Bad sparkplug or Wire. Or worse, bad coil pack or bad CDI or ignition or kill switch.
It should be the case drain. If the engine becomes flooded with water, pull the cable (and the spark plugs) and turn over the engine. The water will be pumped out. I think.
Because there is a design flaw in the Kawasaki water cooled engine.
Anyplace that sells spark plugs will have an application chart which will tell you what plugs will work in your Kawasaki.
It has 2 plugs NGK D9EA
kawasaki rouser, its a 135 cc 4 valve digital spark plugs machine against a 125 cc 2 valve single spark plug engine
kawasaki rouser, its a 135 cc 4 valve digital spark plugs machine against a 125 cc 2 valve single spark plug engine
Kawasaki stopped making the ZX9 in 2003. If it is any other year you have to take the gas tank off & the air box to access the plugs.
About 3 3/4 - 4 quarts. Don't forget to pull BOTH drain plugs on the bottom of the engine or you will leave about 1 qt of dirty oil in the engine.
When the engine is removed from the engine compartment, and detached from the transmission, there are freeze plugs on the back side of the engine. You may be able to just disconnect the engine from the transmission, and loosen the motor mounts and lift the engine partially away to replace the freeze plugs.
2
If the sparks are coming from the wires that fit onto the plugs change all spark plug leads. I can't understand how the engine is running at all.
There is 2 freeze plugs between the rear of the engine and the transmission. The freeze plugs are in the back of the engine block. Do not bother the big plug that is in the center of the block, That is the cam plug NOT A FREEZE PLUG. YOu will either have to pull the transmission are the engine to replace those 2 plugs.