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400EX Starting Problem
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Posted by: NSTIG8R

Had trouble a few weeks ago on the starting line. Quad wouldn't start, had to push start it. Fuse was good, battery ground wire good. When I was done, I wash it & it started. Happened again a few times while riding. Cleaned the starter switch assembly and it started fine at the next race. When I was done it wouldn't start. Ran cables from the battery directly to the starter and it turned over, even with the key off and the switch off. Where do I go from here?:confused; Anyone had this problem?

Posted by: MOFO

sounds like you are saying that when you hit the starter button, nothing happens...it doesnt even try to crank? I'd start by checking ALL of your electrical connections. I had this problem before...randomly would not start...no crank. I found my postive battery wire was very loose on the battery. Cleaned all the connections up and tightened them down...havent had a problem since.

Posted by: Pappy

it could also be the starter switch itself. if water ..mud and grit get in there it will break the connection and act like a dead battery

Posted by: Rip_Tear

If it is cranking and not starting it could be as easy as a flow (gas/air) or weak battery?

I would check all the connections like previously suggested first

Good luck!

Posted by: -=Skot=-

solenoid

Posted by: NSTIG8R

already switched a solenoid with another EX, mine worked on theirs and theirs didn't work on mine.

Posted by: -=Skot=-

did you figure out the problem?

Posted by: NSTIG8R

Not yet
Going to try all of my elec part son another 400Ex to see what the problem is.

Posted by: Jumbo747

mine did the same thing a lot & it was the positive (red) wire was really loose on the battery

Posted by: sparks400

go over every connection possiable,inside the start button,charge the battery, and clean every connection with electrical wire cleaner, u can pick it up at any local car store, and if that dont work, look for any burnt or cut wires, and wrap them up with electrical tape or get a new wire