When too much gas enters the carburetor, there wont be enough space left to mix the required air/fuel ratio for the bike to start and run. Any ideas would be appreciated as I'm not that knowledgeable about mechanics. grizzlyriders.com is an independent Yamaha enthusiast website owned and operated by VerticalScope Inc. It's either not getting fuel or spark. ATVs with traditional carburetors usually have a vacuum-operated fuel pump. I recommend you save this job for a dealer. Make sure you are only touching the rubber and not any metal parts. Fixing such issues is usually a job for a mechanic. You may need to replace your spark plug to get going again. After checking timing,valves,carb, etc and still no luck I brought it in. This will, however, require a specialist tool that the average home mechanic does not have. I like to try to fix thing myself iv learned a lot about this atv since Ive had it but this has me stumped.. any advice tips? If you forget to engage the kill switch before starting the bike, it will pull gas into the carburetor, but there is no spark to ignite the fuel. Im guessing you have a jet thats plugged. The battery should read 12,6 12,8V. Now ive never actually pulled apart the carb in my quad yet, but Ive ripped many apart and cleaned them, and they arent really that difficult. Gas may go bad if it sits too long, or it may get contaminated with water due to condensation. It's not a real common thing to happen, but it does happen. Any help appreciated. Start from the top and work your way down if unsure where to begin. I just saw the post farther down about the 450. they are in constant mesh with a gear inside the engine. yamaha kodiak 400 turns over but wont start. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Cracks in the fuel line may cause the pump to suck false air into the tube instead of gas. Make sure neither is clogged and allows air to flow freely. You will need to pump it several times for it to have any effect. I checked the plug it was wet with gas cleaned it off tried again same thing only a backfire. I've done this when replacing stators. If the vent is blocked, the fuel pump may be unable to suck fuel out of the tank. pull the pump and bench test. Nate16..to save the oil you can place 5 gallon buckets or whatever you have under each wheel on the left side before you crack it open. Be a part of best online community of ATV riders and join thousands of people who Disconnect and apply dielectric grease to every electric connector as a preventive measure for future trouble-free washing! was wondering if it worth the tumble to put in a used one. 2. Remove both the main jet and the pilot jet. Make sure the timing marks are lined up correctly. Do you mean towing it in gear to start it? if you can't get it to take then the carb needs to be removed/rebuilt. These bangs are known as ATV backfiring, usually caused by the air/fuel ratio being too rich or too lean. Clear editor. it don't look the rusted over all. Content on grizzlycentral.com is generated by its users. You will also need to address the cause of your dirty carburetor, or it will clog up the next time you ride. Set the meter to 200.000. I hope it will help boost your ATV experience! I'm confused about the rope pulling Sent from my iPhone using Tapatalk 2 So when you hold the starter button down, the gears just spin without the engine turning over. If it is very little or no fuel coming from the fuel line, you likely have either: If there is a steady or pulsating stream of fuel, you know that. Removing and rebuilding the carburetor from a 95 Yamaha Kodiak 400 that sat over winter with ethanol fuel.
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