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Discussion Starter · #1 ·
I bought a 2002 400ex last night and it needs a new chain, and sprockets. What is the best chain at the best price? and also best sprockets at best price? and is there an Idol screw on these things? mine doesnt idol high enough. Thanks
 

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400ex

shoul be a black thumb wheel, or plastic knurled knob,on the bottom of carb, where you can turn the knob in counter clockwise to raise the idle. Check the vendors out on this site, or check ebay for a sprocket/chain combo-there are some good deals there for new unused parts
 

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Discussion Starter · #3 ·
ok thanks. and i just changed the oil and i put a quart and a half in it and the dipstick is reading upper. where is the oil supposed to be? in the middle of upper and lower or upper. i didnt start it up after the change idk if that makes a difference or nor
 

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ok thanks. and i just changed the oil and i put a quart and a half in it and the dipstick is reading upper. where is the oil supposed to be? in the middle of upper and lower or upper. i didnt start it up after the change idk if that makes a difference or nor
Anywhere in between the upper and lower mark is fine, but the upper mark is the full mark. Lower mark is the add mark.
 

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shoul be a black thumb wheel, or plastic knurled knob,on the bottom of carb, where you can turn the knob in counter clockwise to raise the idle. Check the vendors out on this site, or check ebay for a sprocket/chain combo-there are some good deals there for new unused parts
This is correct, but I believe you turn it clockwise to turn the idle up.
 

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Discussion Starter · #6 ·
alright guys i appreciate the help. im not much of a mechanic haha. im sure ill be asking questions in the future if i cant find the answer through searching
 

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If im not mistaken the front sprocket is 15 teeth and the rear is 38 stock. The best deal ive found on ebay so far is this____

RK CHAIN KIT & SPROCKETS HONDA TRX 400EX 99-04 : eBay Motors (item 230297051826 end time Apr-23-10 10:52:04 PDT)

It is the stock replacement tooth count u can always go down one in the front and i believe that improves torque or just stay stock but RK is a reputable brand and u get the x ring chain with it all under $100 bucks shipped.
I am kinda new to all of this so if any of this is wrong please guys feel free to jump in im still learning about all of this as well. Thanks
 
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