New purchase, have some concerns - Page 2 - Honda TRX Forums: Honda TRX 450R Forum
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post #16 of 20 (permalink) Old 05-13-2019, 10:40 PM Thread Starter
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Ok, so I got the carb off. Here are some photos. I only got the bottom bowl off at this point but I didn’t notice a couple of things. There is a plug for a sensor that is not plugged into anything. (On the carb) Also there are set of wires up at the top of the carb that are cut.
The R&D a/f adjuster has a black rubber coating that is kinda ruined from the fuel leaking onto it. But the jet end of it that screws into the carb looks kinda like it is kinda dirty. (See photos)

As far as the pilot jet, do you recommend replacing it? Or should I just purchase a rebuild kit? If so do you know where you can purchase a OEM rebuild kit? All I can find on the internet is aftermarket kits. The main jet I could not make out if it was a 180 or 160.
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post #17 of 20 (permalink) Old 05-15-2019, 01:51 AM
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No need to replace any brass as long as they are the right side, 180-185 is pretty close 160 is way to small. Stock is 118 but the hrc kit bumps to 185 and it has been close for me in the past.

Carb does look like new gaskets and o ring would be a good idea. Try jets r us or sudco. Also it wouldn't hurt to try racers edge jonh stocks lots of stuff for fcr carbs but might have some stuff for these.

It's been a long time sence I worked on one of these carbs but it looks like someone cut the TPS wires, never understood why people do it but some do. It should run fine with them cut. I will check and see if I have a couple of these carbs, if I do and you want the TPS I'll send you one.
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post #18 of 20 (permalink) Old 05-16-2019, 07:36 AM Thread Starter
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Thank you Hawk-Trx. I ordered quite a few sized jets. As far the TPS sensor, I don’t think there is a plug for it on my wiring harness. Guy I purchased it from said that the harness was race cut. So I’m pretty sure that he only left what was essential. Thank you for your offer though.
I started disassembling the carb further last night. Is there anywhere in the carb that I should not be cleaning with carb cleaner?
I did purchase a rebuild kit from All Balls. I also purchased what was called the mid-body gasket kit. Ohh and also a new diaphragm. I just don’t want to accidentally mess something up that I didn’t purchase. For instance the slide plate and the floats. Can they be cleaned with carb cleaner or will it ruin them?
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post #19 of 20 (permalink) Old 05-16-2019, 07:49 AM
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Honestly, that carb is so scuzzy that I wouldn’t run it without a serious cleaning. I know you said you are using carb cleaner, but it needs more than that. I would go down to your local Napa and get a gallon bucket of carb cleaner, it’s different than the stuff you spray. It comes with a basket that you can put the carb in and dip the whole thing. You do have to remove ALL rubber and plastics pieces from the carb, but the stuff works well and cleans where you can’t see or get to. I would dip that carb for at least a day. Any little flake of that crud in the bowl could lodge into a jet or orifice and make it run bad intermittently, it’s worth it to just clean it properly now that you have it off and apart.

The slide and float can be sprayed with brake cleaner, but just be careful to not saturate any plastic or rubber with the spray type carb cleaner for too long and soften the material.
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post #20 of 20 (permalink) Old 05-16-2019, 07:50 AM Thread Starter
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Ohh and any recommendation how to clean the tank? As dirty as this carb is I definitely want to try and clean the tank but wasn’t sure what else I could do besides put gas in it, shake it, empty it and then repeat a few times.
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