Honda 400Ex Carburetor Float Adjustment Free For You

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I have a 02 Honda trxex and it doesnt seem to stop leaking gas from the hose coming from the carb.

Honda TRXEX A - SPORTRAX EX Carburetor Diagram.

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I took the carb apart, new main jet, new needle (set to 3rd ring from top).

I didnt have a diagram I just replaced the typical 2 jets and idle adjust.Navigate your Honda TRXEX schematics below to shop OEM parts by detailed schematic diagrams offered for every assembly on your machine.

OEM is an acronym for original equipment manufacturer, which means that the Honda TRXEX OEM parts offered at wiringall.com are genuine Honda parts5(K).

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I am not racing and dont really need every pony the 400 is capable of so Im leaving the choke in for now.

Heres my problem- how the do i get at it without taking the carb off Is there a special tool Id like to do it while its running, but theres no way to get your fingers in there without burning the out of yourself.

You have to do it with just the right size screw driver at about a 45 degree angle.

In other words, you turn it about a 18 of a turn at a time with the corner of the screwdriver blade.

One more thing. If its starts easy when its cold, (not started for the day), Id bet its had the pilot changed.

With the stock pilot, its very cold natured and a little hard to start.

By turning it in you are reducing the fuel flow.

It def. is too lean--ANY pipe will compound the already lean condition from factory.

Heres what I have, White bros E series slip on, 155 keihin main jet, 42 keihin pilot jet, stock needle jet (3rd groove down), pilot screw 3 turns out, (3) 1-12 holes in air-box, KN filter with pre-filter.

Does this sound like a good set-up to you guys or would a KN or dynojet jetting kit be better.

I ran out of time before I got a chance to mess with the pilot screw.

Changing the pilot jet, with just stock motor, will help it start better when cold.

They are just to dang lean from the factory Im not sure if they do that for emissions or what.

Anyway, my 300 was very cold natured before I made the change.

The down side to going up on the pilot can be a condition of being too rich at idle and just above idle.

This would result in the quad being sluggish until 12 throttle or so was reached.

You could also see some black soot on your plastic depending on which pipe you run.

Alot of folks here have removed the choke completely and bumped up the pilot jet to compensate for cold start.

I think they pump the heck out of the throttle to nurse it to life when cold.