needle jet on 05 400ex

[dixon_cass]

does any one know if my 05 ex has an ajustable needle dont want to take it apart if it doesnt have on. Hmf slipon on the way need help with jetting. elevation about 1400ft ride all year round. would like to run no lid with my k&n. please help

[dixon_cass]

can somone explain how to put a pic of my quad on my profile. i have pics on my computer just didnt see how to put it on this forum under my name. please help

[Honda#4]

I think yours is ajustable it's the 07's I think that are non ajustable. For your jetting start with a 42 pilot, 155 main.

[zrpilot]

Originally posted by dixon_cass
does any one know if my 05 ex has an ajustable needle dont want to take it apart if it doesnt have on. Hmf slipon on the way need help with jetting. elevation about 1400ft ride all year round. would like to run no lid with my k&n. please help

The 2005 does NOT have an adjustable needle... sorry. But the 1999-2004 needles work well.

HMF slip-on, no lid.

I'd run a:
170 K main
1999-2004 needle on the third notch up from bottom
#42 pilot

[Eviltanker]

You'll need to buy an adjustable.

[hornetgod13]

You can order a stock adjustable needle for a 1999 to 2004 carb (it will fit yours too) from www.servicehonda.com

Name: NEEDLE JET
Part Number: 16012-HN1-003
Price: $24.54

A DynoJet kit ($55.00) comes with an adjustable needle, 10 various sized jets, and the much needed "D" shaped fuel screw tool for 05 and Up Carbs. I got the kit and used the needle and fuel screw tool but, stuck with keihin jets.

I'd start with a 155K or 158K. I run a similar set up as you and I have a 158K Main and 42K Pilot with the fuel screw 2 1/2 turns out from lightly seated. Clips on 3rd slot down on the needle.

Here's a picture of my plug after jetting. Paper bag brown means you're dead on. It took a while but, looks like I got it.

[vze2hnvz]

You can also just buy a rebuild kit for the carb, as it comes with an adjustable needle and regular fuel screw. Here's one on ebay for 19.95 - Item # 260052521319. This way you can save the other stuff in the kit when you have to service the carb.

[dixon_cass]

ok so is there 5 slots on the needle? would third one down from top be right in the middle of the slots? i had a dirt bike that i jetted and it had an ajustable needle. it had five slots and i put it on the 4th down from the top. is the stock needle close or should i buy an ajustable and do it that way. thanks for the help guys!!!

[hornetgod13]

There are 6 slots on a Dynojet adjustable needle (see picture below) Start with it on the 3rd slot down from the top. If it bogs a lot at mid-throttle range than move the clip UP on slot. If it back fires or pops than move the clip DOWN one slot.