Under gas tank passenger side
Underneath the engine, in the middle of the shield under the frame there is a oil drain plug.
The fuel is inside the hood
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Kawasaki recommends regular 10w 30 for the prarie 300
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3 quarts
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On most atv's the serial number is in two locations however on a 2003 Kawasaki Prairie 300 the serial number is in one spot. It is located under the frame on the driver shaft.
To get fuel to the carburetor on your Kawasaki Prairie 300, first, ensure that the fuel shut-off valve is in the "on" position. Check the fuel lines for any blockages or kinks that might prevent fuel flow. If the carburetor is still not receiving fuel, you may need to clean the carburetor or inspect the fuel filter for clogs. Additionally, ensure that the fuel tank has an adequate supply of fuel.
Biu
You need to drain the tank.