Loveisfree

I did this: connect the multimeter on DC - to the battery terminals. I revved the engine as high as she'd go, the service manual said the battery it should stay at 14V - if it goes higher the regulator should be looked at. if it is lower look at the alternator.... It stayed at 12.5-13 - and at higher revs seemed to drop to 9..... So I checked the alternator by unplugging the 3 yellow wires. checked the AC current out of those (alternator side).... the manual said at 4000 RPMs it should increase to 38V. but this didn't even go above 13-14..... so I then figured it must be the alternator... but do the symptoms match the problem? high RPM losing power... sputtering..... fuel smell - all the signs of running super rich, I tried moving the mixture screw as far out as I could without it falling off and it still didn't fix the problem and after a certain point the mixture doesn't work at idle and it cuts out after after 1-2 seconds.....which to me seems like the carburation is OK... something else must be the issue..... Should I change the spark plug? I mean it's the cheaper option at the moment.. I changed out the fuse, cleaned out the terminals, opened and cleaned every plug I could find.... this is a Kawasaki quad - let's be real these things are pretty solidly built... every terminal was almost as if brand new and even the fuse I changed looked remarkably clean..... also - FYI - I am in Bogota, we're at 8300 feet altitude and this thing operates at around 8500-9000 foot altitude. things run rich here - it's just a fact of life.... I clean out the spark plug every once in a while - but I've had the quad for 2 years and it always ran fine - 2 weeks ago it's showing these signs of trouble and I can't find a mechanic worth a penny in the town the machine is at..... it starts, it idles... it just won't accelerate.....

Hello everybody. my name's love - from Bogota Colombia. I have a Kawasaki Bayou 250 from 2007 that started acting weird. What it does is that it starts up, it idles fine. Then when I accelerate it won't go past 4000-5000 rpms at all. I used to be able to get up to 3-4th gear fairly quickly, now it loses power and won't even kick into second. It sputters horribly. I figured it was a problem with the high RPM circuit in the carb. took it out, cleaned it..... put it back in...started back up no prob - same thing - won't rev up. Then I decided to do the battery test per the service manual I found online chapter 16-21 I believe. It says that you connect the battery and test it as the atv is off- it should be slightly higher than 13v - checked out. it said to turn on the ATV and rev it up to 4000 RPMs. the ATV sputters like crazy so this was extremely difficult but I got it - it said if the volts go way above 14v then the regulator is defetive and if it drops below then either the regulator or the alternator is defective. I tested out the alternator, unplugged it (the one with the 3 yellow wires), turned on the ATV and revved it up. The manual said that it should go up to 38v at 4000rpms. this did not go above 15.... so the manual says automatically the alternator has an issue. I tested the resistance on the stator wires and it all checked out including testing out the grounds.... resistance showed zero so according to the manual the stator is good. should be the magnetic rotor - but I checked it with some bolts and they get stuck just as good as they did a while back - so it doesn't seem like the magnetism is lost on that part either.... put the whole thing back together and left it there with no idea where to turn... has anybody had this happen? Where you can turn on the ATV, accelerate slightly - but sputters at high end... then the alternator seems to not be sending enough current to the regulator.... what could it be? Should I just buy another magnetic rotor and see how it goes? I'm stuck on this one.....