Check the listing for details. 87-04 Yamaha YFM350 YFM 350 Warrior ATV mikuni Carburetor multi stage jet kit. Condition: New. Listed at 44.10 USD. This Jet Kit Fits 87-04 Yamaha YFM350 Warrior ATV Stage 1 , 2 , 3 , 4 , 5 / You get What's In Photo. Select the appropriate stage needed. Modifications to the air intake and/or Exhaust system to your ATV will change the air/fuel mixture to your carburetors causing a lean running condition. This kit includes 3 Pilot Jet ( #42.5 #45 #47.5 ), 5 Main Jets ( #147.5 #150 #152.5 #155 #157.5 ) and two needle shims for your carburetor. Multi Stage is for those experimenting with different engine, air intake and exhaust systems Modifications to the air intake and/or Exhaust system to your ATV will change the air/fuel mixture to your carburetors causing a lean running condition. Jet Kits will compensate for the lean running condition. Lean running conditions can destroy your engine and decreases overall performance. Jet kits are easy to install but does require some basic carburetor tuning knowledge. refer to your shop manual for carburetor removal and installation. International Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility.Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.