450ES carb flooding - Honda ATV Forum
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post #1 of 16 (permalink) Old 01-10-2010, 02:58 PM Thread Starter
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450ES carb flooding

I have a 450ES that I use on my farm...great machine! Last night I noticed it was leaking gas out of the overflow tube so I pinched it off...should have shut of the petcock...but it was dark and I was tired. This morning the tank was empty and the bottom of the air box was full of gas. I drained the air box, tapped on the carb a bit, and started and drove it...about 4 or 5 minutes...then it died, The airbox has gas in it again...float stuck? trash in carb? How the heck do I get the carb off? I work on my Roadstar carb quite a bit...but know nothing about this ATV...never had any problems with it... I think I need an repair manual ...where is the best/fastest place to get one?
thanks in advance!
Bob
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post #2 of 16 (permalink) Old 01-10-2010, 03:18 PM
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Welcome to the forums. We have a link in the schematics section were you may be able to down load you a manual for a small fee.

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post #3 of 16 (permalink) Old 01-10-2010, 03:19 PM
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The float in the bowl is stuck if you can get the bottom of the carb off you can service the float. Check in the manual section there should be a download site.

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post #4 of 16 (permalink) Old 01-10-2010, 03:20 PM
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post #5 of 16 (permalink) Old 01-10-2010, 06:17 PM Thread Starter
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thanks guys...I downloaded the manual...all 86MBs of it... I will try to figure out if I need the take the carb off to fix it. If it's like my bike I need to take it off the first time to replace the cheap bolts that hold it together...the stock mikuni carb bolts strip too easy so I replace them with allen head screws...at least on bike carbs. This is the first time in all of the years I have owned it that anythig has gone wrong...probably dirt from the old gas can...my wife filled it last night just before this happened...I tapped on the sides of the carb several times today but it didn't help...
Bob
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post #6 of 16 (permalink) Old 01-10-2010, 06:19 PM
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Good luck!! Keep us informed..

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post #7 of 16 (permalink) Old 01-11-2010, 11:28 AM Thread Starter
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will do...
2 questions though...
1) will a 2000 450 carb fit my 2004? they are the same number but 1 ends in an "A" and the other ends in a "C"
2) how the heck do you take of/and put on the plastic body tabs like the 2 that hold the breather box on? I seems to break them off when I pry them up...?

thanks!

Bob
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post #8 of 16 (permalink) Old 01-11-2010, 11:40 AM
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Sometimes those things only go on once, but if you're talking about the black plastic snap in thingies, they should pry open for reuse, though they work better when brand new. You can of course buy replacements for not much money.

I would expect that machine has a fuel filter somewhere on it, so dirt in the gas can probably didn't do it, and that would tend to clog up the jets rather than stick the float. If you are going to have the machine sitting around not being used it is best to turn the fuel off and let the machine run until it runs out of gas, that way the carb will stay cleaner.
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post #9 of 16 (permalink) Old 01-11-2010, 11:47 AM Thread Starter
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thanks...
I will have to get some of the black plastic things because only one of the 3 that I snapped out yesterday is still good...
As far as using the 4 wheeler...we live on our 100 acre cow/chicken farm and use it several time a day every day...and have since it was bought new in 2004...
I will figure out how to get the carb off...right now it seems like it will take longer to get the breather box off than the carb... LOL.
thanks!
Bob
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post #10 of 16 (permalink) Old 01-11-2010, 11:50 AM
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It would probably be a good idea to use some seafoam fuel additive in your gas a few times a year. Even if you use the machine often, you may not run a full tank through it that often, so it might get old. Not sure how much you use it, but it won't hurt to treat your fuel occationally to help keep the stuff as clean as possible without manual cleaning.
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