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Put the bike in second or third gear. hold in the clutch and start building speed. The faster the better, then let out on clutch quickly and if motor fires, squeeze clutch back in to keep it running.
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I am not sure why others are recommending a carburetor rebuild - that has nothing to do with "how to jump start a CRF230F..."
If riding with others (as you should ride with at least one other person), you can disconnect and remove the battery from their bike, connect it to yours, and use your electric start. This is, of course, if the other rider has a battery in their bike and you have a 10MM wrench to remove the side covers and and battery cables.
If alone, or other riders have bikes without batteries (2-stroke machines), do the following:
* Put the bike in 3rd gear (1st and 2nd gear are typically too low of a gear ratio for jump starting to successfully work. The rear wheel will simply lock up and slide.)
* With the clutch lever pulled in, start pushing the bike as fast as you can (it is easier to do this on part of the trail / road with a slight to moderate decline)
* With the bike rolling as fast as you can get it going, hop on the bike and then let the clutch lever out. With the rear drive wheel connected to the transmission/crankshaft/connecting rod and piston via the chain, the piston will compress the fuel/air mixture, the spark plug will ignite, and then the engine should fire up and be running.
You would know if you shorted it out by sparks jumping. Did you maybe momentarily or otherwise get the cables mixed up when you jump started it??? What does 5-1- mean???? What codes are set???? What exactly does dead mean??? Is there NO electrical acivity at all???????? Is the main fuse blown now????
If you jump started from a car you have fried the battery. Also possible cooked the rectifier/regulator unit. I suggest get a new battery and charge it at no more than 1 amp for a few hours. Fit the battery and see if the bike starts. If it does check the charge rate to the battery with a muti-imeter. You should be looking at just over 14 volts with about 5K RPM. Good luck and please remember never jump start from a car, van, lorry etc in fact don't jump start at all from anything.
using a car battery, especially while the car is running is way too many cranking amps for a 12 volt bike starter. remove the bike starter to have it rebuilt or replaced. Internally the main power wire inside the starter will be burned/broken. check fuses as well
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