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This may be a dumb question but oh well. What are some tell tell issue that my carb needs to be re jetted?

 

it’s a 02 Foreman 450 S 

Snorkeled from breather box 1 1/2in to 2 in then has a 1 1/2 in plug thing 

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Is it not running right?

 

 I’m redoing the riser in a few minutes on my 06 500.

 

It would start cutting out if I gave it more than half throttle, and I figured out that 1.5 inch was starving it for air. I’m running 2 inch from the airbox all the way to the end of the snorkel now. The only 1.5 inch I’m leaving in place is the pipe that actually goes through the wall of the airbox.  

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I have 2 inch fittings going thru the air box walls on both my 450s.    I can say I never tried running it with 1 1/2.   So I can’t say if 1 1/2 is ok or not.  But I have heard it said so many times that you need 2 inch pipe with a 450.

 

to answer your question “ are you jetted properly “.  You do it by checking your plug condition against a plug chart 

 

lol  And if the person riding behind you is complaining their  eyes are burning from unburned gas might be a sign of over fueling 

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