I acquired a Roper two stage snow blower that doesn't currently start. It sat for an unknown number of years. I haven't been able to find any manual, or parts list in my searches. If you have one, or know where I can find one, please let me know. I drained the fuel and oil, replaced the fuel lines, checked for spark, and cleaned the carb. I have never rebuilt a carburetor before, and I'm not sure I have things adjusted correctly to start. It has fresh gas and oil. Any tips would be appreciated. Thank you.