Yamaha 9.9hp Diaphragm Replacement

[@horsetrader186]

Greetings, I have the same motor. I'm just finishing up a complete servicing... consisting of re-build carb, re-build fuel pump, change all fluids and re-build/ replace water pump. As far as the brownish guck on the outside goes, I just put some acetone on a paper towel and wipe it down. All that stuff will come right off. I see that this video is from a few years ago but I just came across it. Good work.

[@slimshadycustoms]

Thank you for posting this. I have the same motor and same issue. I rebuilt the carb first, thinking it was the float, however, it still leaked. I was about to take it to the dealer and be without it for a couple weeks when I saw this video. Just ordered the new part and am 99% sure that is the issue.

[@rippedredneck07]

Awesome! Let me know if it works out.

[@slimshadycustoms]

@@rippedredneck07 It fixed it!! Saved me from a very costly repair bill and at least a week w/o my boat.

[@ttreska1]

Thanks this is just what I needed. My fuel line would not come off, even when I got take the clamp off, but was able to do it while still connected by the fuel line. Not as hard as it looked. Much appreciated!

[@lanceperkins6699]

Great video! I have the same motor and same problem. Any chance you have that part number? I can't find it anywhere! Thank you...

[@zanderzander-ut9qy]

Hello, do you have a move how to clean carb? I really nedd it, but i cant any abut this model.

[@dankroenke5119]

Try using toilet bowl cleaner in a 3:1 water to cleaner solution to clean the lower end. 2:1 if you need it to be more aggrressive and don't leave it on too long. RInse after a few minutes with water. It works great!

[@deanchildress4897]

Do you or can you make a video on rebuilding the carburetor? I need help with mine

[@deanchildress4897]

For that same motor please

[@rippedredneck07]

@@deanchildress4897Give me about a week. Going to be replacing the impeller this week and Replacing the Transom on a 1989 Sea Nymph! Thanks For Reaching out and Stay TUNED!

[@kieranlynch7742]

Which carberator is this I have trouble getting a replacement or a rebuild kit

[@deanchildress4897]

@@kieranlynch7742 it was for the exact same motor you were working on.. I figured it out already. If you do a video for the water pump it's up to you

[@kidritalin1]

@@kieranlynch7742 There's a OEM replacement carb here (for about $420) and a kit with jets, needle valve, and gasket (for about $25). I hope to find a rebuild video for this one too, but for the most part, all carbs function in a similar manner. www.wholesalemarine.com/sierra-18-7058-carburetor-kit/

[@kidritalin1]

For your fuel stains, first hit with a good oil and grease remover, then I would lightly hit with (wet) 220 then 360 then 600 then some 2000 grit and then a little buffing with toothpaste or car wax. If that doesn't work, then paint after the 360 and be done.

[@dominickdacosta8368]

Jason would be nice if you gave us the diaphragm p/n ?..

[@rockwasequim5924]

No not all need throttle, the leaking diaphragm was why you had to throttle it.

[@danielberry9478]

I know the chance of this is slim since u havent commented in a while. But do u have the part number. I've been searching everywhere

[@rippedredneck07]

Man.. you're right, I haven't been there. If you haven't had any luck by now I would suggest finding a site like boats.net and looking at a exploded view and parts diagrams there.

[@zanderzander-ut9qy]

Awesome video. Maybe do you have some video how to clean carburetor? I have the same version Yamaha high trust and I dont see anything about it.

[@zanderzander-ut9qy]

Hello, did you found any info how to clean this csrburator. I have the same problem.

[@habrule]

Brother What volume does this motor have? Say please 🙄

[@xyzreacts5753]

What year is it

[@rippedredneck07]

I really don’t remember, I’d have to look around for the book.. I have a 8hp oil injected Suzuki from the 90s now. I think this was late 90s Yamaha. Funny story about the Suzuki it got stolen and return after 2.5 yrs. police report did something after all.

[@kidritalin1]

My guess is 2001. Last letter of the serial number will give a year (like Z = 2001).

[@curtisletch6911]

Part number 6G8-14368-02-00

[@jasonnew4314]

9.9 yamaha 04 .. 4stroke will not peee.. totally replace everything and will not pump.

[@rippedredneck07]

Did you check thermostat?