You can use a checking account or debit card through paypal.Sears used to sell eska motors so they may have parts,also check NAPA.They will have to use their books to find the parts and then call their suppliers to order them.
i have a new fuel pump diaphram for a ted williams 7.5. it should be the same thing. if you want it ill send it to ya since i just sold the motor. pm me if so
you can get parts at sears.com or boatsportandtackle.com. where i got all my parts from. the only downfall is they are all new/old parts ( sat on a shelf for 30 years )