862]

Great instruction and good video to learn about this oitboard

[@johancarlsson7668]

Thanks for the guidance, nog I feel totally comfortable to service my Dt5! Also supercosy with the chicken sound in the background! / Johan

[@gorp27]

For some reason the sea weed or fishing line tangled around the prop and lower housing drives me up the wall like nails on a chalk board. I like your bench top lower unit stand.

[@captlarry-3525]

nice little outboard..with a bronze water pump ! been looking for a small outboard for the little boat.. and this might be a good choice.

[@graemeroeleveld1240]

Thanks for the vid, I have changed my impeller and still no water is coming out the pee hole, any suggestions, cheers

[@mattsavage1637]

I got the same problem

[@glendree1]

Thank you, just the help i needed

[@gatinho_prppreicanal1283]

I have one, 1994, it had a problem inside, I think that in the connecting rod shaft, I have parts for it in your country?

[@sandro2122]

Excellent video thanks

[@robbysteele]

hi and thank you for the video.. i have a suzuki dt3.5 i have just put a new impeller in it. could you please let me know if there should be a steady bushing or bearing for the drive shaft about half way down the shaft . i cant seem to find anything about it but i am sure something is missing from the shaft..hope you can help cheers rob

[@captlarry-3525]

two words. 1. Tripod 2. bungee cord ( to hold the lower unit up)

[@judydavejefferies4986]

Thank you very helpful

[@robinblok4082]

Thanks a lot. very helpful!

[@Mosstavitch]

This question isn’t water pump related but what oil weight can I use for my lower unit for my DT4.

[@joehozzy2616]

Hi, do these motors have a thermostat at all? If so, where is it located? thanks

[@briantoups7624]

james? do you or anyone know the settings for the float and two carb screws on a suzuki dt6 outboard ty

[@OlavoMateus-ko5wo]

Já fes erado ao arrancar a borracha da Rabeta ela tem um pino pra ficar no lugar

[@scottallen4745]

Just replaced the impeller in my dt6, now it's just blowing air out or the ejection port on the bottom of the motor. Any ideas on why?

[@blimited9053]

I have the same problem.. Did you fix it..??

[@markkzzz]

@@blimited9053 maybe you have mounted it in wrong way ? :)

[@blimited9053]

@@markkzzz No man.. It would be too easy... The problem with this engine is exost gas preassure which overcome water preass.. Motor most not be deep in the water and what I did is drilling new holes for exost and it work perfectly now.. :)

[@petermoyes8766]

i have a dt4 2 stroke ..........1997 suzuki ,does this have the throttle stop removed to make it a 5 hp ?or not on this model and year

[@petermoyes8766]

no i have a 2002 dt4 and its to old ,,the newer ones ,can be 5hp from the throttle stop removal ,and 6hp by changing the manifold ,carb ,and prop ..i was pissed i could not do mine

[@scottsoper2739]

Is this a long or a short shaft model. Did they make a long shaft 4HP?

[@brenan6]

Yes, i have a the long shaft 4hp.

[@ing2y]

I have an 83 Suzuki DT3.5, shift linkage loose forward and rear bolts undone but the foot won't come loose, any ideas?

[@neon922]

Lot if times the drive shaft gets gumed up and stuck in the bottom of the engine block. Give the lower unit a few wacks with a mallet downwards. Can also try tying a rope to the lower unit, hang some weights from it and then lightly tapping the sides of the lower unit with a metal hammer

[@larrydommer9109]

This is really a bad video for anyone who wants to try changing a water pump impeller on their own for the first time. First - You tore off the forward/reverse linkage access cover. Maybe You made a mistake and did that the first time you pulled your lower unit, but that cover is designed to stay on the motor, and you open it from the rounded side and then pivot it out of the way. Second - You put the woodruff key in backwards. Anyone watching this, and putting the key in like you did, will distort the impeller, and probably gouge the pump housing requiring an entire replacement. NOTE: as far as checking the orientation of the impeller, that was at best a very vague statement. The key slot on the impeller is cut so that the impeller can only go on the right way. The only orientation would be getting the keyway lined up with that woodruff key you put in upside down. Third - You left out the most difficult part of this change, and a couple of hints or queues to save some grief when reconnecting the gear shift linkage. If you don't mark the shaft or at least get a picture or measurement of how the shafts align you might not have reverse or forward without multiple adjustments. Also - it might help if you let people know that you might have to rock the prop back and forth, if the unit doesn't want to go back together. The spline at the top of the shaft has to align with the motor spline, for the lower unit to come together completely. Thanks for your video. I almost ripped off my linkage adjustment cover before realizing I was trying to remove it from the wrong side. I hope nobody actually put the woodruff key in the way you showed it in your video.

[@abowhand]

Good video, thanks!!!