Just thought I would Post an easy way to increase the Capacity of your gas tank by about a 1/2 gallon for free.  I did this on my Zilla about 15 years ago with great results. It can make the difference between a fun day and a long long walk.

How TO:

Make sure the tank is mounted in place, drained of gas, and have a cap and petcock that don't leak.

Insert into the end of your fuel cap vent hose an air valve.  I just cut one from an old tube. Close your petcock and disconnect fuel line from carb.

Fill the tank almost full with boiling hot water.  Screw the cap on and use a bike pump to pump up pressure in the tank.  I think I did something like 5 lbs or so pressure.  Now Go to bed and let it cool.  The next day drain it and repeat the process a few times.  I suppose if you get too carried away you could seriously distort the tank and have problems with the plastics fitting.

I don't recommend trying it with the tank off the quad or I doubt that mounting holes would ever line up. 

To look at it mounted with plastic you cant tell any difference at all.  Looking at the tank off the quad it looks slightly bloated. A slightly snug fit where it drops down over the frame tube.

We take some long rides out in the utah desert and its piece of mind having a little more fuel.

Will the hood still fit over the tank?

post pics of the final results