I have a 2005 kawasaki 700 prairie. Once the quad is turned on and ran for about a minute, the fan kicks on and stays on until the battery is completely dead even after turning the bike off. It continues and constantly runs and runs until batters is drained. Any suggestions about why this is and how to fix it? Thanks
Steve

 

Check the temp sensor in the radiator. It's a round, screw-in "plug" with wires coming out of it. Sounds like it's sticking. Then, I'd check to see if there's a relay in the line, possibly near/around the fuse block. Next, check to make sure (if it's a "used" quad) that someone hasn't hacked the wiring and hooked up the wrong ones to the temp switch and/or fan.
My 2cents.
Jeff Foland
'95 ZX9R
'71 H1-B

 

if that doesn't work i would try to get a new switch and see if that fixes it.

 

I have to agree on the sticking/bad sensor if it takes a minute before the fan comes on initially.

 

+1