2002 Yamaha Motorsports VK 540 lll Owners Manual - Page 49
2002 Yamaha Motorsports VK 540 lll Manual
Page 49 highlights
Main Jet Replacement Replace the main jet according to the setting chart which is available at an authorized Yamaha dealer. WARNING • Never remove the drain plug or the float chamber while the engine is hot. Fuel will flow out from the float chamber which could ignite and cause injury. Place a rag under the carburetor before removing the drain plug or float chamber to catch any spilled fuel. Handle fuel with care: it is highly flammable. • • Standard main jet: #141.3 Main jet 804-026 Mixture Leaner Condition Warmer weather Smaller No. Higher altitude Colder weather Larger No. Richer Lower altitude 1. Loosen the carburetor clamps and turn over the carburetor. 2. Pinch the fuel hose to prevent fuel flowing. 3. Remove the drain plug and install the proper main jet. 4. Assemble by reversing the removal steps. WARNING Be sure the throttle outer cable is firmly seated in the holder and the throttle operates smoothly after assembling the carburetor. 8-8