I was hoping the pump would be an easy fix. like the old Caterpiller Engine, take off 3 bolts at the back of the pump take of the plate, take out the rubber blocker, use a hex wrench turn 1/4 and you climbed those hills like you new what you were doing. too much fuel and bang goes a piston. thats why I am a little scared to put any extra fuel to this Engine, on account of it being just 195 cu.in. I noticed the 50hp LS has a Mitsubishi Engine which is a little bigger, 203 cu.in. I think. take care. (wifes calling going to the Doc's)