150 Yamaha Carbs

[edgutgesell]

I am planning to replace the 2 fuel pumps on my 150 Yamaha (84/85 150ETLK). At the same time I am going to pull the carbs (Takei single float) and at a minimum, clean them. I am doing this as a preventive maintenance process, not because I have a problem to resolve. I have the following questions:<br /><br />1. What carb parts do I mimimally need on hand to do the cleaning? I was thinking that having at least 1 carb overhaul kit and new gaskets for reassembly after cleaning may get me by. <br /><br />2. To do just a cleaning, is there other necessary parts needed other than gaskets? The Yamaha carb overhaul kits for these carbs are fairly expensive! (over $100) <br /><br />3. Is there an aftermarket carb overhaul kit available? <br /><br />4. Since I don't have a known carb problem, should I leave the carbs alone?<br /><br />As always, your response is greatly appreciated!!!

 

[Ray Neudecker]

Re: 150 Yamaha Carbs

If you are going to just clean, then new bowl gaskets are in order. Not sure why you would clean a carb that is working properly though.

 

[ianyoung77]

Re: 150 Yamaha Carbs

The kits include floats, needle & seats and pilot screws. The needle may be worth replacing on a motor that old but I would only change the others if I found fault with the originals. I would also tend to leave well enough alone.

 

[bigbrownbuku]

Re: 150 Yamaha Carbs

instead of cleaning working carbs install a water separating fuel filter of decent quality, such as a racor.<br />the fuel pump service is a great idea.

 

[edgutgesell]

Re: 150 Yamaha Carbs

Thanks for the replys! The reason that I was considering cleaning the carbs is that reading posts on this forum about problems on an old engine like mine, it seems that cruddy carbs cause more problems than any other thing. Another reason that I was thinking about carb cleaning was that I recently cleaned the Yamaha fuel filter and it had alot of crud in it. I replaced the element and the o-ring. The filter obviously is doing it's job. I am definitely going to replace the fuel pumps and all of the fuel hoses at the end of this season, and install a water separator before next season. I hope I don't disturb too much dirt in the process.

 

[cpj]

Re: 150 Yamaha Carbs

Ed, when you change the hoses and pumps, first disconect them from the carbs.On my motor(85 yam 115)the gas line was bent in a U shape just like a P trap under your kitchen sink.After I had removed it, I looked inside it and there was quite a bit of crud in there.If you remove the line from the carb first, you reduce the chance of knocking that crud into the carb.I cleaned out my carbs 2 or three times before I figured out that it was coming from the fuel lines.But if you think about it,9 times out of 10 the crud doesnt magicaly appear in the carb all by itself.It has to come from somewhere.