I have a bf750...can someone explain how i take out this white tube....i just keep topping mine up for like 10 minutes until it is "really" full, not full according to the gas pump.

picture of the white tube out would be nice too.

 

take the cap off, you will see a white colored insert in the tank neck, just pull it out, it is about 8-9 inches long.....can't really see why it needs to be in there anyway....i guess to keep from overfilling..........

 

I remove it at almost every fill up. I think it's in there to keep the gas from sloshing out of the cap.

 

Thanks, I guess I'll fill'er'up to the brim, then put it back in to keep it from sloshing......

 

My DS650 would get 25-27 mpg riding easy and would still get over 20 mpg when riding aggressively. Using your reasoning, the BF750 would have to make about 3 times the HP of the DS650 since it gets about 1/3 the mileage.

 

You can't compare your DS650 to the Brute. The BF has a belt transmission, shaft drive, 4 wheel drive, and weighs more than your DS650. I have a KLR650 that goes 45 miles on 1 gallon. It means little if you don't comapare apples to apples.

They are comparing the horsepower and relative poor gas milage to other quads in its class.

 

My gas milage is not nearly as good as my 650 Cat but that's not why I bought it in the first place.
I was told by the dealer that the white gas tank insert was to keep the neck from being crushed if too much force was applied when tightening the cap.



2006 BF 750 Camo
25" ITP ATR Holeshots
Maxxis Maxlite 8 Spoke Wheels
60" Moose Plow

 

OK, thanks for the tip on the White Tube.
I pulled mine out before our Sundays ride, note the gas indicator Bar was reading full, I was able to get another .85 gallons in for top-off. While out riding, I thought my gas indicator was broken, as it took 29 miles before I dropped down off of the top gas indicator bar, before all I had to do was go 17 miles and I already had a lower reading on the gas indicator.
I noticed the Bomb O800 that was in our Group also has this White tube.

 

The white tube is to give the tank room for fuel expansion. If you fill the tank to the top and the fuel heats up it will expand and swell tank if it does not have any airspace in it.

I would only top off without the tube just before heading out on a ride!!!! Much safer!!

 

With respect, I have to disagree.....the tank can't swell, because if you look under the right rear fender, it has a tank vent at the top of the tank running into a hole in the frame, if you take it out you will see a valve/filter looking devise at the end to keep the very thing you are talking about from happening, if there was no vent at all, then the tank could swell from excessive heat.....IMO, the white tube is there for the sole purpose of keeping the fuel below the filler neck, and from possible sloshing out the cap....for EPA reasons i am sure.......