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Discussion Starter · #1 ·
the yoshi people told me to us a 155 and a 150 jet and to turn the needle 1 1/2 turns or something and i called the dealership they said do use a 170 and 165 and a 25 pilot jet and they treid to sell me a jetting kit for 70$ im really confused on what to do ive never done jetting before help please i have a stock 660 raptor that im puttin a full yoshi rs3 and k&n with the airbox lid off
 

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Read the "carbs 101" sticky at the top of this form page:
http://www.raptorforum.com/index.php/topic,834.0.html

Needles don't turn, they have clips numbered 1 through 5 and are found in the top under the black covers in the diaphrams.
Fuel screws on the bottoms of the carbs are turned, 1 through 3 turns
Mains are the jets inside the float bowls that are in the gold shroud, right side is one size larger than left (ie 140L/145R)
Pilots are the smaller jets inside the float bowls. OEM is 22.5 but most up to 25 when adding a pipe and filter.
 
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