Yamaha VK540EG Owner's Manual page 49

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
Smaller No.
Larger No.
1. Loosen the carburetor clamps and turn over the carbu-
retor.
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 assem-
bling the carburetor.
Mixture
Leaner
Richer
8-8
Condition
Warmer weather
Higher altitude
Colder weather
Lower altitude