CNew

Hello All,
    I’m brand new to the forum and also new to the older Ohlsson & Rice engines. I’ve been working on various small engines including Briggs model size from the 1930s-50s so I’m in new territory here. I understand through some researching that there are some experts here in the forum and I’m hoping to get some advice. I recently acquired my first Ohlsson & Rice engine, actually still waiting for delivery. It’s a basic Type 115 engine and doesn’t have a gas tank or anything else. It’s also got a carburetor that looks a bit different from most that I’ve seen during my initial research. The top of the carb is completely flat with no spring loaded button on top or other holes on top. I’m anticipating it will need to be completely disassembled and cleaned and the diaphragm replaced. First question is does anyone here still make a replacement diaphragm or know of a suitable mateial I could purchase to make my own? Second question is, what is the recommended spark plug for these engines? Mine is coming without one and of course no other documentation to reference. I look forward to your expert opinions and to learning from all of you that are much more knowledgeable on these cool old engines.  I’ll try to post a couple photos after it arrives.