111
3 quarts
The fuel is inside the hood
Kawasaki recommends regular 10w 30 for the prarie 300
Try eBay.
Under gas tank passenger side
Try eBay.
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.
Biu
As you are sitting on the bike, it is on the left side, in front of the rear shock.
The best spark plug for a Kawasaki 300 Prairie is typically the NGK DPR8EA-9. This plug offers reliable performance and durability, which is essential for off-road vehicles. Always check your owner's manual or consult a mechanic to ensure compatibility and optimal performance for your specific model and year.
Underneath the engine, in the middle of the shield under the frame there is a oil drain plug.
Sounds like dirt/crud in the carb. You need to remove, disassemble, clean and reassemble the carb.