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i just jetted my rhino 450 when i first did it when i would take off slow it would stall. i messed with the air fuel valve and got it runnin good but how will i know if it is rich or lean? can someone give me a lil advice thanks in advance.
 

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set it back to factory then turn out a lil.
 

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Use a wide band air fuel meter. 12.5 to 1 is where you want to be. anything over 14 to 1 and your lean anything under 12 to 1 your rich.

Or you can read your plugs.

If you don't have or cant get a wide band a/f meter and or can't read your plugs have someone who knows what their doing jet it before you mess it up and hurt your motor. Running lean can be very dangerous.
 
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