Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

have a coleman powermate 1600 generator that last year when we used it we ran the gas tank dry and it shut off.this year during deer camp we started it up and it surges real bad at full speed.it runs better with 2 notches of choke on so i'm assuming the high speed jet is obstructed.this jet is fixed and located vertical in the center of the float bowl and holds the float bowl on.anyone know how many passages in it and what to look for?. also  this generator has but one speed and goes to the governed speed when started.there is a mixture screw i assume is for idle mixture that is adjustable.what is the initial mixture screw setting and how do you dial this mixture setting in if the engine only runs at governed speed?also where can i get a new gas cap or fix the one i have.it is a vented cap that had a foam cover on the bottom that fell off and now the vibration causes the gas to spill out the vent. the only thing i know about the engine is that it is a model 93400 and 3 1/2 hp. thanks in advance for any info. mike janesville wi.