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  Topic Review (Newest First)
01-10-2005 05:23 AM
DeaPee thanks again guys...It's all back together just waiting to get some new fuel in it. I don't even want to mess around and try to run this old stuff through it.
01-08-2005 09:58 AM
fuster And please buy new gaskets/o-rings for the fuel bowls.

Nobody likes a leak.
01-08-2005 07:44 AM
Dad Since the carbs are already off, you should go ahead and back the idle mixture screws out and clean those passages. They are the most likely to give you trouble anyway.

Fuster described that, first turning the screws in (CW), counting the turns carefully and NOT tightening hard against the seat, so that you can return them to the original setting on re-assembly. They likely have limiting caps on them but on at least some carbs those caps engage a tab on the float bowls. With the float bowls removed, they can be turned without removing the caps. If that's not the case then you'll have to remove the caps or file the limiting tabs off them.

Add Sta-Bil if you're going to leave it sitting for a long time again.
01-08-2005 04:00 AM
DeaPee Thanks for the advice guys. I actually just took the covers off the bottom last night and pointed the hose from the carb cleaner into the jets and sprayed it a few times.

On the one corner near the gasket there was some buildup (the bike was ran for a while but then sat for about 4 months not being ridden). I cleaned it all out of there real good.

I'm going to just get all new fuel and put it in today and see if she fires up.


Should I fill the tank all the way and should I dump STA-BIL (fuel stabilizer) in it (since it's winter)? Also, once I dump it in, should I run it for a while and just shut it back off or should I leave it run, turn the petcock to OFF and let it run out of fuel on its own until it stops running?
01-08-2005 12:27 AM
fuster You should not have to clean the carbs at all on an '04 bike. The jets should be clean. If you remove the fuel bowls and there is a bit of sediment in them, clean them out, but I would leave the rest of the carb alone. Gas is clean, and riding the bike will do the job to keep everything clean. It is when it sits for months and not used that makes the carbs, over a period of many years, get gummy. And it is from not draining the fuel bowls in the winter. But it takes SEVERAL winters of that to warrant dismantling the carburetors.

If you take out the jets, which I really do not recommend on any bike unless you really feel there is a great need (and it better be real important) to do so, they must be screwed back in exactly the same number of turns as you had to do to remove them. If you have had clean fuel and have not dropped a sandwich into your gas tank or something, (and even then it gets caught in the fuel tank screen), you probably have a clean interior carburetor.

If you still feel compelled out of pure obsession to remove the jets, you have to count the number of turns you unscrew them from their original position so you put them back in correctly. Don't play doctor with them and mess with the turns. Put them back the same as they were from the factory.

01-07-2005 08:43 PM
Rundog Those are not the jets, the first pic looks to be a choke fuel inlet, and the seconds look to be idle circuit inlets. I don't know why one sits up higher than the other, but I'll tell you what I do know...

Take a look at your second pics. Put your cursor in the middle of the red circle to the right. Now move your cursor about 2 inches downward and to the left (8 o'clock). Now your cursor should be pointing at a screw, one of four which holds the bowl onto the body of the carb.

To get to the jet, you would remove the carbs from the motor, turn them upside down, and remove the four screws holding the bowl on. If they stick, lightly tap them with the screwdriver. Do not use a great deal of force on any carb components. The jet will be the brass screw with the hole in the middle. Do not stick anything in the hole if at all possible. To clean, get a can of carb cleaner, attach the little red hose to the nozzle, and press the tube against the hole in the jet to clear it.

Before you go through all this, I would suggest you carefully check the following, because the bike is really too new to have dirt or old gas problems..

If there is a gas tap, make sure it is set appropriately for the amount of gas in the tank (Needs to be on RES if there isn't much gas in the tank).

Check to be sure all vacuum lines are in place, and none of them are kinked.

Good luck
01-07-2005 08:24 PM
DeaPee OK well, I searched the internet for a while and learned a few things. Took it apart fully and cleaned out the real jets. I'm in the process of putting it back together (it's going to wait till tomorrow lol).

Still, I'm curious as to why one of those things is bigger than the other though.
01-07-2005 06:06 PM
little help with carbs...

bike is a 04 ninja 250 (my girlfriend's bike btw). it will run on the choke but as soon as i touch the throttle it dies.

So people told me to clean out the jets -- easier said than done.

I took out the carb and am curious as to if these are the jets...

If so, do I just take off the rubber line above it and blow through it with my mouth? Or would I need high pressure like an air line -- and should I spray carb cleaner through it too? Thanks.

Also...what are these, and why is one bigger than the other...

Thanks a lot!!!

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