2003 ZR900 Jetting? - ArcticChat.com - Arctic Cat Forum

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post #1 of 2 Old 12-21-2009, 06:52 PM Thread Starter
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Sled: 2003 Arctic Cat ZR900
10-11 Mileage: 700
09-10 Mileage: 1000
08-09 Mileage: 1200
07-08 Mileage: 1600
06-07 Mileage: 1200

I have an 03 (carb obviously )zr900.I bought it used last year,and finally tore into the carbs this yr.Are the jetting charts right out to lunch on these or what?
It has 430 mains in it right now.I am at about 1000' above sea level,and will ride down to about -25degrees celcius (~10 below farenheit) also all the crap they call gas around here has 10% ethanol.So by the jetting chart I should be running 470 or 480 mains?does that sound right? seems like quite a jump
No mods other than a helix.I may be adding a tempa flow as well.I have one sitting here....
thanks for the help guys...
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post #2 of 2 Old 12-21-2009, 07:26 PM
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Sled: 2003 F7, 2000 ZR 600 2k edition
ATV: 03 650 rincon
Looks like 460 with ethanol at that temp range and 2000ft. And 500 with ethanol at 0ft, so 470 480 range should be about good for 1000ft id say.

AC engineers= k-5 Thief river elementary
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