Choke Removal Tip [Archive] - ATV Riders Forum

y2k400ex

01-16-2003, 10:21 AM

If anyone wants to remove the choke on the stock 400ex carb here’s an easy was to plug up the shaft. All you need is a 6-32 counter sunk machine screw that is 1 1/4in. long, washer and lock nut. The head of the screw fits nice and flush in side the carb. Better than using JB weld that you would have to drill and grind out if you ever wanted to put the choke back in.

Steven

01-17-2003, 06:00 PM

I was going to use a few dots of hondabond.

RAPTORAZ

01-17-2003, 06:35 PM

The silicon would be a better option. If the nut should come loose on the nut&bolt idea, you can kiss you're motor goodbye.

y2k400ex

01-17-2003, 08:18 PM

Well I used a nylon lock nut with red lock tight and filled the hole with RTV. I would say its not coming apart any time soon, I'll post some pictures tomorrow.:devil

Its going to be around 25 degrees tonight so I'm going to test the cold starting tomorrow. Right now I'm running a #40 Pilot I'll see how it starts.

BKVIEW4U

01-17-2003, 08:38 PM

SO YOUR SUPPOSED TO PLUG A HOLE WHEN U REMOVE THE CHOKE? I DID NOT DO THIS . WHAT DO I NEED TO DO ?

redrider ex

01-17-2003, 08:50 PM

i left the arm inside my carb and just removed the butterfly

BrianWrightR6

01-17-2003, 09:24 PM

I used a little gasket maker. Seems to work just fine. You can see the BLUE gasket maker at the top of the picture.

400exRacerX

01-17-2003, 09:38 PM

Be careful with the nut & bolt idea cause if that nut comes loose your motor is sucking that nut right in.

SUPER_DAVE

01-17-2003, 09:52 PM

why would u want to take of your choke?

Nausty

01-18-2003, 01:48 AM

Originally posted by SUPER_DAVE
why would u want to take of your choke?

quicker throttle response, more power.

AtvMxRider

01-18-2003, 06:23 AM

Originally posted by redrider ex
i left the arm inside my carb and just removed the butterfly

That's what I did.

mxracer89

01-18-2003, 06:48 AM

so how much does this help your quad and can you tell me step by step how to do it

Steven

01-18-2003, 07:25 AM

click on f.a.q at the top of your page and there will be instructions on choke removal in there

mxracer89

01-18-2003, 07:28 AM

all right thanks

Steve-o 400EX

01-18-2003, 07:32 AM

I just left the lever assembly on.

2K1 300EX

01-18-2003, 09:28 AM

Originally posted by y2k400ex
Its going to be around 25 degrees tonight so I'm going to test the cold starting tomorrow. Right now I'm running a #40 Pilot I'll see how it starts.

You will have to go up a size on your pilot, my 300 will crank and stay running for 2 seconds at the most with a 40 pilot, so I have to put a 42 in.