How to clean a carburetor on Tohatsu, Nissan, and Mercury 4cycle 4hp, 5hp, and 6hp outboard motor. I did not know how to winterize the outboard. I left the o…
Cleaning 5hp 4cycle Outboard Carburetor – Tohatsu, Nissan & Mercury
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Old gas will gunk up your carb with varnish.. ethanol added to gas makes it
worse.. Try using a fuel additive to your gas like Sta-bil Marine… cheap
insurance IMHO. Also if you have access to a good Ultra sonic cleaner that
will clean out those passages where you can’t spray into. I cleaned up a
really gunky hood fan with hot water and TSP in the ultra sonic cleaner..
wow.. your carb did not look bad at all.. just a clogged passage I bet.
You forgot to show how to remove the float and clean and inspect the float
pin.
GREAT VIDEO!!!!! Just finished my Mercury 6 hp Started on the second pull!
Runs and idols better than ever. Thank you.
Hey man great vid… Helped alot… I was wondering the small circlular
plate with a screw in the middle of it in the carb…should that be tight
and have no ” spaces” on the sides for anything to go thru.. I hope u no
what i mean
i dont know whats wrong with my engine but it wont give fuel to the carb i
have a 4 hp mercury
Thanks!, I saw the Torqeedo electric motor. Looked real nice!
I think the outboard is pretty durable as long as you winterize the motor
correctly and change oil based on the owners manual. I did not remove
gasoline from the motor when i left a long time. Thanks!
Are there air/fuel mixtures that must be set with the screws on the outside
of the carb? Or are you supposed to screw them all the way in?
I can confirm that this is identical to a 2005 Merc 4 stroke 5 hp. I could
not even get it to fire once until I performed this ‘cleaning’ procedure
and now it’s starting like new. Thanks very much for the video, I would not
of tried it myself without the clear procedure in this video.
Great video, Id been staring at the linkages wondering how to get it apart
until I saw this ! Carb cleaned and running well Thanks
I believe it is your clogged fuel tube. You can use a carb clearer and blow
the tube. Otherwise, it is the fuel pump. You can clean the fuel pump.
Thanks.
fantastic video. Ijust followed the procedure for my engine that was
running erratic. Now it purrs like a kitten. I should never have left fuel
in it over winter. Thanks so much for the video Dave
Great video, fast right to the point & done. Because I live on the water
folks think that I understand motors, outboards etc., the reality is that
I’m trying to figure out which side of the screwdriver to use. Anyway I get
stuck ripping their stuff apart & guessing how to put it back together. My
? is, I’ve never seen any type of gasket anywhere. No head gasket, carb.,
lower unit nothing. Right now I have a 5 & 3.5 hp Merc. A BF75 &100 & a
Rude6 & not a single gasket-is there a gasket fairy?
De nada,
thank You!
Excellent video . . . .I have a 2006 ^ HP Merc and have had nothing but
carb problems after the first 1 1/2 years. I use it on a 20 foot sailboat
weighing almost 3000 pounds and I just replaced the gas motor with an
electric Torqeedo which works fine. I do want to get the Merc running and
this vid is a big help! Thanks, Gil
muchas gracias amigo!!! un saludo.
Great video! Just another tip for other viewers: you can turn the black
arms at the top of the carb to open up the choke valve (the black disc) and
the throttle valve (the metallic disc) up a bit more so you can spray the
inside of the carb a lot better!
How would u fix a gas leak on a 5hp 4 stroke Nissan motor?
You’re welcome. I am glad that it helped!
You did not remove the float or the float valve…that should be part of a
cleaning. Good job overall.
Great How-To! How reliable has this motor been for you? I just picked up a
brand new one and I’m wondering what to expect over the years.