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07 z400

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Old Jan 11, 2008 | 06:35 PM
  #1  
sk8emerica188's Avatar
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Default 07 z400

im planning on buying a full FMF exhaust soon. i was told that i will definately have to change the jet with a full exhaust or the bike wont run right. any suggestions on jet size?
 
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Old Jan 11, 2008 | 06:42 PM
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Default 07 z400

165-170 main, shim the needle with a very tiny washer & fuel screw out 4 turns from seated . All this with no airbox lid. If you're keeping the lid on, 145 main & nothing else,
 
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Old Jan 12, 2008 | 09:25 AM
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Default 07 z400

actually if you have to turn the fuel screw out more that 3 1/2 turens its time for a bigger pilot jet , stock is a 22.5 ,25 is the next step up .
 
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Old Jan 12, 2008 | 06:14 PM
  #4  
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Default 07 z400

i think im just gunna get a stage 1 fmf jet kit. then maybe ill the 2 if that doesnt feel liek its enough. i dont race yet but im working out and riding to get in shape becuz im thinking about it. so ill probably end up doign second stage anyway.
 
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Old Jan 12, 2008 | 10:09 PM
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Default 07 z400

It's your coin, but a $2.50 main jet, $2.50 pilot ( not even really needed ) & a .10 cent mini washer seems alot better than a $100+ "jet kit" But like I said it's your money, not mine.
 
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Old Jan 13, 2008 | 09:53 AM
  #6  
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Default 07 z400

fmf and moose makes a kit thats comes with all the jets and accessories for stage one and two for 60 bucks. and it comes with a book to take some of the guessing work out.
 
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