calypsoaz

I snapped a picture of the spark plug, its not even 2 weeks old about 2-3 hours max on it. Here it is... And another better quality picture For only a few hours on it, it sure does look like it has darkened quite a bit.

Sorry its a long story. : )

I got the quad early august of this year. I haven't done any thing to it, besides replace the running switch (I've heard it called a dead man switch) on the handlebar, not the PB Switch but the one above it. I've have taken the carb off and taken it apart somewhat but didn't notice anything wrong with it. I handed it over to my wifes dad who works on primarily transmissions for vehicles. He also works on Artic Cats (don't buy them he says!!!) as well as all the other ATC/ATV/UTV brands. He said the jet wasn't clogged, but I get the feeling he didn't really look at it. Other than that, put a new battery on it, took it out to Butcher Jones, took it up a hill, rolled it, it was still running till a couple hours before we packed up and were getting ready to leave. That's when the problems happened. Actually we were having problems with it the night before on the way in to Butcher Jones. Every 15 minutes or so, it would over heat and completely die. Couldn't start it up until it was semi-cool. Eventually got it into the first cove of Saguaro Lake. Had it parked most of the night, but decided to attempt a hill, that's when I rolled it. I caught from rolling a second time, and started it came back down the hill and parked it, because I was all banged up. Later the next day, we rode the he!! out of it. Then randomly someone got on it to take it for a spin, and that's when it would start and idle but as soon as you put any throttle on it, it sounded like it was misfiring HARD CORE!!! Let off the throttle, it idles fine and starts all day. Took it to my wife's dad he noticed that the running switch was broke, snipped the wire, uncrossed them, started up and ran just fine. Not a single problem after that. It doesnt have the over heat issue as bad now, now it takes about 30-40 minutes of riding before it wants to die. I'm so flustered, I don't know where to begin. To answer your question, no, I haven't cleaned the air filter. I will do that tomorrow, and see if it changes the performance. I'll use gas to clean it and wait for it to air out before I attempt to start it. I will let you know more tomorrow. Nathan L. Mesa, AZ

It is the same part number as my 2003 Yamaha Warrior 350. I just noticed that. Check out my problems see if you know of anything to fix it. http://www.quadcrazy.com/atvforum/yamaha-atv-forum/7210-2003-yamaha-warrior-350-overheat-gas-air-mix-problems.html

2003 Yamaha Warrior 350 Overheat and Gas/Air Mix Problems. My Warrior seems to be overheating on me. I live in Metropolitan Arizona, and I expect to have some issues with heat ,but not this bad. After about 30-40 minutes of riding it wants to die on me, the only thing to do to keep it from dieing is keep it revved up at idle and between gears. Tell me what you think about that issue. The next issue is that my Gas/Air mixture might be off. I don't know which screw is the mixture screw, I know which one is the idle screw. And I do know thats it all the way in 2.5 turns out on the mixture. It needs a new throttle cable and will come eventually. I'm just trying to fix these two issues for now. And last issue, but I think its more so related to the gas/air mixture. I takes FOREVER to start my quad. At least 10 minutes. I know its not getting enough air (or too much gas) because I had to take three of the screws out of the air filter cabin to get more air into the carburetor. When the air filter cabin lid is screwed down with all 5 screws it takes forever to start Full choke, about 10-15 minutes, and 50-75 cranks (tallying an almost dead battery), but when its propped open with a tire plug tool, it doesn't take AS long. Full choke, about 3 minutes and 25-35 cranks later! From my understanding a finely tuned ATV should only take a minimum of 2-10 cranks to start on full choke. Could there be some other issues with my carburetor besides the gas/air mixture being off? Like like the float or the jets? Please, any help will be greatly appreciated. Nathan L. Mesa, AZ

I had that same problem, its the switch not the PB switch but the one right above it! I had to replace my switch after I rolled my 2003 Warrior 350. 42$ later it fixed the problem. I was thinking it was a clogged jet, but had my wife's dad look at it (an atv and car mechanic) if you take the top switch on the left side of the handle bar, cut it and uncross the wires it will run fine. If you have it running fine, for kicks and giggles, apply your parking brake and then try and hit the throttle, it does the same thing! It prevents you from riding the quad under those circumstances. Like I said before mine did the same thing, the motor sounds like it cuts out constantly, but never dies, idles fine and will start all day but just doesn't run like it should. I pulled the part number from Yamaha parts for your wolverine, its under the Handle Switch Lever category. In my opinion I don't think that there is any coincidence between all that stuff going out at once. Starter and Battery coincidence MAYBE, but Parking Brake and others, I don't think so. Item # Location In the Diagram: 28 Item Part #: 4KB-82917-00-00 Item Description: SWITCH

I had that same problem, its a dead man switch! I had to replace my switch after i rolled my 2003 Warrior 350. 42$ later it fixed the problem. I was thinking it was a clogged jet, but had my wifes dad look at he (an atv and car mechanic) if you take the top switch on the left side of the handle bar, cut it and uncross the wires it will run fine. If you have it running fine, for craps and giggles, apply your parking brake and then try and hit the throttle, it does the same thing! It prevents you from riding the quad under those circumstances. Like I said before mine did the same thing, the motor sounds like it cuts out constantly, but never dies, idles fine all day but just doesn't run like it should.