Question about Yamaha XJ 400 Motorcycles
I would suspect that the float is stuck in the down position allowing fuel to constantly flow into the bowl and then out through the overflow hose. Remove the float bowl and then remove the float and see if there is a hole in the float. Also check the needle valve and seat. The float will rise as the bowl gets full and when the float rises to the top it shuts the flow of fuel off. If there is a pin hole in the float it will fill with gas and cannot then rise as it should. The flow valve also can be stuck open allowing fuel to constantly flow. You need to inspect all these components to see why the fuel is not being shut off when the bowl gets full. It can be varnish is clogging to passages especially if you have not been using a fuel stabilizer when storing your ATV. You will need a can of spray carb cleaner to clean it out. Remove the jets and clean them out and and see if this helps. In other words clean everything of varnish and gunk. Once you remove the float bowl you will have a good idea if you have a dirty carb that needs cleaning. If you do not feel comfortable tackling this then take the carburetor off and let a professional give it a good cleaning and possibly a rebuild. It is critical that the float be set to allow the correct amount of fuel to stay in the reservoir.
Posted on Apr 23, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Dec 12, 2016 | Yamaha 2004 Wolverine 4x4
Jul 14, 2016 | Yamaha Motorcycles
Apr 17, 2016 | Yamaha Motorcycles
Nov 02, 2015 | Yamaha Motorcycles
Dec 23, 2013 | Yamaha 2007 Grizzly 350 Auto 4x4
Sep 13, 2012 | 2001 Yamaha YZ 426 F
Jun 21, 2011 | 1986 Yamaha RD 350
Dec 19, 2009 | 2003 Yamaha WR 450 F
88 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: