well?? i remember someone posting pics on how to jet. BIG HELP. what about the float thing? thanks from all of us that will us this. i know it's alot to ask.

 

The quick & easy way to check float levels is to use a clear tube that fits the dump hole on the bottom of the carbs. You'll need at least one foot of tubing. Don't worry about an exact fit, the tubing can be a little bigger which will cause some of the gas to leak out but gravity is forgiving and is constant! You can get the tubing from your Yamaha dealer for a few bucks. Remove the stock dump hole tubing, put the new tubing on there & then bend up the other end so its touching the carb housing where the float bottom half meets the top half. Then turn on the gas pitcock & the level of gas in the tube should fill up & be level with or slightly above the bottom/top half of the carb's mating surface. If not, you'll need to adjust the float levels. A sign that the float levels are too high is if the stock drain tubes leak gas while your riding, you'll smell it for sure.

If you need to adjust the float level, take the carbs apart & instead of following the manual's directions of flipping the carb upside down, just turn them upside down but not completley, more like at a 30 degree angle so you can look inside them from the side of the atv. The floats will come to a resting point between two extremes, that is where the float tang should be just touching the needle valve but not compressing it & the float should be 1/2" above the mating surface. The tang should be horizontal with the mating surface as well but if for some strange reason the float level is off, you can adjust them by slightly bending the float tang. This procedure is described in the manual except don't check the level with the carb completley upside down!

Also, while you are there, replace the needle valve/spring, its cheap, & if its bad the float level can be accurate but the gas won't shut off & will leak out of the drain hole as thought the levels are off while your riding.

 

Good tips chimmer, I am about to go check mine and they will make it easier [img]i/expressions/face-icon-small-smile.gif[/img] Here recently, when I am doing wheelies or going up steep hill my Raptor kinda stumbles and runs weird, but it is fine when riding on flat ground. I have heard that the floats cause this.... Whould you agree, or do you have any other suggestions??? Thanks in advance.

 

Yup, I agree. If your float levels are ok then your probably jetted too rich. I had the same problem, it would bog something awful on hills or when I jumped, I raised the clip 2 positions & the trouble cleared. The cv carbs can still cause a little bog when landing off big jumps but you'll be able to tell the difference if your jetted too rich.

 

thanks alot. i'll give it a try.