need a carb and fuel pump

these are for a model 917.25.180 sears tractor
Onan engine model BF-MS/3271E
ANY IDEAS WHERE i CAN FIND THESE PARTS
PETE

HI PETE
WELCOME TO THE SEARS SITE. SEEMS YOU ARE NEW TO SEARS TRACTORS. IT WILL BE GOOD IF YOU WILL FIND & READ ALL THE SEARS INFORMATION ON SERVICE & MAINTANINCE OF THE TRACTOR, BE SURE TO LUBE & CHANGE ENGINE & TRANSMISSION FLUIDS USING 30WT. OIL. IF YOU HAVE A MOWING DECK THAT THE SPINDLE BEARINGS ARE STILL GOOD BE SURE TO PUMP THE SPINDLES FULL OF WHEEL BEARING GREASE, I GREASE MINE EACH TIME I MOW, THEY WILL LAST YEARS.
BACK TO CARB & FUEL PUMP. ONAN.COM HAS PARTS ALSO THE LARGEST SOURCE FOR PARTS IS EBAY (ONAN), IF YOU GET A USED CARB. IT WON'T BE ANY BETTER THAN THE ONE YOU HAVE. THESE CARBS. ARE EASLY REBUILDABLE, GET A REBUILD KIT, METAL FLOAT, FILTER, ALL NEW FUEL HOSES & CLEAN FUEL TANK, THERE IS SOME VERY SMALL HOLES THAT WILL NEED TO BE CLEANED, USE ONLY PREMIUM GAS W/ 1 OUNCE OF MARVEL MYSTERY OIL PER GAL. OF GAS. THESE CARBS. & MOTORS DON'T LIKE ETANOL, A GOOD CLEANING W/ CARB. ON ENGINE & NEW BOWL GASKET MAY WORK. SOMETIMES THE RUBBER VALVES IN THE FUEL PUMP DRIES OUT & THE MM OIL WILL SOFTEN THEM A BIT TO HELP PUMP FUEL. YOU MODEL IS PROBABLY THE BEST YEAR FOR SEARS TRACTORS, NEXT YEAR THEY STARTED MAKING SHORT CUTS. I HAVE SOME OF EACH.
PLENTY MORE WHERE THIS CAME FROM.
GOOD LUCK JIMMY