Which lines should i move on my 00" Foreman 450 ES, if I plan on going into deeper water?

 

All of them, unless you dont mind wet brakes, water in the diffs and the engine. All the vents attach to the chassis just in front of the gas tank at the bottom of the handlebars. There is one for the rear differential, one for the rear brake, one for the fan, one for both front brakes (they use a "T" connector) and one for the front diff. I bought joiners and extended them into the headlight pod, go higher if you want to go deeper.

Also very important on the 450 is to extend the vent hose that comes out of the top of the carb. I used rubber hose to extend this all the way to the headlight pod aswell.

Lastly, and very important is to change the main engine crank case vent. Right now it comes out of the engine (above the oil fill hole) and goes directly into the bottom of the airbox. If you get any more then about an inch of water in the airbox, it flows straight to your engine!!! (believe me it happens even with a snorkle) I removed it and installed a new, longer lenth of 1/2 breather hose running it up over the carburator then back down to the fitting on the airbox. (the 90 degree fitting turns easilly so you can position it correctly.)