Anyone got a unwanted carburettor for a Yamaha 4HP so I can learn how to dismantle and service??

[tudorsailor]

I have a Yamaha 4HP outboard. I do not want to calculate the money I have spent paying mechanics to service the carb when it has become blocked.

ALthough I have watched when one mechanic slickly dismantle and reassemble the carb, I do not have the confidence to do this myself on board. So while I am stuck at home (outboard and yacht are in Greece) I thought it would be a good ideal to learn how to dismantle a carburettor at my leisure.

I therefore wondered if anyone would have one lying around that they do not want/need. I'd pay of course.

I have googled and looked on Youtube and cannot find a "Dummies Guide". If anyone knows of a good how-to-do-it, that would be most helpful

Thanks

TudorSailor

 

[Pasarell]

Can't help with a spare one but I stripped and cleaned one (4 stroke) for a friend selling the outboard last week and it was very simple. I'm the ultimate dummy when it comes to these things but after a friend helped strip my Mercury carb a couple of weeks ago I realised there should be no fear about it.
The carb is held on by 2 long bolts that need a 10mm socket to remove. 4 (I think) machine screws hold the 2 parts together so you have access to the float chamber and where fuel comes in. In the one I stripped down the needle valve was sticking so fuel not getting through. A squirt of cleaner and all was well. Very simple job and nothing to be afraid of other than fear itself!

 

[Fantasie 19]

Having watched a mate of mine do his on a 3.5 Tohatsu (so apologies not the same engine) it does seem that one of the most complicated bits is actually getting the carb out of the engine, once that's done then as Pasarell says, the cleaning bit is quite simple.. oh, and don't overtighten the bolts when you put them back in..

 

[Billows]

Since these carbs are so sensitive maybe a proper fuel filter required rather than the mesh usually employed in the tap

 

[tudorsailor]

I wondered about a fuel filter but it is hard to put in a 2.5m dinghy and an external tank. I don't think there is room in the engine itself.
I have invested in a cheap chinese carburettor from eBay. I will take it apart and reassemble at home and then keep as a spare. (Something to do while unable to fly out to the boat).

Thanks for the input

TudorSailor

 

[CliveF]

there is an Aussie guy on youtube DangarStu. has lots of useful how to's

He shows a carb clean and is clear , easy to watch and no annoying accent.
His way of doing it, and rescuing a dunked motor are the way i do it / did it so I feel he has a good take on the issues and is worth a watch.

When you do it just set out a clear CLEAN work area, covered with a clean cloth, have suitable cleaners / solvents and clean containers to hand.
Work methodically , don't force anything and as you remove bits lay them out tin the correct order / layout on a clean cloth outside you work area.

Then its easy to work back up your pile of parts as you put it back together.


Regards Clive