This isn't for a 6x6 (actually a little 1970's John Deere Lawn Tractor that I bought recently), but definitly engine related, so...

The fuel pump is shot on the engine, and I've heard that since the gas tank is higher than the carb the pump can just be bypassed. I always thought the pump, since linked to the crankshaft, was pumped every rotation to deliver the fuel to the carb (and so the faster the engine goes.. the more fuel). How would the fuel be regulated in a gravity fed setup? The venturi action of the carb?

Cheers,

Beeman