Fuel line on 660? - Yamaha Grizzly ATV Forum
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post #1 of 42 Old 12-21-2011, 04:05 PM Thread Starter
 
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Fuel line on 660?

Hey guys,

I'm new here, but I figured this was the right place to ask a question that I have.

This morning I noticed a pool of gas under the atv, so I found the source of the fuel leak. It is coming out of the line coming off of the bottom of the carb, and ends in a yellowish transparent hose. That hose was hanging down near the bottom of the engine this morning, and I'm not seeing any obvious place where the end of the line is supposed to connect to. Where does the free end of this hose go, or is it supposed to hang free? If it's suppose to hang free, why is fuel leaking out of it? I'd post a picture, but apparently I can't yet.

Thanks
Jordan
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post #2 of 42 Old 12-21-2011, 04:53 PM
 
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That hose hangs down thats to get the water out of your carb after u drownd it. Theres a little screw on the bottom of the carb right were that hose goes in make sure its tight if its open gas will flow out

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post #3 of 42 Old 12-21-2011, 04:54 PM
 
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its the overflow for the carb its supposed to hang freely.
if its leaking when the bike is just parked then you need a new needle and seat.
make sure to turn the gas off at your tank when you aren't riding it you will lose the whole tank if your needle and seat are bad.

edit... yes that hose is also to drain the float bowl with the above mentioned screw

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Last edited by Civicgsr; 12-21-2011 at 04:55 PM.
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post #4 of 42 Old 12-21-2011, 05:35 PM
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I just changed my needle and seat with brand new parts and I've still got the same leak! Made me mad so I left it alone and haven't gone back to check whether float tab is set right or not. And I know the float is good. Just be aware that changing the needle and seat will fix it most of the time but not all the time
 
post #5 of 42 Old 12-21-2011, 05:41 PM
 
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cajun..... are you going to buy a golf cart too? lol

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post #6 of 42 Old 12-21-2011, 05:43 PM
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post #7 of 42 Old 12-21-2011, 05:44 PM Thread Starter
 
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Thanks, guys. The screw was seated tightly, so I don't think it's that. How involved is it to replace the needle and seat? Would that cause the carb to start leaking a lot of gas, all of a sudden? Are there any other possible causes?

Last edited by The_Jerbel; 12-21-2011 at 05:45 PM.
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post #8 of 42 Old 12-21-2011, 05:52 PM Thread Starter
 
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Is this the part you're talking about?

#19 on the diagram...
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post #10 of 42 Old 12-21-2011, 05:55 PM
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Quote:
Originally Posted by The_Jerbel View Post
Thanks, guys. The screw was seated tightly, so I don't think it's that. How involved is it to replace the needle and seat? Would that cause the carb to start leaking a lot of gas, all of a sudden? Are there any other possible causes?
Could be a worn needle and seat. Easy to change out. Could also be just trash stuck in the needle and seat. Both will cause the carb to overflow and gas could also run into the cylinder and fill the crankcase with gas. Check your oil for the smell of gas! Change oil and filter if needed. Always turn off the main fuel petcock to the carb when not riding or when transporting/trailering to prevent fuel from overflowing into the cylinder and flooding the engine.

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post #11 of 42 Old 12-21-2011, 08:25 PM Thread Starter
 
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Okay, so would you guys say that the needle and seat are the first things I should replace, or is there something else that is equally likely to cause this problem? If I should start with the needle/seat, is that #19 in the diagram I linked to above?

Thanks
Jordan
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post #12 of 42 Old 12-21-2011, 08:52 PM
 
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I had the same prob a month ago. These guys are awesome! I was told to tap the bowl.with something like a butt of a screwdriver. If it was the float sticking , that may help. It did! I had the tank off a couple days before, and may have stirred up some crap.
So its been fine since I did that, although I do shut the petcock off now when I park it, always!. I also have been adding seafoam to my gas regularly. That is good stuff! Bought a needle n seat just in case, but don't need to mess w it now!

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post #13 of 42 Old 12-21-2011, 08:58 PM Thread Starter
 
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Thank you, sir. And where is the bowl located?

Here's a pic, if it helps:

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post #14 of 42 Old 12-22-2011, 08:27 AM
 
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Top right side of pic. The hose that goes to the right attaches to it. Give that a few taps. See if it helps you. It did me. Of course, if I'm steering u wrong, I hope someone corrects me!:p:thumbup:

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post #15 of 42 Old 12-22-2011, 10:05 AM Thread Starter
 
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okay thanks for your help. So it's this guy?

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